- maoensis, Marginella maoensis C.J. Maury, 1917 † - (MARGINELLIDAE) (FOSSIL)
- maoensis, Zamorapecten maoensis Waller, 2011 † - (PECTINIDAE) (FOSSIL)
- maoensis, Strombus maoensis C.J. Maury, 1917 † - syn of: Lobatus dominator H.A. Pilsbry, 1917 † - (STROMBIDAE) (FOSSIL)
- maoertangense, Chaotianoceras maoertangense J.K. Zhao & al., 1978 † - (PSEUDOTIROLITIDAE) (FOSSIL)
- maoica, Mangelia maoica C.J. Maury, 1917 † - (MANGELIIDAE) (FOSSIL)
- maoica, Sheldonella maoica (C.J. Maury, 1917) † - (NOETIIDAE) (FOSSIL)
- maonisriparum, Drillia maonisriparum C.J. Maury, 1917 † - syn of: Crassispira maonisriparum (C.J. Maury, 1917 †) - (DRILLIIDAE) (FOSSIL)
- maonisriparum, Crassispira maonisriparum (C.J. Maury, 1917 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- MAORAXIDAE Bandel, Grόndel & Maxwell, 2000 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-CERITHIOIDEA [Superfamily]) (FOSSIL)
- Maoraxis, Genus Maoraxis Bandel, Grόndel & Maxwell, 2000 (MAORAXIDAE) (FOSSIL)
- maori, Caecum maori M. Pizzini & B.K. Raines, 2006 - (CAECIDAE)
- maoria, Aclis maoria A.W.B. Powell, 1937 - (ACLIDIDAE)
- maoria, Amphithalamus maoria W.F. Ponder, 1968 - syn of: Amphithalamus incidatus maoria (W.F. Ponder, 1968) - (ANABATHRIDAE)
- maoria, Amphithalamus incidatus maoria (W.F. Ponder, 1968) - (ANABATHRIDAE)
- maoria, Drilliola maoria (Powell, 1942 †) - (BORSONIIDAE) (FOSSIL)
- maoria, Scalptia maoria (P. Marshall & R. Murdoch, 1921 †) - (CANCELLARIIDAE) (FOSSIL)
- maoria, Seila maoria B.A. Marshall, 1978 - (CERITHIOPSIDAE)
- maoria, Socienna maoria H.J. Finlay, 1930 - syn of: Metaxia maoria (H.J. Finlay, 1930) - (CERITHIOPSIDAE)
- maoria, Dimya maoria A.W.B. Powell, 1937 - (DIMYIDAE)
- maoria, Willungia maoria Powell, 1938 † - (EOCYPRAEIDAE) (FOSSIL)
- maoria, Melanella maoria (A.W.B. Powell, 1940) - (EULIMIDAE)
- maoria, Balcis maoria A.W.B. Powell, 1940 - syn of: Melanella maoria (A.W.B. Powell, 1940) - (EULIMIDAE)
- maoria, Zeidora maoria A.W.B. Powell, 1937 - (FISSURELLIDAE)
- maoria, Fustiaria maoria P.A. Maxwell, 1992 † - (FUSTIARIIDAE) (FOSSIL)
- maoria, Divariscintilla maoria A.W.B. Powell, 1932 - (GALEOMMATIDAE)
- maoria, Lasaea maoria (A.W.B. Powell, 1933) - (LASAEIDAE)
- maoria, Limatula maoria Finlay, 1926 - (LIMIDAE)
- maoria, Myrtea maoria Powell, 1935 † - (LUCINIDAE) (FOSSIL)
- maoria, Antimargarita maoria R.K. Dell, 1995 - (MARGARITIDAE)
- maoria, Ovaginella maoria (A.W.B. Powell, 1937) - (MARGINELLIDAE)
- maoria, Mathilda maoria (A.W.B. Powell, 1940) - (MATHILDIDAE)
- maoria, Opimilda maoria A.W.B. Powell, 1940 - syn of: Mathilda maoria (A.W.B. Powell, 1940) - (MATHILDIDAE)
- maoria, Mitra maoria H.J. Finlay, 1927 - syn of: Mitra carbonaria W.J. Swainson, 1822 - (MITRIDAE)
- maoria, Pronucula maoria Powell, 1937 - (NUCULIDAE)
- maoria, Parilimya maoria (R.K. Dell, 1963) - (PARILIMYIDAE)
- maoria, Pedicularia maoria A.W.B. Powell, 1937 - syn of: Pedicularia pacifica W.H. Pease, 1865 - (PEDICULARIIDAE)
- maoria, Pholadomya maoria R.K. Dell, 1963 - syn of: Parilimya maoria (R.K. Dell, 1963) - (PHOLADOMYIDAE)
- maoria, Elysia maoria A.W.B. Powell, 1937 - (PLAKOBRANCHIDAE)
- maoria, Antimelatoma maoria R.K. Dell, 1995 - (PSEUDOMELATOMIDAE)
- maoria, Ividella maoria (A.W.B. Powell, 1940) - (PYRAMIDELLIDAE)
- maoria, Rissopsetia maoria R.K. Dell, 1956 - (PYRAMIDELLIDAE)
- maoria, Ividella maoria A.W.B. Powell, 1940 - syn of: Ividella maoria (A.W.B. Powell, 1940) - (PYRAMIDELLIDAE)
- maoria, Sassia maoria (Finlay, 1924 †) - (RANELLIDAE) (FOSSIL)
- maoria, Xanthodaphne maoria R.K. Dell, 1956 - (RAPHITOMIDAE)
- maoria, Iridoteuthis maoria R.K. Dell, 1959 - (SEPIOLIDAE)
- maoria, Tenagodus maoria (A.W.B. Powell, 1940) - (SILIQUARIIDAE)
- maoria, Siliquaria maoria A.W.B. Powell, 1940 - syn of: Tenagodus maoria (A.W.B. Powell, 1940) - (SILIQUARIIDAE)
- maoria, Cirsonella maoria (Powell, 1937) - (SKENEIDAE)
- maoria, Tonna maoria A.W.B. Powell, 1938 - syn of: Tonna cumingii (S.C.T. Hanley) - (TONNIDAE)
- maoria, Tornus maoria (A.W.B. Powell, 1937) - (TORNIDAE)
- maoria, Metaxia maoria (H.J. Finlay, 1930) - (TRIPHORIDAE)
- maoria, Coluzea maoria (P. Marshall & R. Murdoch, 1919 †) - (TURBINELLIDAE) (FOSSIL)
- maoria, Gazameda maoria A.W.B. Powell, 1940 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- maoria, Halicardia maoria R.K. Dell, 1978 - (VERTICORDIIDAE)
- Maoriana, syn of: Genus Ptychodon C.M.F. Ancey, 1888 (CHAROPIDAE)
- maoriana, Euciroa maoriana Eagle, 2000 † - (EUCIROIDAE) (FOSSIL)
- maoriana, Pectunculus maoriana W.R.B. Oliver, 1923 - syn of: Dosinia maoriana (W.R.B. Oliver, 1923) - (GLYCYMERIDIDAE)
- maoriana, Serrata maoriana (A.W.B. Powell, 1932) - (MARGINELLIDAE)
- maoriana, Volvarina maoriana A.W.B. Powell, 1932 - syn of: Serrata maoriana (A.W.B. Powell, 1932) - (MARGINELLIDAE)
- maoriana, Serrata maoriana A.W.B. Powell, 1932 - syn of: Serrata maoriana (A.W.B. Powell, 1932) - (MARGINELLIDAE)
- maoriana, Marginella maoriana A.W.B. Powell, 1932 - syn of: Serrata maoriana (A.W.B. Powell, 1932) - (MARGINELLIDAE)
- maoriana, Aulacomya maoriana T. Iredale, 1915 - (MYTILIDAE)
- maoriana, Nucinella maoriana (C. Hedley, 1904) - (NUCINELLIDAE)
- maoriana, Merelina maoriana A.W.B. Powell, 1939 - (RISSOIDAE)
- maoriana, Vermicularia maoriana A.W.B. Powell, 1937 - (TURRITELLIDAE)
- maoriana, Dosinia maoriana (W.R.B. Oliver, 1923) - (VENERIDAE)
- maoriana, Mauira maoriana (H.H. Suter, 1917 †) - (VOLUTIDAE) (FOSSIL)
- maorianus, Heliacus maorianus A.W.B. Powell - syn of: Heliacus implexus (J.W. Mighels, 1845) - (ARCHITECTONICIDAE)
- maorianus, Cleidothaerus maorianus H.J. Finlay, 1926 - syn of: Cleidothaerus albidus (J.B.P.A. Lamarck, 1819) - (CLEIDOTHAERIDAE)
- maorianus, Ischnochiton maorianus T. Iredale, 1914 - (ISCHNOCHITONIDAE)
- maorianus, Aulacomya maorianus T. Iredale, 1915 - syn of: Aulacomya maoriana T. Iredale, 1915 - (MYTILIDAE)
- maorianus, Mytilus maorianus T. Iredale, 1915 - syn of: Aulacomya maoriana T. Iredale, 1915 - (MYTILIDAE)
- Maoricardium, Genus Maoricardium J. Marwick, 1944 (CARDIIDAE)
- Maorichiton, syn of: Genus Plaxiphora J.E. Gray, 1847 (MOPALIIDAE)
- Maoricolpus, Genus Maoricolpus H.J. Finlay, 1927 (TURRITELLIDAE)
- Maoriconcha, syn of: Genus Otoconcha F.W. Hutton, 1884 (CHAROPIDAE)
- Maoricrassus, Genus Maoricrassus Vella, 1954 (CONOIDEA (UNASSIGNED)) (FOSSIL)
- Maoricrater, Genus Maoricrater W.H. Dall, 1956 (LEPETIDAE)
- Maoricrypta, Genus Maoricrypta H.J. Finlay, 1926 (CALYPTRAEIDAE)
- Maoridaphne, Genus Maoridaphne A. Powell, 1942 (RAPHITOMIDAE)
- maoriensis, Triviella maoriensis M.K. Mestayer, 1927 - syn of: Ellatrivia merces (T. Iredale, 1924) - (TRIVIIDAE)
- Maorimactra, Subgenus Mactra (Maorimactra) H.J. Finlay, 1928 (MACTRIDAE)
- Maorimonotis, Genus Maorimonotis Grant-Mackie, 1978 (PTERIIDA (UNASSIGNED)) (FOSSIL)
- Maorimorpha, Genus Maorimorpha A. Powell, 1939 (MITROMORPHIDAE)
- maorinus, Atys maorinus J. Marwick, 1931 † - (HAMINOEIDAE) (FOSSIL)
- Maoriscaphander, Genus Maoriscaphander R.K. Dell, 1950 (CYLICHNIDAE)
- Maoristylus, syn of: Genus Placostylus H.H. Beck, 1837 (BOTHRIEMBRYONTIDAE)
- Maoritellina, syn of: Genus Tellina C. Linnaeus, 1758 (TELLINIDAE)
- Maorites, Genus Maorites Marshall , 1926 (KOSSMATICERATIDAE) (FOSSIL)
- Maorithyas, Genus Maorithyas C.A. Fleming, 1950 (THYASIRIDAE)
- maoritinctum, Ranularia maoritinctum L.A. Reeve, 1844 - syn of: Ranularia cynocephala caribbaeum W.J. Clench & H. Turner, 1957 - (RANELLIDAE)
- Maoritomella, Genus Maoritomella A. Powell, 1942 (BORSONIIDAE)
- Maoritrigonia, Genus Maoritrigonia Fleming, 1962 (TRIGONIIDAE) (FOSSIL)
- maorium, Propeamussium maorium (R.K. Dell, 1956) - (PROPEAMUSSIIDAE)
- maorius, Zeacolpus maorius A.W.B. Powell, 1940 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- Maorivetia, Genus Maorivetia Finlay, 1924 (CANCELLARIIDAE) (FOSSIL)
- maorum, Cochlespira maorum (P. Marshall & R. Murdoch, 1923 †) - (COCHLESPIRIDAE) (FOSSIL)
- maorum, Drillia maorum E.A. Smith, 1877 - syn of: Antimelatoma buchanani (F.W. Hutton, 1873) - (DRILLIIDAE)
- maorum, Macroctopus maorum (F.W. Hutton, 1880) - (OCTOPODIDAE)
- maorum, Octopus maorum F.W. Hutton, 1880 - syn of: Macroctopus maorum (F.W. Hutton, 1880) - (OCTOPODIDAE)
- maorum, Gomphina maorum E.A. Smith, 1902 - (VENERIDAE)
- maorum, Gomphina maorum E. Fischer-Piette & B. Métivier, 1971 - syn of: Gomphina moerchi (G.F. Angas, 1872) - (VENERIDAE)
- mapae, Ancula mapae (R.F. Burn, 1961) - (GONIODORIDIDAE)
- mapalia, Sigapatella mapalia J. Marwick, 1929 † - (CALYPTRAEIDAE) (FOSSIL)
- Mapesella, Genus Mapesella Bandel, 2002 (STREPTACIDIDAE) (FOSSIL)
- mapesi, Aktastioceras mapesi Shimanskiy, 1993 † - (PARABACTRITIDAE) (FOSSIL)
- mapesi, Prolecanites mapesi W. Korn & Ebbighausen, 2006 † - (PROLECANITIDAE) (FOSSIL)
- mapesi, Zhonglupuceras mapesi (T.J. Frest & al., 1981 †) - (PSEUDOHALORITIDAE) (FOSSIL)
- mapesi, Plocezyga mapesi A. Nützel, 1998 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- mapesi, Synwocklumeria mapesi Becker, 2000 † - (WOCKLUMERIIDAE) (FOSSIL)
- Mapesites, Genus Mapesites Work & Boardman, 2003 (THALASSOCERATIDAE) (FOSSIL)
- mapingense, Pleuronodoceras mapingense (W.K.C. Sun, 1933 †) - (PLEURONODOCERATIDAE) (FOSSIL)
- mapingensis, Euomphalus mapingensis A.W. Grabau, 1936 † - (EUOMPHALIDAE) (FOSSIL)
- mapipi, Gibberula mapipi Ortea, 2017 - (CYSTISCIDAE)
- Mapirites, syn of: Genus Metaperrinites Ruzhencev , 1950 (PERRINITIDAE) (FOSSIL)
- mapoonensis, Costatophora mapoonensis (C.F. Laseron, 1958) - (TRIPHORIDAE)
- mapoonensis, Costatophora mapoonensis C.F. Laseron, 1958 - syn of: Costatophora mapoonensis (C.F. Laseron, 1958) - (TRIPHORIDAE)
- mappa, Protoconus mappa J. Lightfoot, 1786 - syn of: Tenorioconus mappa (J. Lightfoot, 1786) - (CARINOPELTIDAE)
- mappa, Tenorioconus mappa (J. Lightfoot, 1786) - (CONIDAE)
- mappa, Conus mappa J.C.H. Crosse, 1858 - syn of: Gastridium eldredi (J.P.E. Morrison, 1955) - (CONIDAE)
- mappa, Leporicypraea mappa (C. Linnaeus, 1758) - (CYPRAEIDAE)
- mappa, Leporicypraea mappa Thach, 2017 - (CYPRAEIDAE)
- mappa admirabilis, Leporicypraea mappa admirabilis F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- mappa alga, Leporicypraea mappa alga (G. Perry, 1811) - (CYPRAEIDAE)
- mappa aliwalensis, Leporicypraea mappa aliwalensis F.Jr. Lorenz, 2002 - syn of: Leporicypraea rosea aliwalensis F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- mappa geographica, Leporicypraea mappa geographica F.A. Schilder & M. Schilder, 1933 - syn of: Leporicypraea geographica (F.A. Schilder & M. Schilder, 1933) - (CYPRAEIDAE)
- mappa granarius, Conus mappa granarius L.C. Kiener, 1847 - syn of: Tenorioconus granarius (L.C. Kiener, 1845) - (CONIDAE)
- mappa jesusramirezi, Tenorioconus mappa jesusramirezi (T. Cossignani, 2010) - (CONIDAE)
- mappa panerythra, Leporicypraea mappa panerythra (J.C. Melvill, 1888) - (CYPRAEIDAE)
- mappa rosea, Leporicypraea mappa rosea Gray, 1824 - syn of: Leporicypraea rosea (J.E. Gray, 1824) - (CYPRAEIDAE)
- mappa subsignata, Leporicypraea mappa subsignata (J.C. Melvill, 1888) - (CYPRAEIDAE)
- mappa trinitarius, Tenorioconus mappa trinitarius (C.H. Hwass, 1792) - (CONIDAE)
- mappa ultraviola, Leporicypraea mappa ultraviola F.Jr. Lorenz & C.B. Bridges, 2014 - syn of: Leporicypraea rosea ultraviola F.Jr. Lorenz & C.B. Bridges, 2014 - (CYPRAEIDAE)
- mappa viridis, Leporicypraea mappa viridis (A. Kenyon, 1902) - (CYPRAEIDAE)
- mappa viridis eluceta, Leporicypraea mappa viridis eluceta F.Jr. Lorenz & A. Hubert, 2000 - (CYPRAEIDAE)
- mappa viridis montrouzieri, Leporicypraea mappa viridis montrouzieri (P. Dautzenberg, 1903) - (CYPRAEIDAE)
- mapuche, Entolium mapuche Damborenea, 2002 † - (ENTOLIIDAE) (FOSSIL)
- mapucherum, Calliostoma mapucherum C. Nielsen & al., 2004 † - (CALLIOSTOMATIDAE) (FOSSIL)
- mapulehuae, Philonesia mapulehuae H.B. Baker, 1940 - (EUCONULIDAE)
- Maputrigonia, Genus Maputrigonia Leanza, 1985 (TRIGONIIDAE) (FOSSIL)
- mara, Erosaria eburnea mara T. Iredale, 1939 - (CYPRAEIDAE)
- mara, Odostomia mara P. Bartsch, 1926 - (PYRAMIDELLIDAE)
- maracaibensis, Anadara zuliana maracaibensis F. Hodson & al., 1927 - (ARCIDAE)
- maracaibensis, Persicula maracaibensis F. Hodson, 1927 † - (CYSTISCIDAE) (FOSSIL)
- maracaibensis, Mactra maracaibensis F. Hodson, 1931 † - (MACTRIDAE) (FOSSIL)
- maracaibensis, Mytella maracaibensis I. Beauperthuy, 1967 - (MYTILIDAE)
- maracaibensis, Pallacera maracaibensis (N.E. Weisbord, 1929 †) - (NASSARIIDAE) (FOSSIL)
- maracaibensis, Orthalicus maracaibensis L. Pfeiffer, 1856 - (ORTHALICIDAE)
- maracaibensis, Chlamys maracaibensis F. Hodson & F. Hodson, 1927 † - syn of: Lindapecten plurinominis (H.A. Pilsbry & Johnson, 1917 †) - (PECTINIDAE) (FOSSIL)
- maracaibensis, Potamides maracaibensis N.E. Weisbord, 1929 † - (POTAMIDIDAE) (FOSSIL)
- maracaibensis jamaicensis, Orthalicus maracaibensis jamaicensis H.A. Pilsbry, 1899 - syn of: Orthalicus maracaibensis L. Pfeiffer, 1856 - (ORTHALICIDAE)
- maracaibensis tricinctus, Orthalicus maracaibensis tricinctus E.C. Von Martens, 1893 - syn of: Orthalicus ferussaci tricinctus E.C. Von Martens, 1893 - (ORTHALICIDAE)
- maracaiboensis, Hercoglossa maracaiboensis Miller & Collinson, 1951 † - (HERCOGLOSSIDAE) (FOSSIL)
- maracandensis, Buliminus maracandensis O.W. Von Rosen, 1901 - syn of: Pseudonapaeus trigonochilus (C.M.F. Ancey, 1886) - (ENIDAE)
- maracatu, Eccliseogyra maracatu S.F.B. de Lima & M.L. Christoffersen, 2013 - (NYSTIELLIDAE)
- maracuya, Melanella maracuya J. Espinosa, J.A. Ortea & J. Magaña, 2001 - (EULIMIDAE)
- maracuya, Vitreolina maracuya J. Espinosa, J.A. Ortea & J. Magaña, 2001 - (EULIMIDAE)
- maraguanensis, Torrecoptis maraguanensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- maraguanensis, Torrecoptis livida maraguanensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- maraisi, Acmaea maraisi (R.N. Kilburn, 1977) - syn of: Patelloida maraisi (R.N. Kilburn, 1977) - (ACMAEIDAE)
- maraisi, Caecum maraisi A. Vannozzi, M. Pizzini & B.K. Raines, 2015 - (CAECIDAE)
- maraisi, Epitonium maraisi R.N. Kilburn, 1985 - (EPITONIIDAE)
- maraisi, Patelloida maraisi (R.N. Kilburn, 1977) - (LOTTIIDAE)
- maraisi, Gingicithara maraisi R.N. Kilburn, 1992 - (MANGELIIDAE)
- maraisi, Mitromorpha maraisi R.N. Kilburn, 1986 - (MITROMORPHIDAE)
- maraisi, Favartia maraisi (E.H. Vokes, 1978) - (MURICIDAE)
- maraisi, Pygmaepterys maraisi (E.H. Vokes, 1978) - syn of: Favartia maraisi (E.H. Vokes, 1978) - (MURICIDAE)
- maraisi, Sukashitrochus maraisi D.G. Herbert, 1986 - syn of: Sukashitrochus dorbignyi (J.V. Audouin, 1826) - (SCISSURELLIDAE)
- maraisorum, Scissurella maraisorum D.L. Geiger, 2006 - (SCISSURELLIDAE)
- Maralsenia, Genus Maralsenia Pacaud, 2009 (PSEUDOLIVIDAE) (FOSSIL)
- marama, Cyclocardia marama (P.A. Maxwell, 1969 †) - (CARDITIDAE) (FOSSIL)
- marama, Maorithyas marama C.A. Fleming, 1950 - (THYASIRIDAE)
- Marama, Genus Marama Marwick, 1927 (VENERIDAE) (FOSSIL)
- maramaensis, Neothauma maramaensis Musalizi, 2017 † - (VIVIPARIDAE) (FOSSIL)
- maramuniensis, Longobardites maramuniensis (Skwarko, 1973 †) - (LONGOBARDITIDAE) (FOSSIL)
- maranajensis, Faustina maranajensis (A.J. Wagner, 1914) - (HELICIDAE)
- marangensis, Elaphroconcha marangensis (T.H. Aldrich, 1898) - (ARIOPHANTIDAE)
- marangensis, Philalanka marangensis (T.H. Aldrich, 1898) - (ENDODONTIDAE)
- maranguapensis, Cyclodontina inflata maranguapensis F.C. Baker, 1914 - (ODONTOSTOMIDAE)
- maranguense, Polytoxon copleyi maranguense B. Verdcourt, 1961 - (UROCYCLIDAE)
- maranhonensis, Bulimus maranhonensis J.A. Albers, 1854 - syn of: Sultana maranhonensis (J.A. Albers, 1854) - (BULIMULIDAE)
- maranhonensis, Cylindronenia maranhonensis (J.A. Albers, 1854) - (CLAUSILIIDAE)
- maranhonensis, Sultana maranhonensis (J.A. Albers, 1854) - (ORTHALICIDAE)
- maranhonensis terrestris, Cylindronenia maranhonensis terrestris W.K. Weyrauch, 1964 - (CLAUSILIIDAE)
- Maranhoniellus, Subgenus Rabdotus (Maranhoniellus) W.K. Weyrauch, 1958 (BULIMULIDAE)
- maranii, Joculator maranii A. Cecalupo & I. Perugia, 2014 - (CERITHIOPSIDAE)
- maranii, Scabrotrophon maranii Houart & Héros, 2016 - (MURICIDAE)
- maranii, Anticlimax maranii F. Rubio & E. Rolán, 2014 - (TORNIDAE)
- maranitra, Parvedentulina maranitra K.C. Emberton, 2002 - (STREPTAXIDAE)
- maranjoae, Bunnya maranjoae M.C. Miller, 1987 - (HUMBOLDTIANIDAE)
- maranonensis, Naesiotus subcostatus maranonensis A.S.H. Breure, 1978 - (BULIMULIDAE)
- marasensis, Vermiculatus cuzcoensis marasensis (W.K. Weyrauch, 1967) - (BULIMULIDAE)
- marashi, Pseudamnicola marashi P. Glöer, M.E. Gürlek & C. Kara, 2014 - (HYDROBIIDAE)
- marasinica, Bithynia marasinica N.I. Andrusov, 1909 † - (BITHYNIIDAE) (FOSSIL)
- marateensis, Helix marateensis W. Kobelt, 1904 - syn of: Ambigua fuscolabiata saprensis (W. Kobelt, 1904) - (HELICIDAE)
- marathonensis, Neocrimites marathonensis (Böse 1919 †) - (ADRIANITIDAE) (FOSSIL)
- Marathonites, Genus Marathonites Plummer & Scott, 1937 (ADRIANITIDAE) (FOSSIL)
- MARATHONITIDAE Ruzhencev, 1938 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-MARATHONITOIDEA [Superfamily]) (FOSSIL)
- maratima, Triodopsis maratima H.A. Pilsbry, 1890 - (POLYGYRIDAE)
- Maraunibina, syn of: Genus Pontohedyle A.N. Golikov & Y.I. Starobogatov, 1972 (PARHEDYLIDAE)
- maravignae, Crassopleura maravignae (Ant. Bivona-Bernardi in And. Bivona-Bernardi, 1838) - (DRILLIIDAE)
- maravignae, Daudebardia rufa maravignae (E. Pirajno, 1840) - (OXYCHILIDAE)
- maravignae, Thracia maravignae A. Aradas & P. Calcara, 1843 - syn of: Thracia convexa (Wood, 1815) - (THRACIIDAE)
- maravignae, Pleurotoma maravignae Ant. Bivona-Bernardi in And. Bivona-Bernardi, 1838 - syn of: Crassopleura maravignae (Ant. Bivona-Bernardi in And. Bivona-Bernardi, 1838) - (TURRIDAE)
- Maravignia, syn of: Genus Fossarus R.A. Philippi, 1841 (PLANAXIDAE)
- marbellensis, Tambja marbellensis J. Schick & J.L. Cervera, 1998 - (POLYCERIDAE)
- marblecreekensis, Orthonychia marblecreekensis Talent & Philip, 1956 † - (ORTHONYCHIIDAE) (FOSSIL)
- Marbodeia, Genus Marbodeia Haber, 1932 (LOTTIIDAE)
- marcaisi, Monodonta marcaisi d'Orbigny, 1842 † - (TROCHIDAE) (FOSSIL)
- marcapatensis, Drymaeus marcapatensis A.S.H. Breure, 1979 - (BULIMULIDAE)
- marcapatensis, Columbinia marcapatensis H. Nordsieck, 2010 - (CLAUSILIIDAE)
- marceauxi, Arca marceauxi G.P. Deshayes, 1858 † - (ARCIDAE) (FOSSIL)
- marceauxi, Marinula marceauxi G.P. Deshayes, 1863 † - (ELLOBIIDAE) (FOSSIL)
- marceauxi, Semiterebellum marceauxi G.P. Deshayes, 1865 † - (ROSTELLARIIDAE) (FOSSIL)
- marceauxiana, Barbatia marceauxiana G.P. Deshayes, 1858 † - (ARCIDAE) (FOSSIL)
- marceda, Litharium marceda (C.F. Laseron, 1958) - (TRIPHORIDAE)
- marcelia, Clausilia marcelia A. Risso, 1826 - syn of: Clausilia bidentata (H. Strøm, 1765) - (CLAUSILIIDAE)
- marcellae, Rhyncolites marcellae Tuuk, 1985 † - (CEPHALOPODA (UNASSIGNED)) (FOSSIL)
- marcellense, Lunulicardia marcellense (Vanuxem, 1842 †) - (CARDIIDAE) (FOSSIL)
- marcellensis, Centroceras marcellensis (Vanuxem, 1842 †) - (CENTROCERATIDAE) (FOSSIL)
- marcellinus, Unio marcellinus J. Berthier, 1882 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- marcelpini, Fusinus bocagei marcelpini R. Hadorn & P. Ryall, 1999 - (FASCIOLARIIDAE)
- marcescens, Galadistes marcescens (J.C. Cox, 1868) - (CAMAENIDAE)
- marceti, Xerocrassa marceti P. Fagot, 1906 - syn of: Amandana salvanae (P. Fagot, 1886) - (HYGROMIIDAE)
- marchadi, Crassatina marchadi R. von Cosel, 1995 - syn of: Salaputium modestum (H. Adams, 1869) - (CRASSATELLIDAE)
- marchadi, Graptacme marchadi (M. Nicklés, 1979) - (DENTALIIDAE)
- marchadi, Asteronotus marchadi J.J. Risbec, 1956 - syn of: Asteronotus cespitosus (J.C. van Hasselt, 1824) - (DISCODORIDIDAE)
- marchadi, Gadila marchadi (M. Nicklés, 1979) - (GADILIDAE)
- marchadi, Kyllinia marchadi (J. Knudsen, 1956 †) - (MANGELIIDAE) (FOSSIL)
- marchadi, Natica marchadi M. Pin, 1992 - (NATICIDAE)
- marchadi, Diaugasma marchadi (J. Knudsen, 1956 †) - syn of: Kyllinia marchadi (J. Knudsen, 1956 †) - (RAPHITOMIDAE) (FOSSIL)
- marchadi, Alvania marchadi S. Gofas, 1999 - (RISSOIDAE)
- marchadi, Dendropoma marchadi A.M. Keen & J.E. Morton, 1960 - (VERMETIDAE)
- marchali, Mysia marchali R. von Cosel, 1995 - (VENERIDAE)
- marchamensis, Natica marchamensis J.F. Blake & W.H. Hudleston 1877 † - (NATICIDAE) (FOSSIL)
- marchandi, Genota marchandi M. Pin, 1996 - (BORSONIIDAE)
- marchandi, Janusites marchandi (J.J. Bert, Delanoy & Bersac, 2006 †) - (HEMIHOPLITIDAE) (FOSSIL)
- marchandi, Taramelliceras marchandi Quéreilhac, 2009 † - (OPPELIIDAE) (FOSSIL)
- marchandi, Sassia marchandi A.E.M. Cossmann, 1905 † - (RANELLIDAE) (FOSSIL)
- marchanti, Powelliphanta marchanti (A.W.B. Powell, 1932) - (RHYTIDIDAE)
- marchanti, Paryphanta marchanti A.W.B. Powell, 1932 - syn of: Powelliphanta marchanti (A.W.B. Powell, 1932) - (RHYTIDIDAE)
- marchei, Lienardia marchei F.P. Jousseaume, 1884 - (CLATHURELLIDAE)
- marchei, Cyclostrema marchei F.P. Jousseaume, 1872 - (LIOTIIDAE)
- marchei, Circulus marchei (F.P. Jousseaume, 1872) - (TORNIDAE)
- marchei tuberculifera, Lienardia marchei tuberculifera (R.P.J. Hervier, 1896) - (CLATHURELLIDAE)
- marchesettii, Dilataria succineata marchesettii (A. Stossich, 1883) - (CLAUSILIIDAE)
- marchettii, Monacha marchettii C. De Stefani, 1883 - syn of: Eutheba cantiana (G. Montagu, 1803) - (HYGROMIIDAE)
- Marchia, syn of: Genus Pterynotus W.J. Swainson, 1833 (MURICIDAE)
- marchianae, Helix marchianae C.M.D.E. Legrand, 1871 - syn of: Thryasona diemenensis (J.C. Cox, 1868) - (HELICIDAE)
- marchii, Cryptospira marchii F.P. Jousseaume, 1875 - syn of: Cryptospira strigata (L.W. Dillwyn, 1817) - (MARGINELLIDAE)
- marchionatus, Eugeniconus marchionatus (R.B. Hinds, 1843) - (CONIDAE)
- marchionatus eudoxus, Conus marchionatus eudoxus G.W. Tryon, 1884 - syn of: Eugeniconus marchionatus (R.B. Hinds, 1843) - (CONIDAE)
- marchionatus eudoxus, Conus marchionatus eudoxus J.C. Melvill in G.W. Tryon, 1883 - syn of: Eugeniconus marchionatus (R.B. Hinds, 1843) - (CONIDAE)
- marchionissa, Helicina marchionissa J.B. Hombron & C.H. Jacquinot, 1848 - (HELICINIDAE)
- marchmontensis, Acteonella marchmontensis N.F. Sohl & H.A. Kollmann, 1985 † - (ACTEONELLIDAE) (FOSSIL)
- marci, Felimare marci (Ev. Marcus, 1971) - (CHROMODORIDIDAE)
- marci, Lithoglyphus marci D. Esu & O. Girotti, 2015 † - (LITHOGLYPHIDAE) (FOSSIL)
- marci, Physa marci F.C. Baker, 1924 - syn of: Haitia mexicana (R.A. Philippi, 1841) - (PHYSIDAE)
- marci, Odetta marci (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - (PYRAMIDELLIDAE)
- marci, Odostomia marci (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - syn of: Odetta marci (J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998) - (PYRAMIDELLIDAE)
- marci, Pisidium marci V. Sterki, 1909 - syn of: Pisidium subtruncatum A.W. Malm, 1855 - (SPHAERIIDAE)
- marcia, Bistolida marcia T. Iredale, 1939 - syn of: Bistolida kieneri depriesteri F.A. Schilder, 1933 - (CYPRAEIDAE)
- Marcia, Genus Marcia H. Adams & A. Adams, 1857 (VENERIDAE)
- marciae, Vexillum amandum marciae G.B. III Sowerby, 1913 - (COSTELLARIIDAE)
- marciae, Vertigo marciae J.C. Nekola & G. Rosenberg, 2013 - (VERTIGINIDAE)
- marcianus, Eopachydiscus marcianus (Shumard, 1854 †) - (PACHYDISCIDAE) (FOSSIL)
- marcida, Pyrgulopsis marcida R. Hershler, 1998 - (HYDROBIIDAE)
- marcida, Mactra marcida A.A. Gould, 1850 - syn of: Mulinia edulis (King, 1831) - (MACTRIDAE)
- marcida, Tegula marcida A.A. Gould, 1853 - (TEGULIDAE)
- marcida, Madeirovitrina marcida T.V. Wollaston, 1878 - syn of: Madeirovitrina media (R.T. Lowe, 1854) - (VITRINIDAE)
- marcidum, Cupedora marcidum (C. Hedley, 1912) - (CAMAENIDAE)
- marcidus, Bulimulus marcidus L. Pfeiffer, 1853 - (BULIMULIDAE)
- marcidus, Phenacolimax marcidus (A.A. Gould, 1848) - (VITRINIDAE)
- Marciella, syn of: Genus Herviella K. Baba, 1949 (GLAUCIDAE)
- marcignyana, Ostrea marcignyana Martin, 1860 † - (OSTREIDAE) (FOSSIL)
- marckeppensi, Conus marckeppensi (T. Cossignani & R. Fiadeiro, 2017) - (CONIDAE)
- marcki, Dilataria marcki (L. Pfeiffer, 1868) - (CLAUSILIIDAE)
- marco, Stolidotus marco Kríž, 2005 † - (STOLIDOTIDAE) (FOSSIL)
- marcocastellazzii, Africonus marcocastellazzii T. Cossignani & R. Fiadeiro, 2014 - (CONIDAE)
- marcoense, Epitonium candeanum marcoense W.H. Dall, 1927 - (EPITONIIDAE)
- marcoensis, Murex marcoensis G.B. III Sowerby, 1900 - syn of: Vokesimurex rubidus (F.C. Baker, 1897) - (MURICIDAE)
- marcoi, Linopyrga marcoi E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- marcominii, Coptostoma marcominii P. Lozouet, 2015 † - (CANCELLARIIDAE) (FOSSIL)
- marcominii, Bernaya marcominii Dolin & Aguerre, 2016 † - (CYPRAEIDAE) (FOSSIL)
- Marconia, Genus Marconia J.R. Bourguignat, 1889 (STREPTAXIDAE)
- marcosensis, Maderia marcosensis Imlay, 1940 † - (OLCOSTEPHANIDAE) (FOSSIL)
- marcosi, Parviturbo marcosi F. Rubio, E. Rolán & R. Fernández-Garcés, 2015 - (SKENEIDAE)
- marcottae, Cymatoica marcottae A.A. Olsson & R.E. Petit, 1964 † - (TELLINIDAE) (FOSSIL)
- marcottae, Leukoma marcottae A.A. Olsson & R.E. Petit, 1964 † - (VENERIDAE) (FOSSIL)
- marcouana, Margarites marcouana Cragin, 1894 † - syn of: Amberleya mudgeana (F.B. Meek, 1871 †) - (MARGARITIDAE) (FOSSIL)
- marcouana, Nerita marcouana Cragin, 1895 † - (NERITIDAE) (FOSSIL)
- marcouensis, Jakobina marcouensis Kerber, 1988 † - (MAIKHANELLIDAE) (FOSSIL)
- marcoui, Proarcestes marcoui (Mojsisovics, 1875 †) - (ARCESTIDAE) (FOSSIL)
- marcoui, Dieneroceras marcoui (A. Hyatt & Smith, 1905 †) - (COLUMBITIDAE) (FOSSIL)
- marcoui, Suecoceras marcoui Ruedemann, 1906 † - (ENDOCERATIDAE) (FOSSIL)
- marcoui, Texigryphaea marcoui J. Hill & Vaughan, 1898 † - syn of: Gryphaea mucronata W.M. Gabb, 1869 † - (GRYPHAEIDAE) (FOSSIL)
- marcoui, Neogeoceras marcoui (C. Gemmellaro, 1887 †) - (MEDLICOTTIIDAE) (FOSSIL)
- marcoui, Xenodiscus marcoui A. Hyatt & Smith, 1905 † - syn of: Dieneroceras marcoui (A. Hyatt & Smith, 1905 †) - (MEEKOCERATIDAE) (FOSSIL)
- marcoui, Nautilus marcoui d'Orbigny, 1850 † - syn of: Yakutionautilus kavalerovae Arkhipov & I.S. Barskov, 1970 † - (NAUTILIDAE) (FOSSIL)
- marcoui, Alectryonia marcoui Bose, 1910 † - syn of: Lopha subovata Shumard, 1854 † - (OSTREIDAE) (FOSSIL)
- marcouiana, Ananias marcouiana (H.B. Geinitz, 1866 †) - (GOSSELETINIDAE) (FOSSIL)
- marcouiana, Pleurotomaria marcouiana H.B. Geinitz, 1866 † - syn of: Ananias marcouiana (H.B. Geinitz, 1866 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- marcouianus, Retispira marcouianus (H.B. Geinitz, 1866 †) - (KNIGHTITIDAE) (FOSSIL)
- Marcouxia, Genus Marcouxia Guex & al., 2005 (COLUMBITIDAE) (FOSSIL)
- Marcouxites, Genus Marcouxites Monnet & Bucher, 2005 (CERATITIDAE) (FOSSIL)
- marcuccii, Truncatellina marcuccii C. De Stefani, 1883 - syn of: Truncatellina callicratis (A. Scacchi, 1833) - (VERTIGINIDAE)
- marcuscoltroi, Erosaria acicularis marcuscoltroi E.J. Petuch & R.F. Myers, 2015 - (CYPRAEIDAE)
- marcusi, Acmaea marcusi G. Righi, 1966 - syn of: Lottia marcusi (G. Righi, 1966) - (ACMAEIDAE)
- marcusi, Berghia marcusi M. Domínguez, J.S. Troncoso & F.J. García, 2008 - (AEOLIDIIDAE)
- marcusi, Bosellia marcusi Ev. Marcus, 1972 - syn of: Elysia marcusi (Ev. Marcus, 1972) - (BOSELLIIDAE)
- marcusi, Semicassis marcusi Garvie, 2013 † - (CASSIDAE) (FOSSIL)
- marcusi, Abida braunii marcusi E. Gittenberger & T.E.J. Ripken, 1993 - (CHONDRINIDAE)
- marcusi, Conasprella marcusi (E.J. Petuch, D.P. Berschauer & Poremski, 2016) - (CONIDAE)
- marcusi, Conualevia marcusi A.W. Collier & M. Farmer, 1964 - (DORIDIDAE)
- marcusi, Fusinus marcusi R. Hadorn & B. Rogers, 2000 - (FASCIOLARIIDAE)
- marcusi, Stenoplax marcusi (G. Righi, 1971) - (ISCHNOCHITONIDAE)
- marcusi, Lottia marcusi (G. Righi, 1966) - (LOTTIIDAE)
- marcusi, Muricopsis marcusi E.H. Vokes, 1994 - (MURICIDAE)
- marcusi, Anodontites marcusi J.C. Mendes, 1939 - syn of: Anodontites trapesialis (J.B.P.A. Lamarck, 1818) - (MYCETOPODIDAE)
- marcusi, Philinoglossa marcusi D.A. Challis, 1969 - (PHILINOGLOSSIDAE)
- marcusi, Elysia marcusi (Ev. Marcus, 1972) - (PLAKOBRANCHIDAE)
- marcusi, Rhodope marcusi L. Salvini-Plawén, 1991 - (RHODOPIDAE)
- marcusiana, Calocochlia marcusiana A. Falconieri, 2008 - (BRADYBAENIDAE)
- marcusorum, Flabellina marcusorum T.M. Gosliner & A.M. Kuzirian, 1990 - (FLABELLINIDAE)
- marcusseni, Actaeopyramis marcusseni Schnetler, 2001 † - (CIMIDAE) (FOSSIL)
- marcyae, Mandaloceras marcyae (Winchell & Marcy †) - (MANDALOCERATIDAE) (FOSSIL)
- mardieae, Persististrombus mardieae (E.J. Petuch, 2004 †) - (STROMBIDAE) (FOSSIL)
- mardinensis, Levantina mardinensis W. Kobelt, 1900 - (HELICIDAE)
- mardinensis, Leguminaia mardinensis I. Lea, 1864 - syn of: Leguminaia wheatleyi (I. Lea, 1862) - (UNIONIDAE)
- mardonesae, Cabrieroceras mardonesae Montesinos, 1988 † - (WERNEROCERATIDAE) (FOSSIL)
- mareana, Lirastrombina mareana (N.E. Weisbord, 1962 †) - (COLUMBELLIDAE) (FOSSIL)
- mareana, Cylichnella mareana N.E. Weisbord, 1962 - syn of: Cylichnella bidentata (A.V.M.D. D'Orbigny, 1841) - (CYLICHNIDAE)
- mareana, Persicula interruptolineata mareana N.E. Weisbord, 1962 - (CYSTISCIDAE)
- mareana, Clathrodrillia mareana N.E. Weisbord, 1962 † - syn of: Clathrodrillia gatunensis (F. Toula, 1909 †) - (DRILLIIDAE) (FOSSIL)
- mareana, Emarginula mareana N.E. Weisbord, 1962 † - (FISSURELLIDAE) (FOSSIL)
- mareana, Ennucula mareana (N.E. Weisbord, 1964) - (NUCULIDAE)
- mareana, Nucula mareana N.E. Weisbord, 1964 - syn of: Ennucula dalmasi (P. Dautzenberg, 1900) - (NUCULIDAE)
- mareana, Malea mareana N.E. Weisbord, 1962 † - (TONNIDAE) (FOSSIL)
- mareana, Diplodonta mareana N.E. Weisbord, 1964 - syn of: Foveamysia soror (C.B. Adams, 1852) - (UNGULINIDAE)
- mareanus, Placostylus fibratus mareanus (J.C.H. Crosse, 1870) - (BOTHRIEMBRYONTIDAE)
- marebiensis, Pupoides marebiensis J.R. Bourguignat, 1876 - syn of: Pupoides coenopictus (F.W. Hutton, 1834) - (PUPILLIDAE)
- marefugitus, Aiteng marefugitus Y. Kano, T.P. Neusser & al., 2015 - (AITENGIDAE)
- mareki, Mytilarca mareki Kríž & Steinová, 2009 † - (AMBONYCHIIDAE) (FOSSIL)
- mareki, Cambretina mareki Horný, 1964 † - (PELAGIELLIDAE) (FOSSIL)
- mareki, Boucotonotus mareki (Horný, 1963 †) - (PLECTONOTIDAE) (FOSSIL)
- Marekicella, Genus Marekicella Hornύ, 1997 (ARCHINACELLIDAE) (FOSSIL)
- Marekites, Genus Marekites Kostak, 2002 (PALAEOLOLIGINIDAE) (FOSSIL)
- Mareleptopoma, Genus Mareleptopoma R.G. Moolenbeek & M.J. Faber, 1984 (PICKWORTHIIDAE)
- marella, Nuculana marella (L.G. Hertlein, G.D. Hanna & A.M. Strong, 1940) - (NUCULANIDAE)
- marella, Nucula marella L.G. Hertlein, G.D. Hanna & A.M. Strong, 1940 - syn of: Nuculana marella (L.G. Hertlein, G.D. Hanna & A.M. Strong, 1940) - (NUCULIDAE)
- marense, Crucibulum marense N.E. Weisbord, 1962 - (CALYPTRAEIDAE)
- marensis, Fusinus marensis N.E. Weisbord, 1962 - syn of: Fusinus dilectus Adams, 1856 - (FASCIOLARIIDAE)
- marensis, Fusinus marensis N.E. Weisbord, 1962 - syn of: Fusinus dilectus Adams, 1856 - (FASCIOLARIIDAE)
- marensis, Lioberus marensis Weisbord 1964 † - (MYTILIDAE) (FOSSIL)
- marensis, Euvola marensis (N.E. Weisbord, 1964) - (PECTINIDAE)
- marensis, Pitar marensis (Weisbord 1964) † - (VENERIDAE) (FOSSIL)
- marenzelleri, Chromodoris marenzelleri L.S.R. Bergh, 1888 - syn of: Hypselodoris festiva (A. Adams, 1861) - (CHROMODORIDIDAE)
- mareoticus, Planorbis mareoticus W. Innes, 1884 - syn of: Gyraulus ehrenbergi (H.H. Beck, 1837) - (PLANORBIDAE)
- marerosa, Eucithara marerosa R.N. Kilburn, 1992 - (MANGELIIDAE)
- marerubra, Pustularia marerubra F.Jr. Lorenz, 2009 - (CYPRAEIDAE)
- marerubra, Limopsis marerubra P.G. Oliver & M. Zuschin, 2000 - (LIMOPSIDAE)
- marerubrum, Vasticardium marerubrum (R.P.A. Voskuil & W.J.H. Onverwagt, 1991) - (CARDIIDAE)
- marerubrum, Septa marerubrum (F. García-Talavera, 1985) - (RANELLIDAE)
- maresi, Idonearca maresi Coquand, 1880 † - (CUCULLAEIDAE) (FOSSIL)
- maresi, Melanopsis maresi J.R. Bourguignat, 1884 † - (MELANOPSIDAE) (FOSSIL)
- maresi, Theodoxus maresi (J.R. Bourguignat, 1864) - (NERITIDAE)
- maresi, Vertigo maresi J.R. Bourguignat, 1864 - syn of: Vertigo antivertigo J.P.R. Draparnaud, 1801 - (VERTIGINIDAE)
- maresi crenulata, Melanopsis maresi crenulata P.M. Pallary, 1901 † - (MELANOPSIDAE) (FOSSIL)
- Maresia, syn of: Genus Bythinella A. Moquin-Tandon, 1855 (BYTHINELLIDAE)
- maretensis, Succochlea maretensis F. Criscione & F. Köhler, 2014 - (CAMAENIDAE)
- mareticola, Hypermastus mareticola A. Warén & A. Norris, 1994 - (EULIMIDAE)
- Marevalvata, syn of: Genus Arene H. Adams & A. Adams, 1854 (ARENEIDAE)
- marferula, Simnialena marferula C.N. Cate, 1973 - (OVULIDAE)
- margae, Tryonia margae R. Hershler, 1989 - (COCHLIOPIDAE)
- margae, Gauthiericeras margae (F. Schlüter, 1867 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- margaeritula, Bufonaria margaeritula G.P. Deshayes, 1832 - syn of: Bufonaria margaritula (G.P. Deshayes, 1832) - (BURSIDAE)
- margalefi, Antillobia margalefi C.R. Altaba, 1993 - (HYDROBIIDAE)
- Margarella, Genus Margarella K.H.J. Thiele in F.H. Troschel, 1893 (CALLIOSTOMATIDAE)
- margaretae, Achatinella casta margaretae H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- margaretae, Actinoceras margaretae Flower, 1957 † - (ACTINOCERATIDAE) (FOSSIL)
- margaretae, Anadara margaretae C.J. Maury, 1917 † - (ARCIDAE) (FOSSIL)
- margaretae, Noumea margaretae R.F. Burn, 1966 - syn of: Noumea haliclona (R.F. Burn, 1957) - (CHROMODORIDIDAE)
- margaretae, Ficus margaretae T. Iredale, 1931 - syn of: Ficus ficus subintermedia (A.V.M.D. D'Orbigny, 1852) - (FICIDAE)
- margaretae, Triptychia margaretae Andreae, 1904 † - (FILHOLIIDAE) (FOSSIL)
- margaretae, Gastrocopta margaretae (J.C. Cox, 1868) - (GASTROCOPTIDAE)
- margaretae, Limatula margaretae J.A. Allen, 2004 - (LIMIDAE)
- margaretae, Liguus fasciatus margaretae A.M. Jones, 1979 - (ORTHALICIDAE)
- margaretae, Plocamopherus margaretae Y. Vallès & T.M. Gosliner, 2006 - (POLYCERIDAE)
- margaretae, Daphnella margaretae W.G. Lyons, 1972 - (RAPHITOMIDAE)
- margarethae, Barbatia margarethae J.C. Melvill & R. Standen, 1907 - syn of: Arcopsis sculptilis (L.A. Reeve, 1844) - (ARCIDAE)
- margarethae, Colubraria margarethae D. Monsecour & D. Monsecour, 2011 - (COLUBRARIIDAE)
- margarethae, Striarca margarethae J.C. Melvill & R. Standen, 1907 - syn of: Arcopsis sculptilis (L.A. Reeve, 1844) - (NOETIIDAE)
- margarethae, Wortheniopsis margarethae (E.A.L. Kittl, 1894 †) - (PLETHOSPIRIDAE) (FOSSIL)
- margariana, Paludina margariana J. Anderson, 1878 - syn of: Margarya melanioides G. Nevill, 1877 - (VIVIPARIDAE)
- margariana carinata, Vivipara margariana carinata M. von Neumayr, 1887 - syn of: Margarya melanioides G. Nevill, 1877 - (VIVIPARIDAE)
- margariana rotundata, Vivipara margariana rotundata M. von Neumayr, 1887 - syn of: Margarya francheti (J.F. Mabille, 1886) - (VIVIPARIDAE)
- margariana tuberculata, Vivipara margariana tuberculata M. von Neumayr, 1887 - syn of: Margarya melanioides G. Nevill, 1877 - (VIVIPARIDAE)
- margaridae, Abida secale margaridae L.A. Beck, 1988 - (CHONDRINIDAE)
- Margarijuvavites, Genus Margarijuvavites Tozer, 1994 (JUVAVITIDAE) (FOSSIL)
- margarina, Tellina margarina J.B.P.A. Lamarck, 1818 - syn of: Tellina margaritina (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- Margariona, syn of: Genus Dimya M. Rouault, 1848 (DIMYIDAE)
- margarita, Achatinella margarita L. Pfeiffer - syn of: Leptachatina accincta (J.W. Mighels, 1845) - (ACHATINELLIDAE)
- margarita, Omphalotropis margarita (L. Pfeiffer, 1851) - (ASSIMINEIDAE)
- margarita, Crepidula margarita L.R.L. Simone, 2006 - (CALYPTRAEIDAE)
- margarita, Cetoconcha margarita (W.H. Dall, 1886) - (CETOCONCHIDAE)
- margarita, Graphicomassa margarita (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- margarita, Mitrella margarita L.A. Reeve, 1859 - syn of: Graphicomassa margarita (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- margarita, Cyclophorus margarita L. Pfeiffer, 1851 - syn of: Omphalotropis margarita (L. Pfeiffer, 1851) - (CYCLOPHORIDAE)
- margarita, Pustularia margarita (L.W. Dillwyn, 1817) - (CYPRAEIDAE)
- margarita, Pustularia margarita T. Kira, 1959 - syn of: Pustularia globulus (C. Linnaeus, 1758) - (CYPRAEIDAE)
- margarita, Cryptocypraea margarita J.E. Gray, 1828 - syn of: Cryptocypraea dillwyni (F.A. Schilder, 1922) - (CYPRAEIDAE)
- margarita, Turridina margarita (Whidborne, 1892 †) - (DONALDINIDAE) (FOSSIL)
- margarita, Epitonium margarita (F.P. Jousseaume, 1912) - (EPITONIIDAE)
- margarita, Helix margarita L. Pfeiffer, 1845 - syn of: Proserpinula infortunata (T.B. Bland, 1854) - (HELICIDAE)
- margarita, Helix margarita G. Montagu, 1808 - syn of: Margarites helicinus (C.J. Phipps, 1774) - (HELICIDAE)
- margarita, Pseudamnicola margarita (M. von Neumayr in Herbich & M. von Neumayr, 1875 †) - (HYDROBIIDAE) (FOSSIL)
- margarita, Monacha margarita B. Hausdorf, 2000 - (HYGROMIIDAE)
- margarita, Neaeromya margarita (A.A. Olsson, 1961) - (LASAEIDAE)
- Margarita, syn of: Genus Margarites J.E. Gray, 1847 (MARGARITIDAE)
- margarita, Eratoidea margarita (L.C. Kiener, 1834) - (MARGINELLIDAE)
- margarita, Murchisonia margarita Whidborne, 1892 † - syn of: Turridina margarita (Whidborne, 1892 †) - (MURCHISONIIDAE) (FOSSIL)
- margarita, Bernardina margarita (P.P. Carpenter, 1857) - (NEOLEPTONIDAE)
- margarita, Diminovula margarita (G.B. I Sowerby, 1828) - (OVULIDAE)
- margarita, Ovula margarita A. Adams, 1854 - syn of: Diminovula concinna (G.B. II Sowerby in A. Adams & L.A. Reeve, 1848) - (OVULIDAE)
- margarita, Primovula margarita A. Adams, 1854 - syn of: Diminovula concinna (G.B. II Sowerby in A. Adams & L.A. Reeve, 1848) - (OVULIDAE)
- margarita, Ovula margarita G.B. I Sowerby, 1828 - syn of: Diminovula margarita (G.B. I Sowerby, 1828) - (OVULIDAE)
- margarita, Cyclostoma margarita L. Pfeiffer, 1853 - syn of: Omphalotropis margarita (L. Pfeiffer, 1851) - (POMATIIDAE)
- Margarita, syn of: Genus Pinctada P.F. Rφding, 1798 (PTERIIDAE)
- margarita, Odostomia margarita H.A. Pilsbry, 1918 - (PYRAMIDELLIDAE)
- margarita, Semele margarita A.A. Olsson, 1961 - syn of: Semele verrucosa O.A.L. Mörch, 1860 - (SEMELIDAE)
- margarita, Succinea margarita L. Pfeiffer, 1853 - (SUCCINEIDAE)
- margarita, Vitrinella margarita H.A. Pilsbry & A.A. Olsson, 1952 - (TORNIDAE)
- Margarita, syn of: Genus Unio L. Philipsson, 1788 (UNIONIDAE)
- margarita africana, Pustularia margarita africana F.Jr. Lorenz & A. Hubert, 1993 - (CYPRAEIDAE)
- margarita bifrons, Pseudamnicola margarita bifrons E. Jekelius, 1932 † - (HYDROBIIDAE) (FOSSIL)
- margarita globulosa, Pseudamnicola margarita globulosa E. Jekelius, 1932 † - (HYDROBIIDAE) (FOSSIL)
- margarita nuda, Pseudamnicola margarita nuda E. Jekelius, 1932 † - (HYDROBIIDAE) (FOSSIL)
- margarita tuamotensis, Pustularia margarita tuamotensis F.Jr. Lorenz, 1999 - syn of: Pustularia cicercula tuamotensis F.Jr. Lorenz, 1999 - (CYPRAEIDAE)
- margaritacea, Anomia margaritacea G.S. Poli, 1795 - syn of: Monia patelliformis (C. Linnaeus, 1773) - (ANOMIIDAE)
- margaritacea, Palaua margaritacea (C.G. Semper) - (EUCONULIDAE)
- margaritacea, Glaucus margaritacea L.A.G. d'A. Bosc, 1801 - syn of: Glaucus atlanticus F. Forster, 1777 - (GLAUCIDAE)
- margaritacea, Worthenia margaritacea (Laube, 1868 †) - (LOPHOSPIRIDAE) (FOSSIL)
- margaritacea, Nucula margaritacea J.G. Bruguière, 1789 - syn of: Nucula nucleus (C. Linnaeus, 1758) - (NUCULIDAE)
- margaritacea, Striostrea margaritacea (J.B.P.A. Lamarck, 1819) - (OSTREIDAE)
- margaritacea, Pandora margaritacea J.B.P.A. Lamarck, 1801 - syn of: Pandora albida (P.F. Röding, 1798) - (PANDORIDAE)
- margaritacea, Patella margaritacea J.F. Gmelin, 1791 - syn of: Patella caerulea C. Linnaeus, 1758 - (PATELLIDAE)
- margaritacea, Argyromya margaritacea (J.B.P.A. Lamarck, 1818 †) - (PHOLADOMYIDAE) (FOSSIL)
- margaritacea, Physa margaritacea E.C. Von Martens, 1873 - syn of: Aplexa marmorata L. Guilding, 1828 - (PHYSIDAE)
- margaritacea, Pinna margaritacea J.B.P.A. Lamarck, 1805 † - (PINNIDAE) (FOSSIL)
- margaritacea, Terebralia bidentata margaritacea F. Sacco, 1895 † - (POTAMIDIDAE) (FOSSIL)
- margaritacea, Vulsella margaritacea A. Risso, 1826 - syn of: Limatula subauriculata (G. Montagu, 1808) - (PTERIIDAE)
- margaritacea, Simrothiella margaritacea (J. Koren & D.C. Danielssen, 1877) - (SIMROTHIELLIDAE)
- margaritacea, Salasiella margaritacea (L. Pfeiffer, 1856) - (SPIRAXIDAE)
- margaritacea, Neotrigonia margaritacea (J.B.P.A. Lamarck, 1804) - (TRIGONIIDAE)
- margaritacea, Trigonia margaritacea J.B.P.A. Lamarck, 1804 - syn of: Neotrigonia margaritacea (J.B.P.A. Lamarck, 1804) - (TRIGONIIDAE)
- margaritacea, Trigonia margaritacea W.T. Bednall, 1878 - syn of: Neotrigonia bednalli (J.C. Verco, 1907) - (TRIGONIIDAE)
- margaritacea, Neotrigonia margaritacea W.T. Bednall, 1878 - syn of: Neotrigonia bednalli (J.C. Verco, 1907) - (TRIGONIIDAE)
- margaritacea, Aegopinella margaritacea A. Schmidt, 1851 - syn of: Aegopinella nitidula (J.P.R. Draparnaud, 1805) - (ZONITIDAE)
- margaritacea bednalli, Neotrigonia margaritacea bednalli J.C. Verco, 1907 - syn of: Neotrigonia bednalli (J.C. Verco, 1907) - (TRIGONIIDAE)
- margaritacea bednalli, Trigonia margaritacea bednalli J.C. Verco, 1907 - syn of: Neotrigonia bednalli (J.C. Verco, 1907) - (TRIGONIIDAE)
- margaritacea uniophora, Neotrigonia margaritacea uniophora J.E. Gray in J.B. Jukes, 1847 - syn of: Neotrigonia uniophora (Gray, 1847) - (TRIGONIIDAE)
- margaritaceum, Cerithium margaritaceum G.B. Brocchi, 1814 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (CERITHIIDAE) (FOSSIL)
- margaritaceum, Periploma margaritaceum (J.B.P.A. Lamarck, 1801) - (PERIPLOMATIDAE)
- margaritaceum granulifera, Cerithium margaritaceum granulifera J.P.S. Grateloup, 1847 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (CERITHIIDAE) (FOSSIL)
- margaritaceum moniliformis, Cerithium margaritaceum moniliformis J.P.S. Grateloup, 1847 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (CERITHIIDAE) (FOSSIL)
- margaritaceus, Murex margaritaceus G.B. Brocchi, 1814 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (MURICIDAE) (FOSSIL)
- margaritaceus, Modiolus margaritaceus (S. Nomura & K.M. Hatai, 1940) - (MYTILIDAE)
- margaritaceus, Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (POTAMIDIDAE) (FOSSIL)
- margaritaceus, Tectus margaritaceus G.P. Deshayes, 1832 † - (TEGULIDAE) (FOSSIL)
- margaritaceus, Phorcus margaritaceus A. Risso, 1826 - syn of: Phorcus richardi (B.C.M. Payraudeau, 1826) - (TROCHIDAE)
- margaritaceus, Turbo margaritaceus C. Linnaeus, 1758 - syn of: Marmarostoma argyrostomus (C. Linnaeus, 1758) - (TURBINIDAE)
- margaritaceus, Thylacodes margaritaceus (C. Rousseau in J.C. Chenu, 1844) - (VERMETIDAE)
- margaritaceus, Vermetus margaritaceus C. Rousseau in J.C. Chenu, 1844 - syn of: Thylacodes margaritaceus (C. Rousseau in J.C. Chenu, 1844) - (VERMETIDAE)
- margaritaceus bearnensis, Tympanotonos margaritaceus bearnensis A.E.M. Cossmann & M.A. Peyrot, 1922 † - (POTAMIDIDAE) (FOSSIL)
- margaritaceus calcaratus, Tympanotonus margaritaceus calcaratus J.P.S. Grateloup, 1840 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (POTAMIDIDAE) (FOSSIL)
- margaritaceus grateloupi, Tympanotonos margaritaceus grateloupi (A.V.M.D. D'Orbigny, 1852 †) - (POTAMIDIDAE) (FOSSIL)
- margaritaceus typicocalcaratus, Tympanotonus margaritaceus typicocalcaratus L. Vignal, 1910 † - syn of: Tympanotonos margaritaceus (G.B. Brocchi, 1814 †) - (POTAMIDIDAE) (FOSSIL)
- margaritae, Pukunia margaritae C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- margaritae, Spurilla margaritae A. Labbé, 1923 - syn of: Berghia verrucicornis (A. da Costa, 1867) - (AEOLIDIIDAE)
- margaritae, Garniericeras margaritae Schulgina, 1969 † - syn of: Khetoceras margaritae (Schulgina, 1969 †) - (AMMONOIDEA (unassigned)) (FOSSIL)
- margaritae, Asuranena margaritae (A.A. Schileyko & S.E. Moiseeva, 1989) - (ENIDAE)
- margaritae, Margaritoceras margaritae Cecioni & Flower, 1985 † - (EOTHINOCERATIDAE) (FOSSIL)
- margaritae, Fusinus margaritae G. Buzzurro & P. Russo, 2007 - (FASCIOLARIIDAE)
- margaritae, Amandana cisternasi margaritae (S.G.A. Jaeckel, 1952) - (HYGROMIIDAE)
- margaritae, Ercolania margaritae R.F. Burn, 1974 - (LIMAPONTIIDAE)
- margaritae, Propebela margaritae (I.P. Bogdanov, 1985) - (MANGELIIDAE)
- margaritae, Calotrophon margaritae (A.E.M. Cossmann & A. Lambert, 1884 †) - (MURICIDAE) (FOSSIL)
- margaritae, Neritilia margaritae G. Pérez-Dionis, J. Espinosa & J.A. Ortea, 2010 - (NERITILIIDAE)
- margaritae, Uraloceras margaritae Kutygin & Ganelin, 2011 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- margaritae, Samoana margaritae D.M. Crampton & C.M. Cooke, 1953 - (PARTULIDAE)
- margaritae, Elysia margaritae S .de Fez, 1962 - (PLAKOBRANCHIDAE)
- margaritae, Khetoceras margaritae (Schulgina, 1969 †) - (POLYPTYCHITIDAE) (FOSSIL)
- margaritae, Comitas margaritae (E.A. Smith, 1904) - (PSEUDOMELATOMIDAE)
- margaritae, Rhiphaeoteuthis margaritae Doguzhaeva, 2002 † - (RHIPHAEOTEUTHIDAE) (FOSSIL)
- margaritae, Rimella margaritae A.E.M. Cossmann, 1903 † - (RIMELLIDAE) (FOSSIL)
- margaritae, Megalomphalus margaritae E. Rolán & F. Rubio, 1998 - (VANIKORIDAE)
- margaritaeformis, Pseudamnicola margaritaeformis (N.I. Andrusov, 1905 †) - (HYDROBIIDAE) (FOSSIL)
- margaritaeformis, Eunaticina margaritaeformis W.H. Dall, 1924 - (NATICIDAE)
- Margaritana, syn of: Genus Margaritifera H.C.F. Schumacher, 1816 (MARGARITIFERIDAE)
- margaritana, Melongena margaritana H.G. Richards, 1943 - syn of: Melongena melongena (C. Linnaeus, 1758) - (MELONGENIDAE)
- margaritana, Melongena margaritana H.G. Richards, 1943 - syn of: Melongena melongena (C. Linnaeus, 1758) - (MELONGENIDAE)
- margaritana, Voluta margaritana A.H. Verrill, 1954 - syn of: Voluta musica C. Linnaeus, 1758 - (VOLUTIDAE)
- Margaritanopsis, syn of: Genus Margaritifera H.C.F. Schumacher, 1816 (MARGARITIFERIDAE)
- margaritanopsis, Unio margaritanopsis É.A.A. Locard, 1889 - syn of: Pseudunio auricularius (L. Spengler, 1793) - (UNIONIDAE)
- margaritanus, Septifer margaritanus Nomland, 1917 † - (MYTILIDAE) (FOSSIL)
- Margaritaria, Genus Margaritaria Conrad, 1849 (MARGARITARIIDAE) (FOSSIL)
- MARGARITARIIDAE Vokes, 1964 - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-ANOMALODESMATA [Order]-PHOLADOMYOIDEA [Superfamily]) (FOSSIL)
- margaritarius, Clanculus margaritarius (R.A. Philippi, 1846) - (TROCHIDAE)
- margaritarius multipunctatus, Clanculus margaritarius multipunctatus P. Jansen, 1995 - syn of: Clanculus multipunctatus P. Jansen, 1995 - (TROCHIDAE)
- margaritarius unedo, Clanculus margaritarius unedo L.A. Reeve, 1851 - (TROCHIDAE)
- margaritarum, Vermetus margaritarum A. Valenciennes, 1846 - syn of: Thylacodes margaritaceus (C. Rousseau in J.C. Chenu, 1844) - (VERMETIDAE)
- margaritata, Mortoniceras margaritata F. Haas 1942 † - (BRANCOCERATIDAE) (FOSSIL)
- margaritata, Murchisonia margaritata Lotz, 1900 † - (MURCHISONIIDAE) (FOSSIL)
- margaritata, Gemmula margaritata (P. Marshall, 1919 †) - (TURRIDAE) (FOSSIL)
- margaritatus, Amaltheus margaritatus de Montford, 1808 † - (AMALTHEIDAE) (FOSSIL)
- margaritatus, Costapex margaritatus A.E. Fedosov, M. Herrmann & P. Bouchet, 2017 - (COSTELLARIIDAE)
- margaritatus, Mitra margaritatus G.T. Poppe, S.P. Tagaro & R. Salisbury, 2009 - (MITRIDAE)
- margaritatus gibbosus, Amaltheus margaritatus gibbosus von Schlotheim, 1820 † - syn of: Amaltheus gibbosus von Schlotheim, 1820 † - (AMALTHEIDAE) (FOSSIL)
- Margaritella, syn of: Genus Margarella K.H.J. Thiele in F.H. Troschel, 1893 (CALLIOSTOMATIDAE)
- margaritella, Pugnus margaritella M.J. Faber, 2006 - (MARGINELLIDAE)
- margaritella, Proserpinula margaritella H.A. Pilsbry & A.P. Brown, 1910 - (SAGDIDAE)
- margaritensis, Bellaspira margaritensis McLean & L.H. Poorman, 1970 - (DRILLIIDAE)
- margaritensis, Phyllonotus margaritensis (R.T. Abbott, 1958) - (MURICIDAE)
- margaritensis, Murex margaritensis R.T. Abbott, 1958 - syn of: Phyllonotus margaritensis (R.T. Abbott, 1958) - (MURICIDAE)
- margaritensis, Ocenebra margaritensis W.H. Dall in M. Smith, 1939 - syn of: Favartia incisa (W.J. Broderip, 1833) - (MURICIDAE)
- Margarites, Genus Margarites J.E. Gray, 1847 (MARGARITIDAE)
- margariticola, Drupella margariticola (W.J. Broderip, 1833) - (MURICIDAE)
- margariticola, Thais margariticola W.J. Broderip in W.J. Broderip & G.B. I Sowerby, 1833 - syn of: Drupella margariticola (W.J. Broderip, 1833) - (MURICIDAE)
- margariticola, Morula margariticola W.J. Broderip in W.J. Broderip & G.B. I Sowerby, 1833 - syn of: Drupella margariticola (W.J. Broderip, 1833) - (MURICIDAE)
- margariticola, Murex margariticola W.J. Broderip in W.J. Broderip & G.B. I Sowerby, 1833 - syn of: Drupella margariticola (W.J. Broderip, 1833) - (MURICIDAE)
- margariticola, Drupa margariticola W.J. Broderip in W.J. Broderip & G.B. I Sowerby, 1833 - syn of: Drupella margariticola (W.J. Broderip, 1833) - (MURICIDAE)
- margariticola crassulnata, Ergalatax margariticola crassulnata C. Hedley, 1915 - syn of: Ergalatax crassulnata (C. Hedley, 1915) - (MURICIDAE)
- MARGARITIDAE Thiele, 1924 - Family (GASTROPODA-VETIGASTROPODA [Subclass]-TROCHOIDEA [Superfamily])
- margaritifer, Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifer, Nassarius margaritifer J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifer, Nassa margaritifer R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifer, Zeuxis margaritifer R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifera, Cassianilda margaritifera (Münster, 1841 †) - (AMPEZZANILDIDAE) (FOSSIL)
- margaritifera, Hemiphaedusa margaritifera A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CLAUSILIIDAE)
- margaritifera, Stigmatica pantocratoris margaritifera (H. Nordsieck, 1996) - (CLAUSILIIDAE)
- margaritifera, Promathildia margaritifera Münster, 1841 † - syn of: Cassianilda margaritifera (Münster, 1841 †) - (GORDENELLIDAE) (FOSSIL)
- margaritifera, Cithna margaritifera R.B. Watson, 1873 - (LIOTIIDAE)
- margaritifera, Kurtziella margaritifera W.G. Fargo, 1953 - (MANGELIIDAE)
- margaritifera, Kurtziella limonitella margaritifera A.A. Olsson & A. Harbison, 1953 † - (MANGELIIDAE) (FOSSIL)
- Margaritifera, Genus Margaritifera H.C.F. Schumacher, 1816 (MARGARITIFERIDAE)
- margaritifera, Margaritifera margaritifera (C. Linnaeus, 1758) - (MARGARITIFERIDAE)
- margaritifera, Mya margaritifera C. Linnaeus, 1758 - syn of: Margaritifera margaritifera (C. Linnaeus, 1758) - (MYIDAE)
- margaritifera, Mya margaritifera J.F. Gmelin, 1791 - syn of: Pseudunio auricularius (L. Spengler, 1793) - (MYIDAE)
- margaritifera, Nassa margaritifera R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifera, Nassarius margaritifera R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritifera, Nassa margaritifera L.A. Reeve, 1853 - syn of: Nassarius livescens (R.A. Philippi, 1849) - (NASSARIIDAE)
- margaritifera, Nucula margaritifera J.H.F. Douvillé, 1916 † - (NUCULIDAE) (FOSSIL)
- margaritifera, Natirhenia margaritifera (d'Archiac & de Verneuil, 1842 †) - (PLATYCERATIDAE) (FOSSIL)
- margaritifera, Pinctada margaritifera (C. Linnaeus, 1798) - (PTERIIDAE)
- margaritifera, Linopyrga margaritifera (L. de Folin & J.P.L. Périer, 1875) - (PYRAMIDELLIDAE)
- margaritifera, Pyroteuthis margaritifera (W.P.E.S. Rüppell, 1844) - (PYROTEUTHIDAE)
- margaritifera, Kermia margaritifera L.A. Reeve, 1846 - syn of: Kermia foraminata (L.A. Reeve, 1845) - (RAPHITOMIDAE)
- margaritifera, Benthonella margaritifera (R.B. Watson, 1886) - (RISSOIDAE)
- margaritifera, Solariella margaritifera (T.A. Okutani, 1964) - (SOLARIELLIDAE)
- margaritifera, Turritella margaritifera Münster, 1841 † - syn of: Cassianilda margaritifera (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- margaritifera, Unio margaritifera J.P.R. Draparnaud, 1801 - syn of: Pseudunio auricularius (L. Spengler, 1793) - (UNIONIDAE)
- margaritifera dahurica, Pinctada margaritifera dahurica A.T. von Middendorff, 1850 - (PTERIIDAE)
- margaritifera middendorffi, Margaritana margaritifera middendorffi O.W. Von Rosen, 1926 - syn of: Margaritifera middendorffi (O.W. Von Rosen, 1926) - (MARGARITIFERIDAE)
- margaritifera zanzibarensis, Margaritifera margaritifera zanzibarensis H.L. Jameson, 1901 - syn of: Pinctada margaritifera (C. Linnaeus, 1798) - (MARGARITIFERIDAE)
- MARGARITIFERIDAE Henderson, 1929 (1910) - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-UNIONIDA [Order]-UNIONOIDEA [Superfamily])
- margaritiferum, Buccinum margaritiferum R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (BUCCINIDAE)
- margaritiferum, Onithochiton margaritiferum A. de Rochebrune, 1884 - (CHITONIDAE)
- margaritiferum, Amussium margaritiferum P. Dautzenberg & A.R.J.B. Bavay, 1912 - syn of: Propeamussium investigatoris (E.A. Smith, 1906) - (PECTINIDAE)
- margaritiferum, Parvamussium margaritiferum P. Dautzenberg & A.R.J.B. Bavay, 1912 - syn of: Propeamussium investigatoris (E.A. Smith, 1906) - (PROPEAMUSSIIDAE)
- margaritiferus, Margarites margaritiferus T.A. Okutani, 1964 - syn of: Solariella margaritifera (T.A. Okutani, 1964) - (MARGARITIDAE)
- margaritiferus, Mytilus margaritiferus C. Linnaeus, 1758 - syn of: Pinctada margaritifera (C. Linnaeus, 1798) - (MYTILIDAE)
- margaritiferus, Zeuxis margaritiferus R.W. Dunker, 1847 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritiferus costellifera, Nassarius margaritiferus costellifera A. Adams, 1853 - syn of: Nassarius margaritifer (R.W. Dunker, 1847) - (NASSARIIDAE)
- margaritiformis, Cirsonella margaritiformis (W.H. Dall, 1927) - (SKENEIDAE)
- margaritiformis, Circulus margaritiformis W.H. Dall, 1927 - syn of: Cirsonella margaritiformis (W.H. Dall, 1927) - (TORNIDAE)
- margaritiformis, Lydiphnis margaritiformis W.H. Dall, 1927 - syn of: Cirsonella margaritiformis (W.H. Dall, 1927) - (TORNIDAE)
- margaritina, Tellina margaritina (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- margaritina, Serratina margaritina J.B.P.A. Lamarck, 1818 - syn of: Tellina margaritina (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- Margaritiphaedusa, Subgenus Hemiphaedusa (Margaritiphaedusa) H. Nordsieck, 2001 (CLAUSILIIDAE)
- Margaritiphora, syn of: Genus Pinctada P.F. Rφding, 1798 (PTERIIDAE)
- margaritissimum, Calliostoma margaritissimum (T. Habe & T.A. Okutani, 1968) - (CALLIOSTOMATIDAE)
- Margaritites, syn of: Genus Pinctada P.F. Rφding, 1798 (PTERIIDAE)
- Margaritoceras, Genus Margaritoceras Cecioni & Flower, 1985 (EOTHINOCERATIDAE) (FOSSIL)
- margaritoides, Asteroceras margaritoides Spath, 1925 † - (ARIETITIDAE) (FOSSIL)
- margaritoides, Haminoea margaritoides J.T. Kuroda & T. Habe, 1971 - (HAMINOEIDAE)
- margaritoides, Cyclonema margaritoides (J.J.F. Whiteaves, 1897 †) - (PLATYCERATIDAE) (FOSSIL)
- margaritoides, Pleurotomaria margaritoides J.J.F. Whiteaves, 1897 † - syn of: Cyclonema margaritoides (J.J.F. Whiteaves, 1897 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- Margaritophora, syn of: Genus Pinctada P.F. Rφding, 1798 (PTERIIDAE)
- Margaritopsis, Subgenus Margarites (Margaritopsis) K.H.J. Thiele, 1906 (MARGARITIDAE)
- margaritosum, Eoprotrachyceras margaritosum (Mojsisovics, 1882 †) - (TRACHYCERATIDAE) (FOSSIL)
- Margaritropites, Genus Margaritropites Diener, 1916 (TROPITIDAE) (FOSSIL)
- margaritula, Bufonaria margaritula (G.P. Deshayes, 1832) - (BURSIDAE)
- margaritula, Bursa margaritula G.P. Deshayes, 1832 - syn of: Bufonaria margaritula (G.P. Deshayes, 1832) - (BURSIDAE)
- margaritula, Pseudamnicola margaritula (A. Fuchs, 1870 †) - (HYDROBIIDAE) (FOSSIL)
- margaritula, Granulina margaritula (P.P. Carpenter, 1857) - (MARGINELLIDAE)
- margaritula, Striarca margaritula (G.P. Deshayes, 1858 †) - (NOETIIDAE) (FOSSIL)
- margaritula, Crassispira margaritula (G.P. Deshayes, 1834 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- margaritula, Ranella margaritula G.P. Deshayes, 1832 - syn of: Bufonaria margaritula (G.P. Deshayes, 1832) - (RANELLIDAE)
- margaritula, Tiburnus margaritula (C.L.F. von Sandberger, 1859 †) - (SOLARIELLIDAE) (FOSSIL)
- margaritus, Solariella margaritus W.H. Dall, 1919 - (SOLARIELLIDAE)
- Margaron, syn of: Genus Unio L. Philipsson, 1788 (UNIONIDAE)
- Margartifera, syn of: Genus Margaritifera H.C.F. Schumacher, 1816 (MARGARITIFERIDAE)
- Margarya, Genus Margarya G. Nevill, 1877 (VIVIPARIDAE)
- margaryoides, Sinotaia margaryoides (T.N. Annandale, 1924) - (VIVIPARIDAE)
- margerini, Aporrhais margerini de Koninck, 1837 † - syn of: Aporrhais speciosa margerini (de Koninck, 1837 †) - (APORRHAIDAE) (FOSSIL)
- margerini, Aporrhais speciosa margerini (de Koninck, 1837 †) - (APORRHAIDAE) (FOSSIL)
- margidens, Argna margidens C.A. Westerlund, 1887 - syn of: Argna biplicata (A. Michaud, 1831) - (ARGNIDAE)
- margieriana, Candidula margieriana P. Fagot, 1883 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- margili, Melanopsis margili Robles, 1975 † - (MELANOPSIDAE) (FOSSIL)
- margiminia, Pusillina marginata margiminia F. Nordsieck, 1972 - (RISSOIDAE)
- marginalba, Pupa marginalba L. Pfeiffer, 1840 - syn of: Gastrocopta rupicola (T. Say, 1821) - (ACTEONIDAE)
- marginalba, Galeodea marginalba A. Yamamoto & K. Sakurai, 1977 - syn of: Galeodea bituminata (K. Martin, 1933) - (CASSIDAE)
- marginalba, Tenguella marginalba (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginalba, Purpura marginalba H.M.D. de Blainville, 1832 - syn of: Tenguella marginalba (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginalbum, Chondropoma marginalbum (J. Gundlach in L. Pfeiffer, 1859) - (POMATIIDAE)
- marginalbum guantanamense, Chondropoma marginalbum guantanamense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- marginalbum subguantanamense, Chondropoma marginalbum subguantanamense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- marginale, Schizostoma marginale K.E.I. von Eichwald, 1860 † - syn of: Mestoronema marginalis (K.E.I. von Eichwald, 1860 †) - (EUOMPHALIDAE) (FOSSIL)
- marginale, Meekoceras marginale (Arthaber, 1908 †) - (MEEKOCERATIDAE) (FOSSIL)
- marginalis, Cleionychia marginalis W.J. Raymond, 1905 † - (AMBONYCHIIDAE) (FOSSIL)
- marginalis, Architectonica marginalis G.P. Deshayes, 1863 † - (ARCHITECTONICIDAE) (FOSSIL)
- marginalis, Zemacies marginalis (W.B. Marshall, 1919 †) - (BORSONIIDAE) (FOSSIL)
- marginalis, Crepidula marginalis (W.J. Broderip, 1834) - (CALYPTRAEIDAE)
- marginalis, Erosaria marginalis (L.W. Dillwyn, 1827) - (CYPRAEIDAE)
- marginalis, Auricula marginalis J.P.S. Grateloup, 1828 † - syn of: Proplecotrema marginalis (J.P.S. Grateloup, 1828 †) - (ELLOBIIDAE) (FOSSIL)
- marginalis, Euomphalus marginalis Murchison, Verneuil & Keyserling, 1845 † - syn of: Mestoronema marginalis (K.E.I. von Eichwald, 1860 †) - (EUOMPHALIDAE) (FOSSIL)
- marginalis, Mestoronema marginalis (K.E.I. von Eichwald, 1860 †) - (LESUEURILLIDAE) (FOSSIL)
- marginalis, Lesueurilla marginalis E.F.R.K. Koken & J. Perner, 1925 † - syn of: Mestoronema marginalis (K.E.I. von Eichwald, 1860 †) - (LESUEURILLIDAE) (FOSSIL)
- marginalis, Proplecotrema marginalis (J.P.S. Grateloup, 1828 †) - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- marginalis, Cyrtoceras marginalis T.A. Conrad, 1843 † - syn of: Reedsoceras macrostomum (J.W. Hall, 1847 †) - (ONCOCERIDA (unassigned)) (FOSSIL)
- marginalis, Vishnuites marginalis Chao, 1959 † - syn of: Vishnuites pralambha Diener, 1897 † - (OPHICERATIDAE) (FOSSIL)
- marginalis, Megastomia marginalis (C.R. Laws, 1940 †) - (PYRAMIDELLIDAE) (FOSSIL)
- marginalis, Tanchiashanites marginalis J.K. Zhao, 1954 † - (TAINOCERATIDAE) (FOSSIL)
- marginalis, Tellina marginalis J. Lightfoot, 1786 - syn of: Tellina virgata C. Linnaeus, 1758 - (TELLINIDAE)
- marginalis, Lamellidens marginalis (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- marginalis melocellata, Erosaria marginalis melocellata F.Jr. Lorenz & V. Wiese, 1990 - (CYPRAEIDAE)
- marginalis obesa, Unio marginalis obesa S.C.T. Hanley & W. Theobald, 1876 - syn of: Lamellidens jenkinsianus (W.H. Benson, 1862) - (UNIONIDAE)
- marginalis pseudocellata, Erosaria marginalis pseudocellata (F.A. Schilder & M. Schilder, 1938) - (CYPRAEIDAE)
- marginalis quadriangula, Erosaria marginalis quadriangula L. Bozzetti, 2011 - (CYPRAEIDAE)
- marginalis sawaddyensis, Lamellidens marginalis sawaddyensis H.B. Preston, 1912 - syn of: Lamellidens generosus (A.A. Gould, 1847) - (UNIONIDAE)
- marginalis spiralis, Mestoronema marginalis spiralis (E.F.R.K. Koken & J. Perner, 1925 †) - (LESUEURILLIDAE) (FOSSIL)
- marginalis sublamellatus, Lamellidens marginalis sublamellatus H.B. Preston, 1912 - syn of: Lamellidens scutum (G.B. Sowerby, 1868) - (UNIONIDAE)
- marginalis zonata, Unio marginalis zonata S.C.T. Hanley & W. Theobald, 1876 - syn of: Lamellidens scutum (G.B. Sowerby, 1868) - (UNIONIDAE)
- marginans, Pagodulina austeniana marginans M. Klemm, 1939 - (ORCULIDAE)
- marginata, Achatinella marginata J.T. Gulick - syn of: Leptachatina marginata (J.T. Gulick, 1856) - (ACHATINELLIDAE)
- marginata, Achatinella marginata J.T. Gulick, 1856 - syn of: Leptachatina marginata (J.T. Gulick, 1856) - (ACHATINELLIDAE)
- marginata, Archachatina marginata (W.J. Swainson, 1821) - (ACHATINIDAE)
- marginata, Acteocina marginata T. Habe, 1971 - (ACTEOCINIDAE)
- marginata, Volvaria marginata Ant. Bivona-Bernardi, 1832 - syn of: Granulina marginata (Ant. Bivona-Bernardi, 1832) - (ACTEONIDAE)
- marginata, Leptachatina marginata (J.T. Gulick, 1856) - (AMASTRIDAE)
- marginata, Bythinia marginata A. Michaud, 1831 - syn of: Belgrandia marginata (A. Michaud, 1831) - (AMNICOLIDAE)
- marginata, Amalda marginata (J.B.P.A. Lamarck, 1811) - (ANCILLARIIDAE)
- marginata, Aplysia marginata H.M.D. de Blainville, 1823 - syn of: Aplysia punctata (G.L.C.F.D. Cuvier, 1803) - (APLYSIIDAE)
- marginata, Perissoptera marginata (Sowerby in Fitton, 1836 †) - (APORRHAIDAE) (FOSSIL)
- marginata, Architectonica marginata (G.P. Deshayes, 1832 ) - (ARCHITECTONICIDAE)
- marginata, Histiomena marginata (Ørsted in O.A.L. Mörch, 1859) - (ARMINIDAE)
- marginata, Assiminea marginata A. Leith, 1853 - (ASSIMINEIDAE)
- marginata, Assiminea marginata P.M.A. Morelet, 1853 - syn of: Assiminea brevicula (L. Pfeiffer, 1855) - (ASSIMINEIDAE)
- marginata, Cordieria marginata G.P. Deshayes, 1865 - (BORSONIIDAE)
- marginata, Aphanitoma marginata (Nordsieck, 1972) - (BORSONIIDAE)
- marginata, Aegista marginata (H.A. Pilsbry & Y. Hirase, 1903) - (BRADYBAENIDAE)
- marginata, Aspa marginata (J.F. Gmelin, 1791) - (BURSIDAE)
- marginata, Bufonaria marginata J.F. Gmelin, 1791 - syn of: Aspa marginata (J.F. Gmelin, 1791) - (BURSIDAE)
- marginata, Bursa marginata J.F. Gmelin, 1791 - syn of: Aspa marginata (J.F. Gmelin, 1791) - (BURSIDAE)
- marginata, Cadlina marginata F.M. MacFarland, 1905 - syn of: Cadlina luteomarginata B. McFarland, 1966 - (CADLINIDAE)
- marginata, Calliostoma marginata M.M. Schepman, 1909 - syn of: Fluxinella marginata (M.M. Schepman, 1909) - (CALLIOSTOMATIDAE)
- marginata, Fluxina marginata M.M. Schepman, 1909 - syn of: Fluxinella marginata (M.M. Schepman, 1909) - (CALLIOSTOMATIDAE)
- marginata, Obba marginata (O.F. Müller, 1774) - (CAMAENIDAE)
- marginata, Cavolinia marginata H.G. Bronn, 1962 † - (CAVOLINIIDAE) (FOSSIL)
- marginata, Mendax marginata (H.H. Suter, 1908) - (CERITHIOPSIDAE)
- marginata, Glossodoris marginata W.H. Pease, 1860 - syn of: Goniobranchus verrieri (J.C.H. Crosse, 1875) - (CHROMODORIDIDAE)
- marginata, Chromodoris marginata W.H. Pease, 1860 - syn of: Goniobranchus verrieri (J.C.H. Crosse, 1875) - (CHROMODORIDIDAE)
- marginata, Macedonica marginata (E.A. Rossmässler, 1835) - (CLAUSILIIDAE)
- marginata, Turricula marginata F.W. Hutton, 1885 - syn of: Microvoluta marginata (F.W. Hutton, 1885) - (CLAVATULIDAE)
- marginata, Collonia marginata (J.B.P.A. Lamarck, 1804 †) - (COLLONIIDAE) (FOSSIL)
- marginata, Vexillum marginata F.W. Hutton, 1885 - syn of: Microvoluta marginata (F.W. Hutton, 1885) - (COSTELLARIIDAE)
- marginata, Austromitra marginata H.H. Suter, 1908 - syn of: Austromitra rubiginosa (F.W. Hutton, 1873) - (COSTELLARIIDAE)
- marginata, Crassatella marginata J. Keep, 1887 - syn of: Neolepton salmoneum (P.P. Carpenter, 1864) - (CRASSATELLIDAE)
- marginata, Zoila marginata (J.S. Gaskoin, 1849) - (CYPRAEIDAE)
- marginata, Erosaria marginata G.S. Coen, 1949 - syn of: Erosaria erosa (C. Linnaeus, 1758) - (CYPRAEIDAE)
- marginata, Monetaria marginata E.A.H. von Kiesenwetter, 1872 - syn of: Monetaria moneta (C. Linnaeus, 1758) - (CYPRAEIDAE)
- marginata, Naticopsis marginata (A. Römer, 1843 †) - (DELPHINULOPSIDAE) (FOSSIL)
- marginata, Doris marginata G. Montagu, 1804 - syn of: Cadlina laevis (C. Linnaeus, 1767) - (DORIDIDAE)
- marginata, Doris marginata J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (DORIDIDAE)
- marginata, Doris marginata W.H. Pease, 1860 - syn of: Goniobranchus verrieri (J.C.H. Crosse, 1875) - (DORIDIDAE)
- marginata, Cirsope marginata (G.P. Deshayes, 1861 †) - (ELACHISINIDAE) (FOSSIL)
- marginata, Claviscala marginata (F.W. Hutton, 1885 †) - (EPITONIIDAE) (FOSSIL)
- marginata, Eulima marginata J.E. Tenison-Woods, 1879 - syn of: Melanella augur (G.F. Angas, 1865) - (EULIMIDAE)
- marginata, Melanella marginata J.E. Tenison-Woods, 1879 - syn of: Melanella augur (G.F. Angas, 1865) - (EULIMIDAE)
- marginata, Glaucus marginata O.W.H. Reinhardt & L.S.R. Bergh, 1864 - syn of: Glaucus marginatus (O.W.H. Reinhardt & L.S.R. Bergh, 1864) - (GLAUCIDAE)
- marginata, Goniodoris marginata E. Forbes, 1840 - syn of: Goniodoris nodosa (G. Montagu, 1808) - (GONIODORIDIDAE)
- marginata, Glyptotomaria marginata Batten, 1958 † - (GOSSELETINIDAE) (FOSSIL)
- marginata, Gymnodoris marginata (N.H. Odhner, 1917) - (GYMNODORIDIDAE)
- marginata, Caucasotachea atrolabiata marginata (A. Schmidt, 1865) - (HELICIDAE)
- marginata, Helicotoma marginata Ulrich & Scofield, 1897 † - (HELICOTOMIDAE) (FOSSIL)
- marginata, Belgrandia marginata (A. Michaud, 1831) - (HYDROBIIDAE)
- marginata, Pyrgula marginata (C.A. Westerlund, 1902) - (HYDROBIIDAE)
- marginata, Nematurella marginata C.A. Westerlund, 1902 - syn of: Pyrgula marginata (C.A. Westerlund, 1902) - (HYDROBIIDAE)
- marginata, Belgrandiella hohenackeri marginata (C.A. Westerlund, 1881) - (HYDROBIIDAE)
- marginata, Hyala marginata H.G. Bronn, 1964 † - syn of: Cavolinia marginata H.G. Bronn, 1962 † - (IRAVADIIDAE) (FOSSIL)
- marginata, Lehmannia marginata (O.F. Müller, 1774) - (LIMACIDAE)
- marginata, Granulina marginata (Ant. Bivona-Bernardi, 1832) - (MARGINELLIDAE)
- marginata, Stazzania marginata (O.G. Michelotti, 1847 †) - (MARGINELLIDAE) (FOSSIL)
- marginata, Mesoginella marginata C.F. Laseron, 1948 - syn of: Mesoginella turbinata (G.B. II Sowerby, 1846) - (MARGINELLIDAE)
- marginata, Melanopsis marginata A. Braun in Walchner, 1851 † - syn of: Melanopsis fritzei Thomä, 1845 † - (MELANOPSIDAE) (FOSSIL)
- marginata, Mitra marginata G.B. Sowerby, 1874 - syn of: Nebularia punctostriata A. Adams, 1855 - (MITRIDAE)
- marginata, Murchisonia angulata marginata Lotz, 1900 † - (MURCHISONIIDAE) (FOSSIL)
- marginata, Lepsiella marginata (G.P. Deshayes, 1839) - (MURICIDAE)
- marginata, Rapana marginata A. Valenciennes, 1846 - syn of: Rapana venosa (A. Valenciennes, 1846) - (MURICIDAE)
- marginata, Natica marginata A. Römer, 1843 † - syn of: Naticopsis marginata (A. Römer, 1843 †) - (NATICIDAE) (FOSSIL)
- marginata, Stohleria marginata J. Keep, 1887 - syn of: Neolepton salmoneum (P.P. Carpenter, 1864) - (NEOLEPTONIDAE)
- marginata, Neritina marginata J.B. Hombron & C.H. Jacquinot - syn of: Neritina taitensis (R.P. Lesson, 1831) - (NERITIDAE)
- marginata, Specula marginata H.H. Suter, 1908 - syn of: Mendax marginata (H.H. Suter, 1908) - (NEWTONIELLIDAE)
- marginata, Onchidella marginata (J.P.Y. Couthouy in A.A. Gould, 1852) - (ONCHIDIIDAE)
- marginata, Peronia marginata J.P.Y. Couthouy in A.A. Gould, 1852 - syn of: Onchidella marginata (J.P.Y. Couthouy in A.A. Gould, 1852) - (ONCHIDIIDAE)
- marginata, Margovula marginata (G.B. I Sowerby, 1828) - (OVULIDAE)
- marginata, Pseudosimnia marginata G.B. I Sowerby, 1828 - syn of: Margovula marginata (G.B. I Sowerby, 1828) - (OVULIDAE)
- marginata, Cyphoma marginata J.C. Chenu, 1859 - syn of: Cyphoma emarginatum (G.B. I Sowerby, 1830) - (OVULIDAE)
- marginata, Elysia marginata W.H. Pease, 1871 - syn of: Elysia ornata (W.J. Swainson, 1840) - (PLAKOBRANCHIDAE)
- marginata, Plicatula marginata T. Say, 1824 - syn of: Plicatula gibbosa J.B.P.A. Lamarck, 1801 - (PLICATULIDAE)
- marginata, Cyclostoma marginata T. Say, 1821 - syn of: Pupoides albilabris (C.B. Adams, 1841) - (POMATIIDAE)
- marginata, Pupilla marginata J.P.R. Draparnaud, 1801 - syn of: Pupilla muscorum (C. Linnaeus, 1758) - (PUPILLIDAE)
- marginata, Tortulosa marginata (L. Pfeiffer, 1853) - (PUPINIDAE)
- marginata, Levipyrgulina marginata C.R. Laws, 1941 † - (PYRAMIDELLIDAE) (FOSSIL)
- marginata, Odostomia marginata (C.B. Adams, 1852) - (PYRAMIDELLIDAE)
- marginata, Pusillina marginata (A. Michaud, 1830) - (RISSOIDAE)
- marginata, Fluxinella marginata (M.M. Schepman, 1909) - (SEGUENZIIDAE)
- marginata, Solariella marginata C.A. Récluz, 1842 - (SOLARIELLIDAE)
- marginata, Euhoploceras marginata (Buckman, 1892 †) - (SONNINIIDAE) (FOSSIL)
- marginata, Poiretia dilatata marginata (C.A. Westerlund, 1886) - (SPIRAXIDAE)
- marginata, Pterocera marginata A.V.M.D. D'Orbigny, 1843 † - syn of: Ceratosiphon marginatus (A.V.M.D. D'Orbigny, 1843 †) - (STROMBIDAE) (FOSSIL)
- marginata, Potamopyrgus marginata W.F. Petterd, 1889 - (TATEIDAE)
- marginata, Terebra marginata G.P. Deshayes, 1857 - syn of: Terebra armillata R.B. Hinds, 1844 - (TEREBRIDAE)
- marginata, Tonna marginata R.A. Philippi, 1845 - syn of: Tonna lischkeana (H.C. Küster, 1857) - (TONNIDAE)
- marginata, Trigonia marginata Damon, 1860 † - (TRIGONIIDAE) (FOSSIL)
- marginata, Subulophora marginata C.F. Laseron, 1958 - (TRIPHORIDAE)
- marginata, Hespererato marginata (O.A.L. Mörch, 1860) - (TRIVIIDAE)
- marginata, Thalotia marginata J.E. Tenison-Woods, 1880 - syn of: Calliostoma fragum (R.A. Philippi, 1848) - (TROCHIDAE)
- marginata, Gibbula marginata Š. Brusina, 1866 - syn of: Gibbula divaricata (C. Linnaeus, 1758) - (TROCHIDAE)
- marginata, Truncatella marginata H.C. Küster, 1855 - (TRUNCATELLIDAE)
- marginata, Alasmidonta marginata T. Say, 1818 - (UNIONIDAE)
- marginata, Alasmodon marginata J.E. De Kay, 1843 - syn of: Alasmidonta varicosa (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- marginata, Anodonta marginata T. Say, 1817 - syn of: Anodonta cataracta T. Say, 1817 - (UNIONIDAE)
- marginata, Valvata marginata A. Michaud, 1855 † - (VALVATIDAE) (FOSSIL)
- marginata, Lamellaria marginata L.S.R. Bergh, 1898 - syn of: Lamellaria perspicua (C. Linnaeus, 1758) - (VELUTINIDAE)
- marginata, Timoclea marginata (R. Hoernes, 1852 †) - (VENERIDAE) (FOSSIL)
- marginata, Sarasinula marginata (C.G. Semper, 1885) - (VERONICELLIDAE)
- marginata, Paludina marginata A. Michaud, 1831 - syn of: Belgrandia marginata (A. Michaud, 1831) - (VIVIPARIDAE)
- marginata, Voluta marginata I. von Born, 1778 - syn of: Prunum marginatum (I. von Born, 1778) - (VOLUTIDAE)
- marginata, Microvoluta marginata (F.W. Hutton, 1885) - (VOLUTOMITRIDAE)
- marginata albanyensis, Zoila marginata albanyensis L. Raybaudi Massilia, 1985 - (CYPRAEIDAE)
- marginata albanyensis nimbosa, Zoila marginata albanyensis nimbosa L. Raybaudi Massilia, 1994 - (CYPRAEIDAE)
- marginata balcanica, Macedonica marginata balcanica A.J. Wagner, 1928 - (CLAUSILIIDAE)
- marginata bataviensis hypermarginata, Zoila marginata bataviensis hypermarginata L. Raybaudi Massilia, 1993 - (CYPRAEIDAE)
- marginata bataviensis lutea, Zoila marginata bataviensis lutea L. Raybaudi Massilia, 1993 - (CYPRAEIDAE)
- marginata bataviensis suprema, Zoila marginata bataviensis suprema F.Jr. Lorenz, 2001 - (CYPRAEIDAE)
- marginata carpatica, Macedonica marginata carpatica A.J. Wagner, 1928 - (CLAUSILIIDAE)
- marginata clenchi, Archachatina marginata clenchi J.C. Bequaert, 1950 - (ACHATINIDAE)
- marginata consueta, Zoila marginata consueta G. Biraghi, 1993 - (CYPRAEIDAE)
- marginata dominans, Euhoploceras marginata dominans (Buckman, 1892 †) - (SONNINIIDAE) (FOSSIL)
- marginata eduardi, Archachatina marginata eduardi H.A. Pilsbry, 1909 - (ACHATINIDAE)
- marginata egregia, Archachatina marginata egregia (P. Dautzenberg, 1921) - (ACHATINIDAE)
- marginata egregiella, Archachatina marginata egregiella J.C. Bequaert & W.J. Clench, 1936 - (ACHATINIDAE)
- marginata fourneaui, Archachatina marginata fourneaui J. Germain, 1908 - syn of: Archachatina marginata eduardi H.A. Pilsbry, 1909 - (ACHATINIDAE)
- marginata frivaldskyana, Macedonica marginata frivaldskyana (E.A. Rossmässler, 1839) - (CLAUSILIIDAE)
- marginata gibbosa, Bythinia marginata gibbosa A. Moquin-Tandon, 1856 - syn of: Bythinella gibbosa (A. Moquin-Tandon, 1856) - (AMNICOLIDAE)
- marginata grevillei, Archachatina marginata grevillei (L. Pfeiffer, 1860) - (ACHATINIDAE)
- marginata grossa, Macedonica marginata grossa (E.A. Rossmässler, 1835) - (CLAUSILIIDAE)
- marginata icterica, Archachatina marginata icterica (J.C. Bequaert & W.J. Clench, 1936) - (ACHATINIDAE)
- marginata ketyana, Cypraea marginata ketyana L. Raybaudi Massilia, 1978 - syn of: Zoila ketyana (L. Raybaudi Massilia, 1978) - (CYPRAEIDAE)
- marginata ketyana intermedians, Zoila marginata ketyana intermedians F. Lobetti Bodoni, 1986 - (CYPRAEIDAE)
- marginata major, Macedonica marginata major (J. Urbanski, 1964) - (CLAUSILIIDAE)
- marginata margiminia, Pusillina marginata margiminia F. Nordsieck, 1972 - (RISSOIDAE)
- marginata meyeri, Obba marginata meyeri O.F. von Möllendorff, 1896 - (CAMAENIDAE)
- marginata minor, Macedonica marginata minor (E.A. Rossmässler, 1835) - (CLAUSILIIDAE)
- marginata orientalis, Zoila marginata orientalis G. Raybaudi Massilia, 1985 - syn of: Zoila orientalis G. Raybaudi Massilia, 1985 - (CYPRAEIDAE)
- marginata ovum, Archachatina marginata ovum (L. Pfeiffer, 1858) - (ACHATINIDAE)
- marginata raybaudii, Zoila marginata raybaudii F.Jr. Lorenz, 1992 - (CYPRAEIDAE)
- marginata saotomensis, Archachatina marginata saotomensis unknown - (ACHATINIDAE)
- marginata subsuturalis, Archachatina marginata subsuturalis H.A. Pilsbry, 1904 - (ACHATINIDAE)
- marginata suturalis, Archachatina marginata suturalis (R.A. Philippi, 1849) - (ACHATINIDAE)
- marginata teodorae, Macedonica marginata teodorae A. Irikov, 2006 - (CLAUSILIIDAE)
- marginata teres, Truncatella marginata teres L. Pfeiffer, 1857 - (TRUNCATELLIDAE)
- marginatiformis, Euomphalus marginatiformis Licharev, 1967 † - (EUOMPHALIDAE) (FOSSIL)
- marginatoides, Caracolus marginella marginatoides (A.V.M.D. D'Orbigny, 1841) - (PLEURODONTIDAE)
- marginatra, Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatra, Semiricinula marginatra H.M.D. de Blainville, 1832 - syn of: Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatra, Drupa marginatra H.M.D. de Blainville, 1832 - syn of: Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatra, Morula marginatra H.M.D. de Blainville, 1832 - syn of: Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatra, Purpura marginatra H.M.D. de Blainville, 1832 - syn of: Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatrum, Drupa marginatrum H.M.D. de Blainville, 1832 - syn of: Neothais marginatra (H.M.D. de Blainville, 1832) - (MURICIDAE)
- marginatum, Buccinum marginatum J.F. Gmelin, 1791 - syn of: Aspa marginata (J.F. Gmelin, 1791) - (BUCCINIDAE)
- marginatum, Caecum marginatum L. de Folin, 1869 - (CAECIDAE)
- marginatum, Keilostoma marginatum (J.B.P.A. Lamarck, 1804 †) - (DIASTOMATIDAE) (FOSSIL)
- marginatum, Prunum marginatum (I. von Born, 1778) - (MARGINELLIDAE)
- marginatum, Ovula marginatum G.B. I Sowerby, 1828 - syn of: Margovula marginata (G.B. I Sowerby, 1828) - (OVULIDAE)
- marginatum, Gyrineum marginatum (J.F. Gmelin, 1790 †) - (RANELLIDAE) (FOSSIL)
- marginatum, Dolium marginatum T. Iwakawa, 1919 - syn of: Tonna dolium (C. Linnaeus, 1758) - (TONNIDAE)
- marginatum, Tonna marginatum R.A. Philippi, 1845 - syn of: Tonna lischkeana (H.C. Küster, 1857) - (TONNIDAE)
- marginatus, Ammonites marginatus J. Phillips, 1829 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- marginatus, Ceratosiphon marginatus (A.V.M.D. D'Orbigny, 1843 †) - (APORRHAIDAE) (FOSSIL)
- marginatus, Chiton marginatus T. Pennant, 1777 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (CHITONIDAE)
- marginatus, Cryptoconus marginatus (J.B.P.A. Lamarck, 1804 †) - (CONIDAE) (FOSSIL)
- marginatus, Conus marginatus J. de C. Sowerby, 1839 † - syn of: Cryptoconus marginatus (J.B.P.A. Lamarck, 1804 †) - (CONIDAE) (FOSSIL)
- marginatus, Conorbis marginatus J.B.P.A. Lamarck, 1804 † - syn of: Cryptoconus marginatus (J.B.P.A. Lamarck, 1804 †) - (CONORBIDAE) (FOSSIL)
- marginatus, Amphiscapha marginatus (d'Eichwald, 1860 †) - (EUOMPHALIDAE) (FOSSIL)
- marginatus, Glaucus marginatus (O.W.H. Reinhardt & L.S.R. Bergh, 1864) - (GLAUCIDAE)
- marginatus, Hexabranchus marginatus J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
- marginatus, Hexabranchus marginatus C.N.E. Eliot, 1905 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
- marginatus, Hexabranchus marginatus J.J. Risbec, 1929 - syn of: Hexabranchus sanguineus (W.P.E.S. Rüppell & F.S. Leuckart, 1830) - (HEXABRANCHIDAE)
- marginatus, Margarites marginatus W.H. Dall, 1919 - syn of: Margarites olivaceus marginatus W.H. Dall, 1919 - (MARGARITIDAE)
- marginatus, Margarites olivaceus marginatus W.H. Dall, 1919 - (MARGARITIDAE)
- marginatus, Tandonia marginatus J.P.R. Draparnaud, 1805 - syn of: Tandonia rustica (P.A. Millet, 1843) - (MILACIDAE)
- marginatus, Nelegerocornus marginatus Meshkova, 1974 † - (NELEGEROCORNIDAE) (FOSSIL)
- marginatus, Amphioctopus marginatus (Iw. Taki, 1964) - (OCTOPODIDAE)
- marginatus, Proavites marginatus Arthaber, 1896 † - syn of: Proavites hueffeli Arthaber, 1896 † - (PINACOCERATIDAE) (FOSSIL)
- marginatus, Planorbis marginatus J.P.R. Draparnaud, 1805 - syn of: Planorbis planorbis (C. Linnaeus, 1758) - (PLANORBIDAE)
- marginatus, Phrixgnathus marginatus F.W. Hutton, 1883 - (PUNCTIDAE)
- marginatus, Pupoides marginatus T. Say - (PUPILLIDAE)
- marginatus, Pupoides marginatus H.A. Pilsbry & E.G. Vanatta, 1900 - syn of: Pupoides albilabris (C.B. Adams, 1841) - (PUPILLIDAE)
- marginatus, Solen marginatus R. Pulteney, 1799 - (SOLENIDAE)
- marginatus, Solen marginatus F.C.L. Koch, 1843 - syn of: Solen capensis P. Fischer, 1881 - (SOLENIDAE)
- marginatus, Margistrombus marginatus (C. Linnaeus, 1758) - (STROMBIDAE)
- marginatus, Strombus marginatus C. Linnaeus, 1758 - syn of: Margistrombus marginatus (C. Linnaeus, 1758) - (STROMBIDAE)
- marginatus, Turbo marginatus Zieten, 1832 † - syn of: Amberleya subimbricata (A.V.M.D. D'Orbigny, 1850 †) - (TURBINIDAE) (FOSSIL)
- marginatus, Omalaxis disjunctus marginatus G.P. Deshayes, 1832 † - (TURRITELLIDAE) (FOSSIL)
- marginatus adumbrata, Ischnochiton marginatus adumbrata P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus aequipartitus, Cryptoconus marginatus aequipartitus (A.E.M. Cossmann, 1889 †) - (CONIDAE) (FOSSIL)
- marginatus aequipartitus, Conus marginatus aequipartitus A.E.M. Cossmann, 1889 † - syn of: Cryptoconus marginatus aequipartitus (A.E.M. Cossmann, 1889 †) - (CONIDAE) (FOSSIL)
- marginatus albocarinata, Ischnochiton marginatus albocarinata P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus bistriatus, Cryptoconus marginatus bistriatus (G.P. Deshayes, 1834 †) - (CONIDAE) (FOSSIL)
- marginatus bistriatus, Conus marginatus bistriatus G.P. Deshayes, 1834 † - syn of: Cryptoconus marginatus bistriatus (G.P. Deshayes, 1834 †) - (CONIDAE) (FOSSIL)
- marginatus dubius, Planorbis marginatus dubius J.D.W. Hartmann, 1821 - syn of: Planorbis dubius J.D.W. Hartmann, 1821 - (PLANORBIDAE)
- marginatus major, Solen marginatus major M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1895 - syn of: Solen marginatus R. Pulteney, 1799 - (SOLENIDAE)
- marginatus miniata, Ischnochiton marginatus miniata P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus nigrescens, Ischnochiton marginatus nigrescens P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus nitidulus, Pupoides marginatus nitidulus (L. Pfeiffer, 1839) - (PUPILLIDAE)
- marginatus robustus, Margistrombus marginatus robustus G.B. III Sowerby, 1874 - syn of: Margistrombus robustus (G.B. III Sowerby, 1874) - (STROMBIDAE)
- marginatus rubrocarinata, Ischnochiton marginatus rubrocarinata P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus septimus, Margistrombus marginatus septimus P.L. Duclos, 1844 - syn of: Margistrombus septimus (P.L. Duclos, 1844) - (STROMBIDAE)
- marginatus sowerbyorum, Margistrombus marginatus sowerbyorum (J.S. Visser & L.M. Man in't Veld, 2005) - (STROMBIDAE)
- marginatus straminea, Ischnochiton marginatus straminea P. Dautzenberg & P. Durouchoux, 1906 - syn of: Lepidochitona cinereus (C. Linnaeus, 1767) - (ISCHNOCHITONIDAE)
- marginatus succinctus, Margistrombus marginatus succinctus C. Linnaeus, 1767 - syn of: Margistrombus succinctus (C. Linnaeus, 1767) - (STROMBIDAE)
- Marginella, Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- marginella, Caracolus marginella (J.F. Gmelin, 1791) - (PLEURODONTIDAE)
- marginella albolabris, Caracolus marginella albolabris H.A. Pilsbry, 1894 - (PLEURODONTIDAE)
- marginella arangiana, Caracolus marginella arangiana (F. Poey, 1854) - (PLEURODONTIDAE)
- marginella blanesi, Caracolus marginella blanesi W.J. Clench & C.G. Aguayo, 1951 - (PLEURODONTIDAE)
- marginella conicus, Caracolus marginella conicus (L. Pfeiffer) - (PLEURODONTIDAE)
- marginella coutini, Caracolus marginella coutini W.J. Clench & C.G. Aguayo, 1951 - (PLEURODONTIDAE)
- marginella cupulatus, Caracolus marginella cupulatus (A.E.J. Férussac) - (PLEURODONTIDAE)
- marginella exhuberans, Caracolus marginella exhuberans W.J. Clench & C.G. Aguayo, 1951 - syn of: Caracolus marginella exuberans (W.J. Clench & C.G. Aguayo, 1951) - (PLEURODONTIDAE)
- marginella exuberans, Caracolus marginella exuberans (W.J. Clench & C.G. Aguayo, 1951) - (PLEURODONTIDAE)
- marginella flavus, Caracolus marginella flavus H.A. Pilsbry - (PLEURODONTIDAE)
- marginella goodrichi, Caracolus marginella goodrichi H.F. Ramsden - (PLEURODONTIDAE)
- marginella gutierrezi, Caracolus marginella gutierrezi (F. Poey, 1854) - (PLEURODONTIDAE)
- marginella holguinensis, Caracolus marginella holguinensis W.J. Clench - (PLEURODONTIDAE)
- marginella jactatus, Caracolus marginella jactatus (J. Gundlach in L. Pfeiffer, 1858) - (PLEURODONTIDAE)
- marginella marginatoides, Caracolus marginella marginatoides (A.V.M.D. D'Orbigny, 1841) - (PLEURODONTIDAE)
- marginella marginelloides, Caracolus marginella marginelloides (A.V.M.D. D'Orbigny, 1842) - (PLEURODONTIDAE)
- marginella mina, Caracolus marginella mina (L. Pfeiffer, 1852) - (PLEURODONTIDAE)
- marginella pazensis, Caracolus marginella pazensis (F. Poey, 1854) - (PLEURODONTIDAE)
- marginella rostrata, Caracolus marginella rostrata L. Pfeiffer, 1847 - (PLEURODONTIDAE)
- marginella schwartziana, Caracolus marginella schwartziana (L. Pfeiffer, 1864) - (PLEURODONTIDAE)
- marginella semiaperta, Caracolus marginella semiaperta E.C. Von Martens - (PLEURODONTIDAE)
- marginella transitoria, Caracolus marginella transitoria (L. Pfeiffer, 1858) - (PLEURODONTIDAE)
- marginella turgidas, Caracolus marginella turgidas W.J. Clench & C.G. Aguayo, 1951 - (PLEURODONTIDAE)
- marginella welchi, Caracolus marginella welchi H.A. Pilsbry, 1929 - (PLEURODONTIDAE)
- Marginellana, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- Marginellarius, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- MARGINELLIDAE Fleming, 1828 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-NEOGASTROPODA [Order]-MURICOIDEA [Superfamily])
- Marginellini, syn of: Genus Hyalina H.C.F. Schumacher, 1817 (MARGINELLIDAE)
- marginelloides, Eucithara marginelloides (L.A. Reeve, 1846) - (MANGELIIDAE)
- marginelloides, Olivella marginelloides G. Paulmier, 2007 - (OLIVELLIDAE)
- marginelloides, Caracolus marginella marginelloides (A.V.M.D. D'Orbigny, 1842) - (PLEURODONTIDAE)
- marginelloideum, Pachybathron marginelloideum J.S. Gaskoin, 1853 - syn of: Pachybathron cypraeoides (C.B. Adams, 1845) - (CYSTISCIDAE)
- Marginellona, Genus Marginellona E.C. Von Martens, 1904 (MARGINELLIDAE)
- Marginellopsis, syn of: Genus Pugnus C. Hedley, 1896 (MARGINELLIDAE)
- Marginellus, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- marginenodosa, Pleurotomaria marginenodosa Münster, 1841 † - syn of: Fusus nodosocarinatus Münster, 1841 † - (PLEUROTOMARIIDAE) (FOSSIL)
- marginenodosa, Turritella marginenodosa Münster, 1841 † - syn of: Protorcula subpunctata (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- marginenodoso, Tectus marginenodoso Böhm, 1895 † - syn of: Kittlitrochus marginenodosus Böhm, 1895 † - (TEGULIDAE) (FOSSIL)
- marginenodosus, Kittlitrochus marginenodosus Böhm, 1895 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- margineplicata, Limea margineplicata Klipstein, 1843 † - (LIMIDAE) (FOSSIL)
- Margineulima, Genus Margineulima A.E.M. Cossmann, 1888 (EULIMIDAE)
- marginidentata, Ostrea marginidentata Wood, 1861 † - (OSTREIDAE) (FOSSIL)
- Marginilla, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- marginlatus, Dermatobranchus marginlatus G.Y. Lin, 1981 - (ARMINIDAE)
- Marginocypraea, syn of: Genus Pseudocypraea F.A. Schilder, 1927 (PEDICULARIIDAE)
- Marginocystiscus, Genus Marginocystiscus Landau, da Silva & Heitz, 2016 (CYSTISCIDAE) (FOSSIL)
- marginodentata, Afranodontia marginodentata O.S. Adegoke, 1977 † - (LUCINIDAE) (FOSSIL)
- Marginodostomia, Genus Marginodostomia S. Nomura, 1936 (PYRAMIDELLIDAE)
- marginostoma, Opalia plicata marginostoma A.A. Baudon, 1856 † - (EPITONIIDAE) (FOSSIL)
- marginulata, Nassa marginulata L.A. Reeve, 1853 - syn of: Nassarius livescens (R.A. Philippi, 1849) - (NASSARIIDAE)
- marginulata, Solariella marginulata (R.A. Philippi, 1844 †) - (SOLARIELLIDAE) (FOSSIL)
- marginulatum, Buccinum marginulatum J.B.P.A. Lamarck, 1822 - syn of: Tritia reticulata (C. Linnaeus, 1758) - (BUCCINIDAE)
- Margistrombus, Genus Margistrombus K. Bandel, 2007 (STROMBIDAE)
- margoi, Planorbarius margoi (Lörenthey, 1894 †) - (PLANORBIDAE) (FOSSIL)
- Margostrea, Genus Margostrea Vialov, 1936 (OSTREIDAE) (FOSSIL)
- margostriata, Parvedentulina margostriata K.C. Emberton & T.A. Pearce, 2000 - (STREPTAXIDAE)
- margotae, Persicula margotae R. Le Béon, 2015 - (CYSTISCIDAE)
- Margovula, Genus Margovula T. Iredale, 1935 (OVULIDAE)
- margritae, Bythinella margritae P. Glöer & D.G. Georgiev, 2011 - (BYTHINELLIDAE)
- margritae, Rupestrella rupestris margritae J. Beckmann, 2002 - (CHONDRINIDAE)
- margritae, Palacanthilhiopsis margritae H.D. Boeters & G. Falkner, 2003 - (HYDROBIIDAE)
- marguerita, Aclis marguerita (P. Bartsch, 1947) - (ACLIDIDAE)
- margueritae, Onithochiton margueritae P. Kaas, R.A. Van Belle & H.L. Strack, 2006 - (CHITONIDAE)
- marhoumensis, Subanarcestes marhoumensis Göddertz, 1987 † - (SOBOLEWIIDAE) (FOSSIL)
- maria, Eulima maria A. Adams, 1861 - syn of: Hypermastus casta (A. Adams, 1861) - (EULIMIDAE)
- maria, Pseudorhaphitoma maria K.H.J. Thiele, 1925 - syn of: Pseudorhaphitoma ichthys (J.C. Melvill, 1910) - (MANGELIIDAE)
- mariaalejandrae, Rhodea mariaalejandrae J. Grego, J. Steffek & A.P. Infante, 2007 - (SUBULINIDAE)
- Mariacassia, syn of: Genus Echinophoria F. Sacco, 1890 (CASSIDAE)
- Mariacassis, syn of: Genus Echinophoria F. Sacco, 1890 (CASSIDAE)
- Mariacolpus, Genus Mariacolpus Petuch , 1988 (TURRITELLIDAE) (FOSSIL)
- mariacristinae, Bolma baccata mariacristinae B.M. Landau, R. Marquet & Grigis, 2003 † - (TURBINIDAE) (FOSSIL)
- mariadelmarae, Phidiana mariadelmarae F.J. García & J.S. Troncoso, 1999 - (FACELINIDAE)
- Mariadrillia, Genus Mariadrillia Petuch , 1988 (TURRIDAE) (FOSSIL)
- mariae, Notoplax mariae (W.H. Webster, 1907) - (ACANTHOCHITONIDAE)
- mariae, Acteocina mariae J.E. Tenison-Woods, 1876 - (ACTEOCINIDAE)
- mariae, Acteon mariae A. Adams, 1855 - (ACTEONIDAE)
- mariae, Hesperarion mariae R.M. Branson, 1991 - (ARIOLIMACIDAE)
- mariae, Plectostylus mariae J. Brookes, 1936 - (BOTHRIEMBRYONTIDAE)
- mariae, Eosiphonalia mariae (Melleville, 1843 †) - (BUCCINIDAE) (FOSSIL)
- mariae, Buccinulum mariae A.W.B. Powell, 1940 - (BUCCINIDAE)
- mariae, Rabdotus alternatus mariae J.A. Albers, 1850 - (BULIMULIDAE)
- mariae, Caecum mariae L. de Folin, 1881 - syn of: Meioceras cornucopiae P.P. Carpenter, 1859 - (CAECIDAE)
- mariae, Calliostoma mariae G.T. Poppe, S.P. Tagaro & H. Dekker, 2006 - (CALLIOSTOMATIDAE)
- mariae, Amphidromus mariae Thach & F. Huber, 2017 - (CAMAENIDAE)
- mariae, Quenstedtoceras mariae (A.V.M.D. D'Orbigny, 1842 †) - (CARDIOCERATIDAE) (FOSSIL)
- mariae, Strophiops mariae C.J. Maynard & W.F. Clapp, 1920 - (CERIONIDAE)
- mariae, Herpetopoma mariae H.J. Finlay, 1930 - (CHILODONTIDAE)
- mariae, Lucilina mariae (P. Kaas, R.A. Van Belle & H.L. Strack, 2006) - (CHITONIDAE)
- mariae, Alopia mariae R. Kimakowicz, 1931 - (CLAUSILIIDAE)
- mariae, Serrulina mariae L. Németh & M. Szekeres, 1995 - (CLAUSILIIDAE)
- mariae, Incania mariae A. Zilch, 1954 - (CLAUSILIIDAE)
- mariae, Medora almissana mariae H. Nordsieck, 1970 - (CLAUSILIIDAE)
- mariae, Alopia subcosticollis mariae R. von Kimakowicz, 1931 - (CLAUSILIIDAE)
- mariae, Tryonia mariae (J.P.E. Morrison, 1945) - (COCHLIOPIDAE)
- mariae, Macrozafra mariae A.W.B. Powell, 1940 - (COLUMBELLIDAE)
- mariae, Chelyconus mariae Hoernes & Auinger, 1879 † - (CONIDAE) (FOSSIL)
- mariae, Flexiclymenia mariae Czarnocki, 1989 † - syn of: Protactoclymenia mariae (Czarnocki, 1989 †) - (CYMACLYMENIIDAE) (FOSSIL)
- mariae, Annepona mariae (F.A. Schilder, 1927) - (CYPRAEIDAE)
- mariae, Cypraea mariae F.A. Schilder, 1927 - syn of: Annepona mariae (F.A. Schilder, 1927) - (CYPRAEIDAE)
- mariae, Pustularia mariae F.A. Schilder, 1927 - syn of: Annepona mariae (F.A. Schilder, 1927) - (CYPRAEIDAE)
- mariae, Lyncina camelopardalis mariae F.A. Schilder, 1927 - (CYPRAEIDAE)
- mariae, Protactoclymenia mariae (Czarnocki, 1989 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- mariae, Intelcystiscus mariae J. Espinosa & J.A. Ortea, 2014 - (CYSTISCIDAE)
- mariae, Palaina mariae (J.C.H. Crosse, 1867) - (DIPLOMMATINIDAE)
- mariae, Discohelix mariae C. Gemmellaro, 1911 † - (DISCOHELICIDAE) (FOSSIL)
- mariae, Carychium mariae M. Paulucci, 1878 - (ELLOBIIDAE)
- mariae, Embletonia mariae O. Meyer & K.A. Möbius, 1865 - syn of: Calliopaea bellula A.V.M.D. D'Orbigny, 1837 - (EMBLETONIIDAE)
- mariae, Anticonulus mariae (A.V.M.D. D'Orbigny, 1853 †) - (EPULOTROCHIDAE) (FOSSIL)
- mariae, Poleumita discors mariae Reed ex Salter MS † - (EUOMPHALIDAE) (FOSSIL)
- mariae, Fustiaria mariae V. Scarabino, 2008 - (FUSTIARIIDAE)
- mariae, Haliotis mariae W. Wood, 1828 - (HALIOTIDAE)
- mariae, Helix mariae J.C. Cox, 1864 - syn of: Ventopelita leucocheilus (J.C. Cox, 1868) - (HELICIDAE)
- mariae, Iberus gualtieranus mariae (C. Cobos, 1979) - (HELICIDAE)
- mariae, Xerotricha mariae (L. Gasull, 1974) - (HYGROMIIDAE)
- mariae, Haploplax mariae (J.N. Milne, 1958) - (ISCHNOCHITONIDAE)
- mariae, Stiliger mariae O. Meyer & K.A. Möbius, 1865 - syn of: Calliopaea bellula A.V.M.D. D'Orbigny, 1837 - (LIMAPONTIIDAE)
- mariae, Laevilitorina mariae (J.E. Tenison-Woods, 1876) - (LITTORINIDAE)
- mariae, Mactra mariae A. Adams, 1856 - syn of: Oxyperas elongata (J.R.C. Quoy & J.P. Gaimard, 1835) - (MACTRIDAE)
- mariae, Thaumastus melanocheilus mariae (J.T.L. McGinty, 1939) - (MEGASPIRIDAE)
- mariae, Combemorelites mariae Gayte, 1984 † - syn of: Adiakritobelus robustus (Duval-Jouve, 1841 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- mariae, Scabricola mariae (A. Adams, 1853) - (MITRIDAE)
- mariae, Mitra mariae A. Adams, 1853 - syn of: Scabricola mariae (A. Adams, 1853) - (MITRIDAE)
- mariae, Murexsul mariae (H.J. Finlay, 1930) - (MURICIDAE)
- mariae, Thaisella mariae (F. Lange de Morretes, 1954) - (MURICIDAE)
- mariae, Thais mariae F. Lange de Morretes, 1954 - syn of: Thaisella mariae (F. Lange de Morretes, 1954) - (MURICIDAE)
- mariae, Neritina mariae Handmann, 1887 † - (NERITIDAE) (FOSSIL)
- mariae, Nuculana mariae d'Orbigny, 1844 † - (NUCULANIDAE) (FOSSIL)
- mariae, Nucula mariae F. Nolf, 2005 - (NUCULIDAE)
- mariae, Oreohelix yavapai mariae P. Bartsch, 1916 - (OREOHELICIDAE)
- mariae, Liguus fasciatus mariae W.J. Clench, 1936 - (ORTHALICIDAE)
- mariae, Dentiovula mariae (F.A. Schilder, 1941) - (OVULIDAE)
- mariae, Brotia mariae F. Köhler, 2008 - (PACHYCHILIDAE)
- mariae, Towaipecten mariae (Finlay, 1927 †) - (PECTINIDAE) (FOSSIL)
- mariae, Chlamys mariae J.E. Tenison-Woods, 1876 - syn of: Notochlamys hexactes (F. Péron in J.B.P.A. Lamarck, 1819) - (PECTINIDAE)
- mariae, Anisus mariae (A. Michaud, 1862 †) - (PLANORBIDAE) (FOSSIL)
- mariae, Laoma mariae (J.E. Gray, 1843) - (PUNCTIDAE)
- mariae, Ividella mariae (P. Bartsch, 1928) - (PYRAMIDELLIDAE)
- mariae, Turbonilla mariae J.E. Tenison-Woods, 1875 - (PYRAMIDELLIDAE)
- mariae, Alvania mariae (A.V.M.D. D'Orbigny, 1852 †) - (RISSOIDAE) (FOSSIL)
- mariae, Fossarulus mariae P.S. Pavlovic, 1935 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- mariae, Opeas mariae (F.P. Jousseaume) - (SUBULINIDAE)
- mariae, Tellina mariae J.E. Tenison-Woods, 1876 - syn of: Tellina margaritina (J.B.P.A. Lamarck, 1818) - (TELLINIDAE)
- mariae, Pervicacia mariae A.W.B. Powell, 1940 - syn of: Euterebra tristis (G.P. Deshayes, 1859) - (TEREBRIDAE)
- mariae, Lydiphnis mariae (F.C. Baker, G.D. Hanna & A.M. Strong, 1938) - (TORNIDAE)
- mariae, Oestophora mariae A. Ruiz, J. Arrébola & A. Puente, 2009 - (TRISSEXODONTIDAE)
- mariae, Phorcus mariae J. Templado & E. Rolán, 2012 - (TROCHIDAE)
- mariae, Trochus mariae A.V.M.D. D'Orbigny, 1853 † - syn of: Anticonulus mariae (A.V.M.D. D'Orbigny, 1853 †) - (TROCHIDAE) (FOSSIL)
- mariae, Coluzea mariae A.W.B. Powell, 1952 - (TURBINELLIDAE)
- mariae, Unio mariae Pacome, 1889 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- mariae, Oligostylus mariae (P. Bartsch, 1947) - (UROCOPTIDAE)
- mariae, Haplocion mariae P. Bartsch, 1942 - (UROCOPTIDAE)
- mariae, Lirophora mariae (A.V.M.D. D'Orbigny, 1846) - (VENERIDAE)
- mariae, Venus mariae D'Orbigny, 1846 - syn of: Lirophora mariae (A.V.M.D. D'Orbigny, 1846) - (VENERIDAE)
- mariae, Athleta mariae Briart & Cornet, 1887 † - (VOLUTIDAE) (FOSSIL)
- mariae aupouria, Laoma mariae aupouria R.A. Cumber, 1967 - (PUNCTIDAE)
- mariae beeensis, Littorina mariae beeensis M. Smith in V. Fretter & A. Graham, 1980 - syn of: Littorina fabalis (W. Turton, 1825) - (LITTORINIDAE)
- mariae coronata, Alopia mariae coronata R. Kimakowicz, 1943 - (CLAUSILIIDAE)
- mariae dentata, Haliotis mariae dentata I.H. Jonas, 1843 - (HALIOTIDAE)
- mariae haurakiensis, Notoplax mariae haurakiensis E.A. Ashby, 1926 - (ACANTHOCHITONIDAE)
- mariae hildegardae, Alopia mariae hildegardae R. Kimakowicz, 1931 - (CLAUSILIIDAE)
- mariae soosi, Alopia mariae soosi R.A.M. Brandt, 1961 - (CLAUSILIIDAE)
- mariae suluensis, Annepona mariae suluensis F.Jr. Lorenz & A. Hubert, 1993 - (CYPRAEIDAE)
- mariaelisabethae, Zonaria mariaelisabethae L. Dolin, 1991 † - (CYPRAEIDAE) (FOSSIL)
- mariaelisabethae, Luria mariaelisabethae (L. Dolin, 1991 †) - (CYPRAEIDAE) (FOSSIL)
- mariaelisabethae, Talparia mariaelisabethae L. Dolin, 1991 † - syn of: Luria mariaelisabethae (L. Dolin, 1991 †) - (CYPRAEIDAE) (FOSSIL)
- Mariaella, Genus Mariaella J.E. Gray, 1855 (ARIOPHANTIDAE)
- mariaemaris, Clanculus mariaemaris F. Rubio & E. Rolán, 2002 - (TROCHIDAE)
- mariaemma, Cymbiola mariaemma J.E. Gray, 1858 - (VOLUTIDAE)
- mariaenus, Drymaeus strigatus mariaenus H.A. Pilsbry, 1898 - (BULIMULIDAE)
- Mariafusus, Genus Mariafusus Petuch, 1988 (FASCIOLARIIDAE) (FOSSIL)
- mariagordae, Chelidonura mariagordae J.A. Ortea, J. Espinosa & L. Moro, 2004 - (AGLAJIDAE)
- mariagordae, Favartia mariagordae Espinosa & Ortea, 2016 - (MURICIDAE)
- mariajoseae, Turbonilla mariajoseae A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- mariajosephinae, Vaugonia mariajosephinae Crickmay, 1930 † - (MYOPHORELLIDAE) (FOSSIL)
- mariamadre, Tegula ligatula mariamadre H.A. Pilsbry & H.N. Lowe, 1932 - (TEGULIDAE)
- marian, Monopteria marian White, 1874 † - (MONOPTERIIDAE) (FOSSIL)
- mariana, Lucinaxinus mariana Cerulli-Irelli 1908 † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- mariana, Chromodoris mariana L.S.R. Bergh, 1890 - (CHROMODORIDIDAE)
- mariana, Cymatosyrinx mariana E.J. Petuch, 1988 † - (DRILLIIDAE) (FOSSIL)
- mariana, Lirosoma mariana E.J. Petuch, 1988 † - (FASCIOLARIIDAE) (FOSSIL)
- mariana, Ilbia mariana P.J. Hoff & C.H. Carlson, 1990 - (ILBIIDAE)
- mariana, Properycina mariana Cerulli-Irelli 1908 † - (LASAEIDAE) (FOSSIL)
- mariana, Mesodesma mariana L.C. Glenn, 1904 † - (MESODESMATIDAE) (FOSSIL)
- mariana, Mitra mariana Martin, 1904 † - (MITRIDAE) (FOSSIL)
- mariana, Montacuta mariana W.H. Dall, 1900 † - (MONTACUTIDAE) (FOSSIL)
- mariana, Evalea mariana Martin, 1904 † - (PYRAMIDELLIDAE) (FOSSIL)
- mariana, Turbonilla mariana P. Bartsch, 1917 - (PYRAMIDELLIDAE)
- mariana, Guillarmodia mariana (W.H. Dall, 1926) - (SPIRAXIDAE)
- mariana, Tegula mariana (W.H. Dall, 1919) - (TEGULIDAE)
- mariana, Chesasyrinx mariana (Martin, 1904 †) - (TURRIDAE) (FOSSIL)
- mariana, Turritella mariana W.H. Dall, 1908 - (TURRITELLIDAE)
- mariana, Abyssogena mariana T.A. Okutani, K. Fujikura, H. Watanabe & K. Ohara, 2013 - (VESICOMYIDAE)
- marianae, Euthria marianae E. Rolán, A. Monteiro & K. Fraussen, 2003 - (BUCCINIDAE)
- marianae, Alzoniella marianae B. Arconada, E. Rolán & H.D. Boeters, 2007 - (HYDROBIIDAE)
- marianae, Pseudorimula marianae McLean, 1989 - (LEPETODRILIDAE)
- marianae, Prunum marianae L. Bozzetti, 1999 - syn of: Prunum pyrumoides M. Lussi & G. Smith, 1999 - (MARGINELLIDAE)
- marianae, Marginella marianae L. Bozzetti, 1999 - syn of: Prunum pyrumoides M. Lussi & G. Smith, 1999 - (MARGINELLIDAE)
- marianae, Sardopaladilhia marianae E. Rolán & A. Martínez-Ortí, 2003 - (MOITESSIERIIDAE)
- marianae, Favartia marianae R. Houart, 2003 - syn of: Murexsul tokubeii marianae (R. Houart, 2003) - (MURICIDAE)
- marianae, Murexsul tokubeii marianae (R. Houart, 2003) - (MURICIDAE)
- marianae, Dikoleps marianae F. Rubio, L. Dantart & A.A. Luque, 1998 - (SKENEIDAE)
- marianae, Tuberes marianae Rubio & Rolán, 2017 - (TORNIDAE)
- marianaensis, Desbruyeresia marianaensis T.A. Okutani & K. Fujikura, 1990 - syn of: Desbruyeresia marianensis (T.A. Okutani & K. Fujikura, 1990) - (PROVANNIDAE)
- Marianarona, Genus Marianarona E.J. Petuch, 1988 (CANCELLARIIDAE) (FOSSIL)
- Marianella, Subgenus Partula (Marianella) H.A. Pilsbry, 1909 (PARTULIDAE)
- marianensis, Desbruyeresia marianensis (T.A. Okutani & K. Fujikura, 1990) - (PROVANNIDAE)
- mariangelae, Muricopsis rutila mariangelae E. Rolán & F. Fernandes, 1991 - (MURICIDAE)
- mariangelae, Marshallora mariangelae F. Fernandes & E. Rolán, 1988 - (TRIPHORIDAE)
- mariani, Cenoceras mariani (C. Gemmellaro, 1911 †) - (CENOCERATIDAE) (FOSSIL)
- mariani, Nautilus mariani C. Gemmellaro, 1911 † - syn of: Cenoceras mariani (C. Gemmellaro, 1911 †) - (NAUTILIDAE) (FOSSIL)
- mariani, Pleurotomaria mariani C. Gemmellaro, 1889 † - (PLEUROTOMARIIDAE) (FOSSIL)
- marianii, Horologica marianii A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- marianii, Omphaloptycha marianii E.A.L. Kittl, 1899 † - (COELOSTYLINIDAE) (FOSSIL)
- marianii, Fuciniceras marianii (Fucini, 1904 †) - (HILDOCERATIDAE) (FOSSIL)
- marianii, Lipuites marianii Krystyn, 1982 † - (TIBETITIDAE) (FOSSIL)
- Marianina, Genus Marianina A. Pruvot-Fol, 1930 (TRITONIIDAE)
- marianna, Poteria marianna (P. Bartsch, 1942) - (NEOCYCLOTIDAE)
- Marianna, syn of: Subgenus Partula (Marianella) H.A. Pilsbry, 1909 (PARTULIDAE)
- mariannae, Cochlostoma mariannae H. Nordsieck, 2011 - (COCHLOSTOMATIDAE)
- mariannae, Ambigua fuscolabiata mariannae (W. Kobelt, 1879) - (HELICIDAE)
- mariannae, Sardopaladilhia mariannae E. Rolán & Ortí, 2003 - syn of: Sardopaladilhia marianae E. Rolán & A. Martínez-Ortí, 2003 - (MOITESSIERIIDAE)
- mariannae, Vladanella mariannae Horný, 1992 † - (MURCHISONIIDAE) (FOSSIL)
- mariannae, Weberoceras mariannae I.S. Barskov † - (TARPHYCERIDA (UNASSIGNED)) (FOSSIL)
- mariannarum, Ladronellum mariannarum (J.F. Quadras & O.F. von Möllendorff, 1894) - (CHAROPIDAE)
- mariannarum, Taheitia mariannarum (J.F. Quadras & O.F. von Möllendorff, 1894) - (TRUNCATELLIDAE)
- Marianoceras, Genus Marianoceras Librovitch , 1962 (RETICULOCERATIDAE) (FOSSIL)
- marianoi, Crithe marianoi T. Cossignani, 2001 - (CYSTISCIDAE)
- marianopsis, Turritella marianopsis E.J. Petuch, 1990 - (TURRITELLIDAE)
- marianum, Gastrioceras marianum Smith, 1896 † - syn of: Gastrioceras listeri (Sowerby, 1812 †) - (GASTRIOCERATIDAE) (FOSSIL)
- marianum, Marianoceras marianum (Verneuil, 1845 †) - (RETICULOCERATIDAE) (FOSSIL)
- marianum, Ptychocentrum marianum (P. Bartsch, 1943) - (UROCOPTIDAE)
- mariaodetae, Fusinus mariaodetae Petuch & Berschauer, 2016 - (FASCIOLARIIDAE)
- mariaodetai, Marginella mariaodetai T. Cossignani, 2010 - (MARGINELLIDAE)
- mariaodeteae, Poremskiconus mariaodeteae E.J. Petuch & B.W. Myers, 2014 - (CONIDAE)
- mariaodeteae, Volvarina mariaodeteae T. Cossignani, 2017 - (MARGINELLIDAE)
- mariaodeteae, Marginella mariaodeteae T. Cossignani, 2014 - (MARGINELLIDAE)
- mariapetrae, Caledoconcha mariapetrae M. Haase & P. Bouchet, 1998 - (HYDROBIIDAE)
- Mariasalpinx, Genus Mariasalpinx Petuch, 1988 (MURICIDAE) (FOSSIL)
- mariasendersae, Amphidromus mariasendersae Thach & F. Huber, 2017 - (CAMAENIDAE)
- mariasensis, Baculites mariasensis Cobban, 1951 † - (BACULITIDAE) (FOSSIL)
- mariasensis, Scaphites mariasensis Cobban, 1851 † - (SCAPHITIDAE) (FOSSIL)
- Mariasveltia, Genus Mariasveltia E.J. Petuch, 1988 (CANCELLARIIDAE) (FOSSIL)
- mariateresae, Prunum mariateresae T. Cossignani, 2009 - (MARGINELLIDAE)
- mariateresae, Retusa mariateresae P. Parenzan, 1970 - syn of: Bulla striata J.G. Bruguière, 1792 - (RETUSIDAE)
- mariatheresiae, Belgrandia mariatheresiae F.L. Giusti & E. Pezzoli, 1974 - (HYDROBIIDAE)
- mariatheresianum, Nostoceras mariatheresianum F. Haas, 1943 † - (NOSTOCERATIDAE) (FOSSIL)
- mariato, Euterebra mariato H.A. Pilsbry & H.N. Lowe, 1932 - (TEREBRIDAE)
- Mariaturricula, Genus Mariaturricula Petuch , 1988 (TURRIDAE) (FOSSIL)
- mariavictoriae, Pisania mariavictoriae Brunetti & Della Bella, 2016 † - (BUCCINIDAE) (FOSSIL)
- maribelae, Profundiconus maribelae M.J. Tenorio & Castelin, 2016 - (CONIDAE)
- marica, Semisulcospira marica H.X. Liu, Wang & Zhang, 1994 - (SEMISULCOSPIRIDAE)
- marica, Glycydonta marica (C. Linnaeus, 1758 †) - (VENERIDA (UNASSIGNED)) (FOSSIL)
- marica, Timoclea marica (C. Linnaeus, 1758) - (VENERIDAE)
- Maricarmenia, Genus Maricarmenia Peρas & Rolαn, 2017 (PYRAMIDELLIDAE)
- Mariceras, Genus Mariceras Ruzhentsev & Shimanskiy, 1954 (SCYPHOCERATIDAE) (FOSSIL)
- marici, Bythinella marici P. Glöer & V.M. Pešic, 2014 - (BYTHINELLIDAE)
- maricola, Nesiocypraea lisetae maricola C.N. Cate, 1976 - (CYPRAEIDAE)
- maricola, Halgerda maricola S.J. Fahey & T.M. Gosliner, 2001 - (DISCODORIDIDAE)
- Maricopella, Genus Maricopella B. Roth, 1996 (CEPOLIDAE)
- maridadilus, Hypselodoris maridadilus W.B. Rudman, 1977 - (CHROMODORIDIDAE)
- marieabbasae, Amphidromus marieabbasae Thach, 2017 - (CAMAENIDAE)
- marieana, Bathytoma marieana T.H. Aldrich, 1911 † - (BORSONIIDAE) (FOSSIL)
- marieastridae, Pisanella marieastridae J.M. Pacaud, Ledon & Loubry, 2015 † - (TURBINELLIDAE) (FOSSIL)
- mariecatherinae, Gregoia mariecatherinae D. Fehse, 2015 - (TRIVIIDAE)
- mariechristinae, Tritonoharpa mariechristinae Lesport, Cluzaud & A. Verhecken, 2015 - (CANCELLARIIDAE)
- mariei, Elasmias mariei (J.C.H. Crosse, 1874) - (ACHATINELLIDAE)
- mariei, Placostylus mariei J.C.H. Crosse & P.H. Fischer, 1867 - (BOTHRIEMBRYONTIDAE)
- mariei, Cancellaria mariei F.P. Jousseaume, 1887 - syn of: Cancellaria indentata G.B. I Sowerby, 1832 - (CANCELLARIIDAE)
- mariei, Mexichromis mariei (J.C.H. Crosse, 1872) - (CHROMODORIDIDAE)
- mariei, Glossodoris mariei J.C.H. Crosse, 1872 - syn of: Mexichromis mariei (J.C.H. Crosse, 1872) - (CHROMODORIDIDAE)
- mariei, Conus mariei F.P. Jousseaume, 1899 - syn of: Virgiconus thalassiarchus (G.B. II Sowerby, 1834) - (CONIDAE)
- mariei, Cyclosurus mariei P.M.A. Morelet, 1881 - (CYCLOPHORIDAE)
- mariei, Doridopsis mariei J.C.H. Crosse, 1872 - syn of: Mexichromis mariei (J.C.H. Crosse, 1872) - (DENDRODORIDIDAE)
- mariei, Doris mariei J.C.H. Crosse, 1875 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DORIDIDAE)
- mariei, Clavus mariei J.C.H. Crosse, 1869 - syn of: Clavus laetus R.B. Hinds, 1843 - (DRILLIIDAE)
- mariei, Epitonium mariei J.C.H. Crosse, 1873 - syn of: Epitonium marmoratum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- mariei, Scalenostoma mariei P. Fischer, 1886 - (EULIMIDAE)
- mariei, Benimakia mariei (J.C.H. Crosse, 1869) - (FASCIOLARIIDAE)
- mariei, Geostilbia mariei J.C.H. Crosse, 1880 - (FERUSSACIIDAE)
- mariei, Rimula mariei (J.B.P.A. Lamarck, 1816) - (FISSURELLIDAE)
- mariei, Goniodoris mariei J.C.H. Crosse, 1872 - syn of: Mexichromis mariei (J.C.H. Crosse, 1872) - (GONIODORIDIDAE)
- mariei, Granulina mariei (J.C.H. Crosse, 1867) - (MARGINELLIDAE)
- mariei, Melanopsis mariei J.C.H. Crosse, 1869 - (MELANOPSIDAE)
- mariei, Retusa mariei (P. Dautzenberg, 1889) - (RETUSIDAE)
- mariei, Diplomphalus mariei (J.C.H. Crosse, 1867) - (RHYTIDIDAE)
- mariei, Ringicula mariei L.J. Morlet, 1880 - (RINGICULIDAE)
- mariei, Inella mariei F.P. Jousseaume, 1884 - (TRIPHORIDAE)
- mariei, Stomatolina mariei (J.C.H. Crosse, 1871) - (TROCHIDAE)
- mariei, Trochus mariei P. Fischer, 1886 - syn of: Pagodatrochus variabilis (H. Adams, 1873) - (TROCHIDAE)
- mariei, Gibbula mariei P. Fischer, 1886 - syn of: Pagodatrochus variabilis (H. Adams, 1873) - (TROCHIDAE)
- mariei, Turbinella mariei J.C.H. Crosse, 1869 - syn of: Benimakia mariei (J.C.H. Crosse, 1869) - (TURBINELLIDAE)
- mariei, Pleurotoma mariei J.C.H. Crosse, 1869 - syn of: Clavus lamberti (R.P. Montrouzier, 1860) - (TURRIDAE)
- mariei intermedia, Retusa mariei intermedia F. Nordsieck, 1972 - (RETUSIDAE)
- mariei neckliaiensis, Placostylus mariei neckliaiensis W. Kobelt, 1891 - syn of: Placostylus porphyrostomus monackensis (J.C.H. Crosse, 1887) - (BOTHRIEMBRYONTIDAE)
- marielae, Acrosterigma marielae B.R. Wilson & A. Stevenson, 1977 - (CARDIIDAE)
- marielae, Fulgiconus marielae (H.A. Rehder & B.R. Wilson, 1975) - (CONIDAE)
- marielae, Phasmoconus marielae H.A. Rehder & B.R. Wilson, 1975 - syn of: Fulgiconus marielae (H.A. Rehder & B.R. Wilson, 1975) - (CONIDAE)
- marielae, Erosaria cernica marielae C.N. Cate, 1960 - (CYPRAEIDAE)
- marielense, Permodomatoceras marielense I.S. Barskov & Shilovsky, 2014 † - (DOMATOCERATIDAE) (FOSSIL)
- marielinum, Cerion marielinum H.A. Pilsbry, 1927 - (CERIONIDAE)
- marielinum, Cerion sculptum marielinum C. de la Torre, 1927 - (CERIONIDAE)
- marielinum constrictum, Cerion marielinum constrictum C.G. Aguayo & M.L. Jaume, 1953 - (CERIONIDAE)
- marielinum dominicanum, Cerion marielinum dominicanum W.J. Clench & C.G. Aguayo, 1951 - (CERIONIDAE)
- marielinus, Drymaeus marielinus F. Poey, 1851 - (BULIMULIDAE)
- mariella, Egilina mariella (A. Adams, 1860) - (PYRAMIDELLIDAE)
- mariella, Alvania mariella A. Adams, 1860 - syn of: Egilina mariella (A. Adams, 1860) - (RISSOIDAE)
- Mariella, Genus Mariella Nowak , 1916 (TURRILITIDAE) (FOSSIL)
- mariellae, Zoila mariellae L. Raybaudi Massilia, 1983 - (CYPRAEIDAE)
- mariellaeformis, Egilina mariellaeformis (S. Nomura, 1938) - (PYRAMIDELLIDAE)
- marielloides, Parthenina marielloides (M. Yokoyama, 1922) - (PYRAMIDELLIDAE)
- Marielma, Subgenus Pseudelma (Marielma) Abdou, Muratov & Bouchet, 2008 (STREPTAXIDAE)
- mariensis, Genitoconia mariensis A.H. Scheltema, 1998 - (GYMNOMENIIDAE)
- mariensis, Mediterranea mariensis E. Gittenberger, 2008 - (OXYCHILIDAE)
- marieri, Doris marieri J.C.H. Crosse, 1875 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DORIDIDAE)
- mariesi, Drillia mariesi J.C. Melvill & R. Standen, 1897 - (DRILLIIDAE)
- mariesi, Cinguloterebra mariesi (E.A. Smith, 1880) - (TEREBRIDAE)
- mariesi, Terebra mariesi E.A. Smith, 1880 - syn of: Cinguloterebra mariesi (E.A. Smith, 1880) - (TEREBRIDAE)
- marieta, Carditella marieta E.V. Coan, 2003 - (CONDYLOCARDIIDAE)
- marigoldensis, Donaldina marigoldensis Thein & Nitecki, 1974 † - (DONALDINIDAE) (FOSSIL)
- marigoldensis, Eotrochus marigoldensis Thein & Nitecki, 1974 † - (PSEUDOPHORIDAE) (FOSSIL)
- marigondon, Reynellona marigondon T. Kase, 1998 - (PICKWORTHIIDAE)
- Marigordiella, Genus Marigordiella J. Espinosa & J.A. Ortea, 2010 (MARGINELLIDAE)
- mariguanense, Strophiops mariguanense W.J. Clench, 1933 - (CERIONIDAE)
- mariguanicolum, Chondropoma mariguanicolum P. Bartsch, 1946 - (POMATIIDAE)
- mariguanicolum stolidum, Chondropoma mariguanicolum stolidum P. Bartsch, 1946 - (POMATIIDAE)
- marii, Moutoniceras marii J.J. Vermeulen, 1997 † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- marii, Cenoceras marii (C. Gemmellaro, 1886 †) - (CENOCERATIDAE) (FOSSIL)
- marii, Nautilus marii C. Gemmellaro, 1886 † - syn of: Cenoceras marii (C. Gemmellaro, 1886 †) - (NAUTILIDAE) (FOSSIL)
- marii, Hoplotropites marii (C. Gemmellaro, 1904 †) - (TROPITIDAE) (FOSSIL)
- marija, Technophorus marija (Pojeta & Runnegar, 1976 †) - (TECHNOPHORIDAE) (FOSSIL)
- marijkae, Bailya marijkae D. De Jong & H.E. Coomans, 1988 - syn of: Ameranna milleri (G.W. Nowell-Usticke, 1959) - (BUCCINIDAE)
- marijkeae, Muregina marijkeae DeVries, 2005 † - (MURICIDAE) (FOSSIL)
- Marikellia, Genus Marikellia B.C. Cotton & F.C. Godfrey, 1938 (KELLIIDAE)
- marileeae, Attenuiconus marileeae M.G. Harasewych, 2014 - (CONIDAE)
- mariles, Octopus mariles Huffard, 2007 - (OCTOPODIDAE)
- marileutes, Bittium marileutes J.C. Melvill & R. Standen, 1895 - syn of: Cerithiopsis marileutes (J.C. Melvill & R. Standen, 1895) - (CERITHIIDAE)
- marileutes, Cerithiopsis marileutes (J.C. Melvill & R. Standen, 1895) - (CERITHIOPSIDAE)
- marilina, Laternula marilina L.A. Reeve, 1860 - syn of: Laternula gracilis (L.A. Reeve, 1860) - (LATERNULIDAE)
- marilina, Anatina marilina L.A. Reeve, 1860 - syn of: Laternula gracilis (L.A. Reeve, 1860) - (MACTRIDAE)
- marilynae, Siphocypraea marilynae E.J. Petuch, 1994 † - (CYPRAEIDAE) (FOSSIL)
- marilynae, Pyrgulopsis marilynae R. Hershler, L. Ratcliffe & al., 2014 - (HYDROBIIDAE)
- Marilynessa, syn of: Genus Marylnessa J. Stanisic, 2010 (CAMAENIDAE)
- Marilyniropa, Genus Marilyniropa Hyman & Stanisic, 2005 (CHAROPIDAE)
- marima, Pelicaria marima (Neef, 1970 ) - (STRUTHIOLARIIDAE)
- marimba, Marginella marimba S. Gofas & F. Fernandes, 1994 - (MARGINELLIDAE)
- marimberti, Chloritis marimberti A.R.J.B. Bavay & P. Dautzenberg, 1900 - (CAMAENIDAE)
- marimberti carinata, Chloritis marimberti carinata A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- marina, Architectonica marina N. Gualtieri, 1742 - syn of: Architectonica gualtierii R. Bieler, 1993 - (ARCHITECTONICIDAE)
- marina, Zoila friendii marina A. Kostin, 2005 - (CYPRAEIDAE)
- marina, Fiona marina L.S.R. Bergh, 1879 - syn of: Fiona pinnata (J.F. von Eschscholtz, 1831) - (FIONIDAE)
- marina, Andrusovia marina (B.M. Logvinenko & Y.I. Starobogatov, 1968) - (HYDROBIIDAE)
- marina, Hydroginella marina F.Jr. Lorenz & A. Kostin, 2007 - (MARGINELLIDAE)
- marina, Nekewis marina Saul, 1988 † - (PERISSITYIDAE) (FOSSIL)
- marina, Austroscalata marina C.O. Waterhouse, 1987 † - (PHYMATOPLEURIDAE) (FOSSIL)
- marina, Laoma marina F.W. Hutton, 1883 - (PUNCTIDAE)
- marina, Rissoa venusta marina F. Nordsieck, 1972 - (RISSOIDAE)
- marina, Teredo marina J.G. Jeffreys, 1860 - syn of: Teredo navalis C. Linnaeus, 1758 - (TEREDINIDAE)
- marinae, Archachatina marinae W.F. Sirgel - (ACHATINIDAE)
- marinae, Berghia marinae L. Carmona, M. Pola, T.M. Gosliner & J.L. Cervera, 2014 - (AEOLIDIIDAE)
- marinae, Lussivolutopsius marinae Y.I. Kantor, 1984 - (BUCCINIDAE)
- marinae, Joculator marinae A. Cecalupo & I. Perugia, 2014 - (CERITHIOPSIDAE)
- marinae, Chaetoderma marinae (D. Ivanov in O.A. Scarlato, 1987) - (CHAETODERMATIDAE)
- marinae, Conasprella marinae (E.J. Petuch & B.W. Myers, 2014) - (CONIDAE)
- marinae, Jaspidiconus marinae E.J. Petuch & B.W. Myers, 2014 - syn of: Conasprella marinae (E.J. Petuch & B.W. Myers, 2014) - (CONIDAE)
- marinae, Gibberula marinae A. Wakefield & T. McCleery, 2004 - (CYSTISCIDAE)
- marinae, Carychiella marinae (Steklov, 1966) † - (ELLOBIIDAE) (FOSSIL)
- marinae, Propebela marinae I.P. Bogdanov, 1989 - (MANGELIIDAE)
- Marinauris, syn of: Genus Haliotis C. Linnaeus, 1758 (HALIOTIDAE)
- marincovichi, Donax marincovichi E.V. Coan, 1983 - syn of: Chion obesulus L.A. Reeve, 1854 - (DONACIDAE)
- marindica, Chromodoris marindica N. Yonow, 2001 - (CHROMODORIDIDAE)
- marindica, Phyllidia marindica (N. Yonow & B.W. Hayward, 1991) - (PHYLLIDIIDAE)
- marindica, Fryeria marindica N. Yonow & B.W. Hayward, 1991 - syn of: Phyllidia marindica (N. Yonow & B.W. Hayward, 1991) - (PHYLLIDIIDAE)
- marinduquenensis, Nerita marinduquenensis Vallejo, 2000 - (NERITIDAE)
- marinduquensis, Cochlostyla marinduquensis J.G. Hidalgo, 1887 - (BRADYBAENIDAE)
- marinellii, Chaetoderma marinellii (G. Schwabl, 1963) - (CHAETODERMATIDAE)
- marinellii, Tandonia marinellii (F. Liberto, S. Giglio, M.S. Colomba, I. Sparacio, 2012) - (MILACIDAE)
- marinensis, Helminthoglypta arrosa marinensis H.A. Pilsbry, 1927 - (HELMINTHOGLYPTIDAE)
- marinensis, Vespericola marinensis B. Roth & W.B. Miller, 1993 - (POLYGYRIDAE)
- Marinescugyra, Genus Marinescugyra Bandel, 2010 (PLANORBIDAE) (FOSSIL)
- marinescui, Radix marinescui Macale?, 2000 † - (LYMNAEIDAE) (FOSSIL)
- marinesiana, Bouryia marinesiana J. Le Renard, 1997 † - (POMATIOPSIDAE) (FOSSIL)
- maringa, Trapania maringa Er. Marcus, 1957 - (GONIODORIDIDAE)
- marinhensis, Baryspira marinhensis (L.R. Cox, 1941 †) - (ANCILLARIIDAE) (FOSSIL)
- marini, Fordilla marini Sampelayo, 1933 † - (FORDILLIDAE) (FOSSIL)
- marinkovici, Gyraulus marinkovici (Š. Brusina, 1892) - (PLANORBIDAE)
- Marinopecten, Genus Marinopecten Termier & al., 1974 (AVICULOPECTINIDAE) (FOSSIL)
- marinovichi, Pectinodonta marinovichi B.A. Marshall, 1998 - (PECTINODONTIDAE)
- Marinula, Genus Marinula P.P. King & W.J. Broderip, 1832 (ELLOBIIDAE)
- marinus, Glaucus marinus J.E. Du Pont, 1763 - syn of: Glaucus atlanticus F. Forster, 1777 - (GLAUCIDAE)
- marinus, Limax marinus P. Forsskål, 1775 - syn of: Fiona pinnata (J.F. von Eschscholtz, 1831) - (LIMACIDAE)
- marioi, Gibberula marioi J. Espinosa & J.A. Ortea, 2000 - (CYSTISCIDAE)
- marioi, Alvania marioi S. Gofas, 1999 - (RISSOIDAE)
- mariona, Naticopsis mariona Thein & Nitecki, 1974 † - (DELPHINULOPSIDAE) (FOSSIL)
- marionae, Merzougites marionae Klug, 2002 † - (BELOCERATIDAE) (FOSSIL)
- marionae, Calliostoma marionae W.H. Dall, 1906 - (CALLIOSTOMATIDAE)
- marionae, Glyphostoma marionae A.A. Olsson & A. Harbison, 1953 † - (CLATHURELLIDAE) (FOSSIL)
- marionae, Hydroginella marionae F. Boyer, 2015 - (MARGINELLIDAE)
- marionae, Subcancilla marionae J.C. Melvill, 1888 - syn of: Subcancilla annulata (L.A. Reeve, 1844) - (MITRIDAE)
- marionae, Longchaeus marionae P. Bartsch, 1955 - syn of: Longchaeus suturalis (H.C. Lea, 1843) - (PYRAMIDELLIDAE)
- marionae, Odostomia marionae W. Macgillivray, 1843 - syn of: Onoba semicostata (G. Montagu, 1803) - (PYRAMIDELLIDAE)
- marionae, Tawera marionae H.J. Finlay, 1928 - (VENERIDAE)
- marionae, Scaphella robusta marionae (H.A. Pilsbry & A.A. Olsson, 1953) - (VOLUTIDAE)
- marionensis, Limopsis marionensis Smith, 1885 - (LIMOPSIDAE)
- marionensis, Crenella marionensis E.A. Smith, 1885 - (MYTILIDAE)
- marionensis, Gabbigonia marionensis (Stephenson, 1923) † - (PTEROTRIGONIIDAE) (FOSSIL)
- marionensis, Rissoa marionensis R.B. Watson, 1886 - syn of: Eatoniella subrufescens (E.A. Smith, 1875) - (RISSOIDAE)
- marioni, Chaetoderma marioni (H.A. Stork, 1941) - (CHAETODERMATIDAE)
- marioni, Coeloceras marioni Lissajous, 1906 † - syn of: Mucrodactylites marioni (Lissajous, 1906 †) - (COELOCERATIDAE) (FOSSIL)
- marioni, Pterocyclos marioni C.M.F. Ancey, 1898 - (CYCLOPHORIDAE)
- marioni, Mucrodactylites marioni (Lissajous, 1906 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- marioni, Collina marioni Lissajous, 1906 † - syn of: Mucrodactylites marioni (Lissajous, 1906 †) - (DACTYLIOCERATIDAE) (FOSSIL)
- marioni, Glyphiolobus marioni (Moore, 1939 †) - (DIMORPHOCERATIDAE) (FOSSIL)
- marioni, Facelinopsis marioni (A.J.B.M. Vayssière, 1888) - (FACELINIDAE)
- marioni, Lima marioni P. Fischer, 1882 - (LIMIDAE)
- marioni, Mytilaster marioni (É.A.A. Locard, 1889) - (MYTILIDAE)
- marioni, Stylopsis marioni É.A.A. Locard, 1897 - (PYRAMIDELLIDAE)
- marioni, Turbonilla marioni L. de Folin, 1879 - syn of: Graphis albida (F. Kanmacher, 1798) - (PYRAMIDELLIDAE)
- marioni, Crisilla marioni (G. Fasulo & A. Gaglini, 1987) - (RISSOIDAE)
- marioni minuscula, Dunkeria marioni minuscula L. de Folin, 1875 - syn of: Graphis albida (F. Kanmacher, 1798) - (PYRAMIDELLIDAE)
- Marionia, Genus Marionia A.J.B.M. Vayssiθre, 1877 (TRITONIIDAE)
- Marioniopsis, Genus Marioniopsis N.H. Odhner, 1934 (TRITONIIDAE)
- mariopenai, Scutalus mariopenai A.S.H. Breure & V. Mogollón Avilla, 2010 - (BULIMULIDAE)
- mariopenai, Anachis mariopenai W.K. Weyrauch - (COLUMBELLIDAE)
- Mariothia, Genus Mariothia Conti & Fischer, 1981 (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Mariottia, Genus Mariottia (OPISTHOBRANCHIA (UNASSIGNED)) (FOSSIL)
- mariottinii, Aphanitoma mariottinii C. Smriglio, S. Rufini & J.M. Martìn Perez, 2001 - (BORSONIIDAE)
- mariottinii, Mitromorpha mariottinii B. Amati, C. Smriglio & M. Oliverio, 2015 - (MITROMORPHIDAE)
- mariposa, Stenoplax mariposa (W.H. Dall, 1919) - (ISCHNOCHITONIDAE)
- Maripythia, syn of: Genus Marinula P.P. King & W.J. Broderip, 1832 (ELLOBIIDAE)
- Marisa, Genus Marisa J.E. Gray, 1824 (AMPULLARIIDAE)
- marisae, Runcinida marisae A. Chernyshev, 1998 - (RUNCINIDAE)
- marisae, Axinopsida marisae Welle & Nagel 2003 † - (THYASIRIDAE) (FOSSIL)
- marisalbi, Cuthona marisalbi I.S. Roginskaya, 1963 - syn of: Cuthonella concinna (J. Alder & A. Hancock, 1843) - (FIONIDAE)
- marisarabica, Abralia marisarabica T.A. Okutani, 1983 - (ENOPLOTEUTHIDAE)
- marisca, Merica marisca P. Bouchet & R.E. Petit, 2002 - (CANCELLARIIDAE)
- mariscali, Gibberula mariscali J. Espinosa & J.A. Ortea, 2007 - (CYSTISCIDAE)
- marisflavi, Calliostoma marisflavi Y.F. Huang & C.C. Fu, 2015 - (CALLIOSTOMATIDAE)
- marisi, Paracochlodina marisi (E.A. Bielz, 1861) - (CLAUSILIIDAE)
- marisindica, Desbruyeresia marisindica T.A. Okutani, J. Hashimoto & T. Sasaki, 2004 - (PROVANNIDAE)
- marisindica, Alviniconcha marisindica T.A. Okutani, 2014 - (PROVANNIDAE)
- marisindicus, Bathymodiolus marisindicus J. Hashimoto, 2001 - (MYTILIDAE)
- marisinicus, Fusinus marisinicus P. Callomon & M.A. Snyder, 2009 - (FASCIOLARIIDAE)
- marisjaponica, Alexandromenia marisjaponica H. Saito & L. Salvini-Plawén, 2014 - (AMPHIMENIIDAE)
- marisjaponicum, Chaetoderma marisjaponicum H. Saito & Salvini-Plawen, 2014 - (CHAETODERMATIDAE)
- marislae, Felimida marislae (H.W. Bertsch, 1973) - (CHROMODORIDIDAE)
- marisminus, Benedictia maxima marisminus T.Y. Sitnikova, 1987 - (LITHOGLYPHIDAE)
- marisminus, Sphaerium marisminus Y.I. Starobogatov & A. Korniushin, 1986 - (SPHAERIIDAE)
- marisnigri, Turricaspia lirata marisnigri Y.I. Starobogatov in T.L. Alexenko & Y.I. Starobogatov, 1987 - (HYDROBIIDAE)
- marisnostri, Ledella marisnostri R. La Perna, 2004 - (NUCULANIDAE)
- marisnostri, Obesula marisnostri P. Bouchet, 1985 - (TRIPHORIDAE)
- marisolae, Corrosella marisolae (D. Delicado, Machordom & M.A. Ramos, 2012) - (HYDROBIIDAE)
- marispuma, Cymbiola marispuma M. Angioy & G. Biraghi, 1977 - syn of: Cymbiola innexa marispuma M. Angioy & G. Biraghi, 1977 - (VOLUTIDAE)
- marispuma, Cymbiola innexa marispuma M. Angioy & G. Biraghi, 1977 - (VOLUTIDAE)
- marisrossensis, Austrochlamys marisrossensis H.A. Jonkers, 2003 † - (PECTINIDAE) (FOSSIL)
- marisrubri, Echinolittorina marisrubri D.G. Reid, 2007 - (LITTORINIDAE)
- marisrubri, Spondylus marisrubri P.F. Röding, 1798 - syn of: Spondylus spinosus K. Schreibers, 1793 - (SPONDYLIDAE)
- marisrubri, Turbo marisrubri K. Kreipl & A. Alf, 2001 - (TURBINIDAE)
- marisrubris, Zafra marisrubris E. Neubert, 1998 - (COLUMBELLIDAE)
- marissae, Clathrodrillia marissae P.J. Fallon, 2016 - (DRILLIIDAE)
- marissinica, Acesta marissinica H. Yamashita & T. Habe, 1969 - (LIMIDAE)
- Marita, Genus Marita C. Hedley, 1922 (MANGELIIDAE)
- maritae, Vitrea maritae (M. von Kimakowicz, 1890) - (PRISTILOMATIDAE)
- maritae, Retinella maritae M. von Kimakowicz, 1890 - (ZONITIDAE)
- maritima, Euhadra subnimbosa maritima (J.T. Gulick & H.A. Pilsbry, 1900) - (BRADYBAENIDAE)
- maritima, Clathropsis maritima C.F. Laseron, 1956 - (CERITHIOPSIDAE)
- maritima, Hypselodoris maritima (K. Baba, 1949) - (CHROMODORIDIDAE)
- maritima, Glossodoris maritima K. Baba, 1949 - syn of: Hypselodoris maritima (K. Baba, 1949) - (CHROMODORIDIDAE)
- maritima, Boettgeria maritima R.T. Lowe, 1855 - syn of: Boettgeria deltostoma (R.T. Lowe, 1831) - (CLAUSILIIDAE)
- maritima, Stigmatica stigmatica maritima (Kleciak, 1875) - (CLAUSILIIDAE)
- maritima, Cyrena maritima C.B. Adams, 1852 - syn of: Polymesoda inflata (R.A. Philippi, 1851) - (CYRENIDAE)
- maritima, Polymesoda maritima D'Orbigny, 1853 - syn of: Polymesoda floridana (T.A. Conrad, 1846) - (CYRENIDAE)
- maritima, Clathrospira maritima E.F.R.K. Koken, 1897 † - syn of: Deacheospira maritima (E.F.R.K. Koken, 1897 †) - (EOTOMARIIDAE) (FOSSIL)
- maritima, Deacheospira maritima (E.F.R.K. Koken, 1897 †) - (GOSSELETINIDAE) (FOSSIL)
- maritima, Ecrobia maritima (K.O. Milaschewitsch, 1916) - (HYDROBIIDAE)
- maritima, Hydrobia maritima K.O. Milaschewitsch, 1916 - syn of: Ecrobia maritima (K.O. Milaschewitsch, 1916) - (HYDROBIIDAE)
- maritima, Cernuella maritima J.P.R. Draparnaud, 1805 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- maritima, Stagnicola fusca maritima (S. Clessin, 1878) - (LYMNAEIDAE)
- maritima, Parachondria maritima (C.B. Adams, 1846) - (POMATIIDAE)
- maritima aurora, Parachondria maritima aurora (C.B. Adams, 1846) - (POMATIIDAE)
- maritimum, Cerion maritimum (L. Pfeiffer, 1839) - (CERIONIDAE)
- maritimum, Farcimen gundlachi maritimum L.O. Alcalde, 1946 - (MEGALOMASTOMIDAE)
- maritimum sublaevigatum, Cerion maritimum sublaevigatum L. Pfeiffer in H.A. Pilsbry & E.G. Vanatta, 1895 - (CERIONIDAE)
- maritimus, Hoplites maritimus B. Owen, 1971 † - (HOPLITIDAE) (FOSSIL)
- maritimus, Subvestinautilus maritimus Shimanskiy, 1967 † - (KONINCKIOCERATIDAE) (FOSSIL)
- maritimus, Brachidontes maritimus (H.A. Pilsbry, 1921) - (MYTILIDAE)
- maritimus, Popenoeum maritimus R.L. Squires, Zinsmeister & Paredes-mejia, 1989 † - (PSEUDOLIVIDAE) (FOSSIL)
- maritimus bajaensis, Popenoeum maritimus bajaensis R.L. Squires, Zinsmeister & Paredes-mejia, 1989 † - (PSEUDOLIVIDAE) (FOSSIL)
- maritzae, Amalda maritzae L. Bozzetti, 2007 - (ANCILLARIIDAE)
- maritzana, Anodonta maritzana J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- maritzanus, Planorbarius maritzanus Drenski, 1947 - syn of: Planorbarius corneus (C. Linnaeus, 1758) - (PLANORBIDAE)
- maritzanus, Viviparus ater maritzanus (F. Haas, 1913) - (VIVIPARIDAE)
- maritzburgensis, Edouardia maritzburgensis (J.C. Melvill & J.H. Ponsonby, 1893) - (CERASTUIDAE)
- marjae, Chondrina marjae B. Kokshoorn & E. Gittenberger, 2010 - (CHONDRINIDAE)
- marjorae, Megalomphala marjorae Peel, 1991 † - (BUCANIIDAE) (FOSSIL)
- marjoriae, Murex marjoriae J.C. Melvill & R. Standen, 1903 - syn of: Favartia maculata (L.A. Reeve, 1845) - (MURICIDAE)
- markae, Plocezyga markae Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- markevichi, Timorites markevichi Zakharov, 1989 † - (CYCLOLOBIDAE) (FOSSIL)
- markevichi, Prionites markevichi Zakharov & Smyshlyaeva, 2013 † - (PRIONITIDAE) (FOSSIL)
- markhaensis, Prosolarium markhaensis Peel & Gubanov, 1997 † - (LUCIELLIDAE) (FOSSIL)
- marki, Epifungium marki E. Gittenberger & A. Gittenberger, 2005 - (EPITONIIDAE)
- markini, Strophocardia markini (Ilyina, 1963 †) - (CARDITIDAE) (FOSSIL)
- markini, Palaeomutela markini Betekhtina † - (PALAEOMUTELIDAE) (FOSSIL)
- marklandensis, Liospira marklandensis McLearn, 1924 † - syn of: Liospira lenticularis (J. de C. Sowerby & Murchison, 1839 †) - (EOTOMARIIDAE) (FOSSIL)
- marklini, Euomphalopterus marklini (Lindström, 1884 †) - (EUOMPHALIDAE) (FOSSIL)
- marklini, Pleurotomaria marklini Lindström, 1884 † - syn of: Euomphalopterus marklini (Lindström, 1884 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- markoei, Glossus markoei T.A. Conrad, 1842 † - (GLOSSIDAE) (FOSSIL)
- markovi, Bythinella markovi P. Glöer & D.G. Georgiev, 2009 - (BYTHINELLIDAE)
- markovskensis, Corbicula markovskensis Devjatilova, 1980 † - syn of: Cyrenobatissa sakakibarai (Otatume, 1943 †) - (CYRENIDAE) (FOSSIL)
- markovskensis, Lacia markovskensis Devjatilova, 1981 † - syn of: Acila pleschakovi L. Krishtofovich, 1947 † - (NUCULIDAE) (FOSSIL)
- Marksella, Subgenus Admete (Marksella) A.A. Olsson, 1964 (CANCELLARIIDAE) (FOSSIL)
- marksi, Anadara marksi A.A. Olsson, 1964 † - (ARCIDAE) (FOSSIL)
- marksi, Hertleinia marksi A.A. Olsson, 1964 † - (CANCELLARIIDAE) (FOSSIL)
- marksi, Strombina marksi L.G. Hertlein & A.M. Strong, 1951 - (COLUMBELLIDAE)
- marksi, Hexaplex marksi G.F. Harris, 1894 † - (MURICIDAE) (FOSSIL)
- marksi, Pteropurpura marksi A.A. Olsson, 1964 † - (MURICIDAE) (FOSSIL)
- marksi, Eutrephoceras marksi Miller, 1947 † - (NAUTILIDAE) (FOSSIL)
- marksi, Niteoliva marksi A.A. Olsson, 1956 † - (OLIVELLIDAE) (FOSSIL)
- markusevecensis, Melanopsis haueri markusevecensis W.A. Wenz, 1930 † - (MELANOPSIDAE) (FOSSIL)
- markuseveci, Theodoxus leobersdorfensis markuseveci Jurišic-Polšak, 1979 † - (NERITIDAE) (FOSSIL)
- markusreuteri, Cerithium markusreuteri M. Harzhauser, 2007 † - (CERITHIIDAE) (FOSSIL)
- markusrufi, Marmarostoma markusrufi K. Kreipl & A. Alf, 2003 - (TURBINIDAE)
- marlboroughensis, Eucominia marlboroughensis A.W.B. Powell, 1946 - syn of: Cominella elegantula (H.J. Finlay, 1926) - (BUCCINIDAE)
- marlboroughensis, Cominella marlboroughensis A.W.B. Powell, 1946 - syn of: Cominella elegantula (H.J. Finlay, 1926) - (BUCCINIDAE)
- marlburiana, Alcithoe marlburiana L. C. King, 1934 † - (VOLUTIDAE) (FOSSIL)
- marliesbeckerae, Mitrella marliesbeckerae C. Nielsen, 2003 † - (COLUMBELLIDAE) (FOSSIL)
- marloffsteinensis, Ischnochiton marloffsteinensis Fiedel & Keupp, 1988 † - (ISCHNOCHITONIDAE) (FOSSIL)
- Marloffsteinia, Genus Marloffsteinia Nόtzel & Grόndel, 2015 (EUCYCLOSCALIDAE) (FOSSIL)
- marlowense, Desmoceras marlowense Crick 1910 † - (DESMOCERATIDAE) (FOSSIL)
- marlowi, Trivellona marlowi (G. Rosenberg & H.E. Finley, 2001) - (TRIVIIDAE)
- marmarensis, Pseudohollandites marmarensis (Arthaber, 1912 †) - (BEYRICHITIDAE) (FOSSIL)
- marmarensis, Semiornites marmarensis Arthaber, 1912 † - syn of: Pseudohollandites marmarensis (Arthaber, 1912 †) - (CERATITIDAE) (FOSSIL)
- marmarensis, Ismidites marmarensis Arthaber, 1915 † - (KHVALYNITIDAE) (FOSSIL)
- marmarina, Clavatula marmarina (R.B. Watson, 1881) - (CLAVATULIDAE)
- marmarina, Helix marmarina D'Orbigny, 1835 - syn of: Drymaeus marmarinus (A.V.M.D. D'Orbigny, 1835) - (HELICIDAE)
- marmarina, Pleurotoma marmarina R.B. Watson, 1881 - syn of: Clavatula marmarina (R.B. Watson, 1881) - (TURRIDAE)
- marmarinus, Drymaeus marmarinus (A.V.M.D. D'Orbigny, 1835) - (BULIMULIDAE)
- marmarisensis, Alvania marmarisensis Bitlis & Öztürk, 2017 - (RISSOIDAE)
- Marmarofusus, Genus Marmarofusus Snyder & Lyons, 2014 (FASCIOLARIIDAE)
- Marmaronia, Genus Marmaronia Larghi, 2002 (BAKEVELLIIDAE) (FOSSIL)
- Marmarostoma, Subgenus Turbo (Marmarostoma) W.J. Swainson, 1829 (TURBINIDAE)
- marmarotis, Monadenia marmarotis S.S. Berry, 1940 - (MONADENIIDAE)
- marmatensis, Bulimulus marmatensis L. Pfeiffer, 1855 - (BULIMULIDAE)
- marmatensis, Labyrinthus marmatensis H.A. Pilsbry, 1910 - (CAMAENIDAE)
- marminea, Mitrella marminea A. Risso, 1826 - syn of: Pollia dorbignyi (B.C.M. Payraudeau, 1826) - (COLUMBELLIDAE)
- marmini, Olivancillaria marmini (J.L.H. Michelin, 1828 †) - (OLIVIDAE) (FOSSIL)
- marmolatae, Worthenia marmolatae E.A.L. Kittl, 1894 † - (LOPHOSPIRIDAE) (FOSSIL)
- Marmolatella, Genus Marmolatella Kittl, 1894 (DELPHINULOPSIDAE) (FOSSIL)
- marmorae, Loligo marmorae J.B. Vérany, 1839 - syn of: Alloteuthis media (C. Linnaeus, 1758) - (LOLIGINIDAE)
- Marmorana, Genus Marmorana J.D.W. Hartmann, 1844 (HELICIDAE)
- marmorarius, Sonorella marmorarius H.A. Pilsbry & J.H. Ferriss, 1919 - (HELMINTHOGLYPTIDAE)
- marmorata, Partulina marmorata (A.A. Gould, 1848) - (ACHATINELLIDAE)
- marmorata, Acmaea marmorata J.E. Tenison-Woods, 1876 - syn of: Patelloida latistrigata (G.F. Angas, 1865) - (ACMAEIDAE)
- marmorata, Eidothea marmorata A. Risso, 1826 - syn of: Philinopsis depicta (S.A. Renier, 1807) - (AGLAJIDAE)
- marmorata, Acera marmorata F.J. Cantraine, 1841 - syn of: Aglaja tricolorata S.A. Renier, 1807 - (AKERIDAE)
- marmorata, Ancilla marmorata (L.A. Reeve, 1864) - (ANCILLARIIDAE)
- marmorata, Aplysia marmorata H.M.D. de Blainville, 1823 - (APLYSIIDAE)
- marmorata, Arca marmorata J.F. Gmelin, 1791 - syn of: Glycymeris marmorata (J.F. Gmelin, 1791) - (ARCIDAE)
- marmorata, Parmarion pupillaris marmorata E.C. Von Martens, 1867 - (ARIOPHANTIDAE)
- marmorata, Armina marmorata (E.F. Kelaart, 1859) - (ARMINIDAE)
- marmorata, Bornella marmorata C. Collingwood, 1881 - syn of: Bornella stellifer (A. Adams & L.A. Reeve in A. Adams, 1848) - (BORNELLIDAE)
- marmorata, Pollia marmorata L.A. Reeve, 1846 - syn of: Prodotia iostoma (J.E. Gray, 1834) - (BUCCINIDAE)
- marmorata, Bulla marmorata A. Adams, 1850 - syn of: Mnestia marmorata (A. Adams, 1850) - (BULLIDAE)
- marmorata, Obba planulata marmorata O.F. von Möllendorff, 1892 - (CAMAENIDAE)
- marmorata, Cassis marmorata P.F. Röding, 1798 - syn of: Cassis flammea (C. Linnaeus, 1758) - (CASSIDAE)
- marmorata, Cassis marmorata P.F. Röding, 1798 - syn of: Cassis flammea (C. Linnaeus, 1758) - (CASSIDAE)
- marmorata, Seila marmorata (R. Tate, 1893) - (CERITHIOPSIDAE)
- marmorata, Chaetopleura gemma marmorata W.H. Dall, 1919 - (CHAETOPLEURIDAE)
- marmorata, Glossodoris marmorata (J.V. Audouin in M.J.C.L. de Savigny, 1826) - (CHROMODORIDIDAE)
- marmorata, Albinaria retusa marmorata F.W. Welter-Schultes, 1990 - (CLAUSILIIDAE)
- marmorata, Pardalinops marmorata (J.E. Gray, 1839) - (COLUMBELLIDAE)
- marmorata, Nitidella marmorata W.J. Swainson, 1840 - syn of: Nitidella nitida (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- marmorata, Nitidella marmorata W.J. Swainson, 1840 - syn of: Nitidella nitida (J.B.P.A. Lamarck, 1822) - (COLUMBELLIDAE)
- marmorata, Caryocorbula marmorata (R.B. Hinds, 1843) - (CORBULIDAE)
- marmorata, Lyncina marmorata H.M.D. de Blainville, 1826 - syn of: Lyncina carneola (C. Linnaeus, 1758) - (CYPRAEIDAE)
- marmorata, Purpuradusta marmorata J.S. Schröter, 1804 - syn of: Purpuradusta fimbriata (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- marmorata, Alloiodoris marmorata L.S.R. Bergh, 1904 - (DISCODORIDIDAE)
- marmorata, Peltodoris marmorata L.S.R. Bergh, 1898 - syn of: Diaulula variolata (A.V.M.D. D'Orbigny, 1837) - (DISCODORIDIDAE)
- marmorata, Anisodoris marmorata L.S.R. Bergh, 1898 - syn of: Diaulula variolata (A.V.M.D. D'Orbigny, 1837) - (DISCODORIDIDAE)
- marmorata, Doris marmorata A. Risso, 1818 - (DORIDIDAE)
- marmorata, Stalactella marmorata F.G. Thompson & E.L. Mihalcik, 2005 - (EPIROBIIDAE)
- marmorata, Niso marmorata (G.B. I Sowerby, 1834) - (EULIMIDAE)
- marmorata, Glycymeris marmorata (J.F. Gmelin, 1791) - (GLYCYMERIDIDAE)
- marmorata, Haliotis marmorata C. Linnaeus, 1758 - (HALIOTIDAE)
- marmorata, Haliotis marmorata L.A. Reeve, 1846 - syn of: Haliotis virginea J.F. Gmelin, 1791 - (HALIOTIDAE)
- marmorata, Viana regina marmorata (C. de la Torre, 1950) - (HELICINIDAE)
- marmorata, Lacuna marmorata W.H. Dall, 1919 - (LITTORINIDAE)
- marmorata, Littorina marmorata L. Pfeiffer, 1839 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (LITTORINIDAE)
- marmorata, Patelloida marmorata H.A. Pilsbry, 1891 - syn of: Patelloida latistrigata (G.F. Angas, 1865) - (LOTTIIDAE)
- marmorata, Imbricaria marmorata G.H. Schubert & J.A. Wagner, 1825 - syn of: Imbricaria conularis (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- marmorata, Mnestia marmorata (A. Adams, 1850) - (MNESTIIDAE)
- marmorata, Mancinella marmorata (W.H. Pease, 1865) - (MURICIDAE)
- marmorata, Purpura marmorata W.H. Pease, 1868 - syn of: Mancinella marmorata (W.H. Pease, 1865) - (MURICIDAE)
- marmorata, Natica marmorata H. Adams, 1869 - syn of: Natica prietoi J.G. Hidalgo, 1873 - (NATICIDAE)
- marmorata, Natica marmorata A. Risso, 1826 - syn of: Euspira guilleminii (B.C.M. Payraudeau, 1826) - (NATICIDAE)
- marmorata, Nerita marmorata J.B. Hombron & C.H. Jacquinot, 1854 - syn of: Argonerita chamaeleon (C. Linnaeus, 1758) - (NERITIDAE)
- marmorata, Theliostyla sanguinolenta marmorata L.A. Reeve, 1855 - (NERITIDAE)
- marmorata, Spixia marmorata M.I. Hylton-Scott, 1971 - (ODONTOSTOMIDAE)
- marmorata, Crenavolva marmorata D. Fehse, 2007 - (OVULIDAE)
- marmorata, Aplexa marmorata L. Guilding, 1828 - (PHYSIDAE)
- marmorata, Stenophysa marmorata G.B. I Sowerby, 1822 - syn of: Aplexa marmorata L. Guilding, 1828 - (PHYSIDAE)
- marmorata, Elysia marmorata F.J. Cantraine, 1835 - syn of: Elysia viridis (G. Montagu, 1804) - (PLAKOBRANCHIDAE)
- marmorata, Pteria hirundo marmorata L.A. Reeve, 1857 - (PTERIIDAE)
- marmorata, Odostomia marmorata G.B. I Sowerby, 1834 - syn of: Niso marmorata (G.B. I Sowerby, 1834) - (PYRAMIDELLIDAE)
- marmorata, Daphnella marmorata R.B. Hinds, 1844 - (RAPHITOMIDAE)
- marmorata, Nepotilla marmorata (J.C. Verco, 1909) - (RAPHITOMIDAE)
- marmorata, Haurakia marmorata (C. Hedley, 1907) - (RISSOIDAE)
- marmorata, Crisilla marmorata (F.J. Cantraine, 1842) - syn of: Crisilla semistriata (G. Montagu, 1808) - (RISSOIDAE)
- marmorata, Scyllaea marmorata J. Alder & A. Hancock, 1864 - syn of: Scyllaea pelagica C. Linnaeus, 1758 - (SCYLLAEIDAE)
- marmorata, Hastulopsis marmorata (G.P. Deshayes, 1859) - (TEREBRIDAE)
- marmorata, Triphora marmorata R.B. Hinds, 1843 - (TRIPHORIDAE)
- marmorata, Nemocephala marmorata A. da Costa, 1867 - syn of: Tritonia manicata G.P. Deshayes, 1853 - (TRITONIIDAE)
- marmorata, Conotalopia marmorata W.H. Pease, 1861 - syn of: Calliotrochus marmoreus (W.H. Pease, 1861) - (TROCHIDAE)
- marmorata, Trochositala marmorata A.A. Schileyko, 2002 - (TROCHOMORPHIDAE)
- marmorata, Syrinx marmorata P.F. Röding, 1798 - syn of: Marmarofusus nicobaricus (P.F. Röding, 1798) - (TURBINELLIDAE)
- marmorata, Turris marmorata J.B.P.A. Lamarck, 1816 - (TURRIDAE)
- marmorata, Lophiotoma marmorata J.H.F. Link, 1807 - syn of: Lophiotoma indica (P.F. Röding, 1798) - (TURRIDAE)
- marmorata, Tetrentodon marmorata (R.J. Shuttleworth, 1852) - (UROCOPTIDAE)
- marmorata, Katelysia marmorata J.B.P.A. Lamarck, 1818 - syn of: Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- marmorata, Paphia marmorata J.B.P.A. Lamarck, 1818 - syn of: Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- marmorata, Marcia marmorata J.B.P.A. Lamarck, 1818 - syn of: Marcia recens marmorata (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- marmorata, Circe marmorata L.A. Reeve, 1863 - syn of: Gafrarium divaricatum (J.F. Gmelin, 1791) - (VENERIDAE)
- marmorata, Marcia recens marmorata (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- marmorata, Amoria marmorata W.J. Swainson, 1821 - syn of: Amoria hunteri (T. Iredale, 1931) - (VOLUTIDAE)
- marmorata, Voluta marmorata W.J. Swainson, 1821 - syn of: Amoria hunteri (T. Iredale, 1931) - (VOLUTIDAE)
- marmorata geigeri, Haliotis marmorata geigeri B. Owen, 2014 - syn of: Haliotis geigeri B. Owen, 2014 - (HALIOTIDAE)
- marmorata polita, Strophia marmorata polita C.J. Maynard, 1896 - syn of: Strophiops polita C.J. Maynard, 1896 - (CERIONIDAE)
- marmorata pura, Ancilla marmorata pura G.B. III Sowerby, 1892 - (ANCILLARIIDAE)
- marmoratum, Pseudaneitea marmoratum (H.R. Simroth, 1889) - (ATHORACOPHORIDAE)
- marmoratum, Buccinum marmoratum L.A. Reeve, 1846 - syn of: Prodotia iostoma (J.E. Gray, 1834) - (BUCCINIDAE)
- marmoratum, Caecum marmoratum L. de Folin, 1869 - (CAECIDAE)
- marmoratum, Cerion marmoratum L. Pfeiffer, 1847 - (CERIONIDAE)
- marmoratum, Pseudovertagus marmoratum J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Pseudovertagus clava (J.F. Gmelin, 1791) - (CERITHIIDAE)
- marmoratum, Epitonium marmoratum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- marmoratum, Onchidium marmoratum R.P. Lesson, 1826 - syn of: Onchidium vaigiense (J.R.C. Quoy & J.P. Gaimard, 1824) - (ONCHIDIIDAE)
- marmoratum, Parvamussium marmoratum (W.H. Dall, 1881) - (PROPEAMUSSIIDAE)
- marmoratum, Charonia marmoratum J.H.F. Link, 1807 - syn of: Charonia tritonis (C. Linnaeus, 1758) - (RANELLIDAE)
- marmoratum, Cymbium marmoratum J.H.F. Link, 1807 - (VOLUTIDAE)
- marmoratus, Dryptus marmoratus (R.W. Dunker, 1844) - (AMPHIBULIMIDAE)
- marmoratus, Bulimus marmoratus R.W. Dunker, 1844 - syn of: Dryptus marmoratus (R.W. Dunker, 1844) - (BULIMULIDAE)
- marmoratus, Chiton marmoratus J.F. Gmelin, 1791 - (CHITONIDAE)
- marmoratus, Onithochiton marmoratus K. von Wissel, 1904 - syn of: Onithochiton neglectus A. de Rochebrune, 1881 - (CHITONIDAE)
- marmoratus, Chiton marmoratus W.H. Dall, 1919 - syn of: Chaetopleura gemma marmorata W.H. Dall, 1919 - (CHITONIDAE)
- marmoratus, Conus marmoratus H.S. Holten, 1802 - (CONIDAE)
- marmoratus, Conus marmoratus J.S. Schröter, 1803 - (CONIDAE)
- marmoratus, Pseudolatirus marmoratus (R.A. Philippi, 1846 †) - (FASCIOLARIIDAE) (FOSSIL)
- marmoratus, Fasciolaria marmoratus P.F. Röding, 1798 - syn of: Fasciolaria tulipa (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- marmoratus, Glycymeris marmoratus L.A. Reeve, 1843 - syn of: Glycymeris flammea (L.A. Reeve, 1843) - (GLYCYMERIDIDAE)
- marmoratus, Pectunculus marmoratus J.B.P.A. Lamarck, 1819 - syn of: Glycymeris glycymeris (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- marmoratus, Iberus marmoratus A.E.J. Férussac, 1823 - (HELICIDAE)
- marmoratus, Ischnochiton marmoratus W.H. Dall, 1919 - syn of: Chaetopleura gemma W.H. Dall, 1879 - (ISCHNOCHITONIDAE)
- marmoratus, Paralimax marmoratus H.R. Simroth, 1901 - syn of: Eumilax brandti (E.C. Von Martens, 1880) - (LIMACIDAE)
- marmoratus, Lomanotus marmoratus (J. Alder & A. Hancock, 1845) - (LOMANOTIDAE)
- marmoratus, Imbricaria marmoratus W.J. Swainson, 1821 - syn of: Imbricaria conularis (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- marmoratus, Mytilus marmoratus E. Forbes, 1838 - syn of: Musculus subpictus (F.J. Cantraine, 1835) - (MYTILIDAE)
- marmoratus, Musculus marmoratus E. Forbes, 1838 - syn of: Musculus subpictus (F.J. Cantraine, 1835) - (MYTILIDAE)
- marmoratus, Octopus marmoratus W.E. Hoyle, 1885 - syn of: Octopus cyanea J.E. Gray, 1849 - (OCTOPODIDAE)
- marmoratus, Liguus fasciatus marmoratus H.A. Pilsbry, 1912 - (ORTHALICIDAE)
- marmoratus, Ensiculus marmoratus (R.W. Dunker, 1862) - (PHARIDAE)
- marmoratus, Pholas marmoratus G. Perry, 1811 - syn of: Pholas dactylus C. Linnaeus, 1758 - (PHOLADIDAE)
- marmoratus, Spondylus marmoratus K. Schreibers, 1793 - syn of: Spondylus foliaceus K. Schreibers, 1793 - (SPONDYLIDAE)
- marmoratus, Turbo marmoratus C. Linnaeus, 1758 - (TURBINIDAE)
- marmoratus, Microceramus marmoratus C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- marmoratus, Zonitarion marmoratus G.A. de Mol, 1970 - (UROCYCLIDAE)
- marmoratus alcarazanus, Iberus marmoratus alcarazanus (A. Guirao, 1854) - (HELICIDAE)
- marmoratus cobosi, Iberus marmoratus cobosi (C.M. Ibáñez & M.R. Alonso, 1977) - (HELICIDAE)
- marmoratus guiraoanus, Iberus marmoratus guiraoanus (L. Pfeiffer, 1853) - (HELICIDAE)
- marmoratus intermedius, Iberus marmoratus intermedius (C.R. Böttger, 1913) - (HELICIDAE)
- marmoratus loxanus, Iberus marmoratus loxanus (A. Schmidt, 1853) - (HELICIDAE)
- marmoratus ortizi, Iberus marmoratus ortizi E. Garcia San Nicolás, 1957 - (HELICIDAE)
- marmoratus rositai, Iberus marmoratus rositai S .de Fez, 1950 - (HELICIDAE)
- marmorea, Achatina marmorea L.A. Reeve, 1850 - syn of: Petriola marmorea (L.A. Reeve, 1850) - (ACHATINIDAE)
- marmorea, Dolabrifera marmorea W.H. Pease - syn of: Dolabrifera dolabrifera (P.C.A.S.L. Rang, 1828) - (APLYSIIDAE)
- marmorea, Barleeia marmorea P.P. Carpenter, 1864 - syn of: Pseudodiala acuta (P.P. Carpenter, 1864) - (BARLEEIIDAE)
- marmorea, Bulla marmorea W.H. Pease, 1861 - syn of: Bulla vernicosa A.A. Gould, 1859 - (BULLIDAE)
- marmorea, Cardita marmorea L.A. Reeve, 1843 - syn of: Megacardita nodulosa (J.B.P.A. Lamarck, 1819) - (CARDITIDAE)
- marmorea, Costellaria marmorea A. Adams, 1853 - syn of: Vexillum polygonum (J.F. Gmelin, 1791) - (COSTELLARIIDAE)
- marmorea, Cuspidaria marmorea F.R. Bernard, 1989 - syn of: Rhinoclama filatovae (F.R. Bernard, 1979) - (CUSPIDARIIDAE)
- marmorea, Diala marmorea P.P. Carpenter, 1864 - syn of: Pseudodiala acuta (P.P. Carpenter, 1864) - (DIALIDAE)
- marmorea, Margarites marmorea W.H. Pease, 1861 - syn of: Calliotrochus marmoreus (W.H. Pease, 1861) - (MARGARITIDAE)
- marmorea, Mitra marmorea H. Turner, 2007 - (MITRIDAE)
- marmorea, Tonicella marmorea (Fabrius, 1780) - (MOPALIIDAE)
- marmorea, Nassa marmorea A. Adams, 1852 - syn of: Nassarius marmoreus (A. Adams, 1852) - (NASSARIIDAE)
- marmorea, Nucula marmorea R.B. Hinds, 1843 - (NUCULIDAE)
- marmorea, Oliva marmorea F.P. Marrat, 1871 - syn of: Oliva flammulata J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- marmorea, Pallifera marmorea H.A. Pilsbry, 1948 - (PHILOMYCIDAE)
- marmorea, Psammobia marmorea G.P. Deshayes, 1855 - syn of: Gari maculosa J.B.P.A. Lamarck, 1818 - (PSAMMOBIIDAE)
- marmorea, Eulimella marmorea S. Hori & E. Tsuchida, 1996 - (PYRAMIDELLIDAE)
- marmorea, Petriola marmorea (L.A. Reeve, 1850) - (SUBULINIDAE)
- marmorea, Tancredia marmorea Cox & Arkell † - (TANCREDIIDAE) (FOSSIL)
- marmorea, Psammacoma marmorea Gardner, 1947 † - (TELLINIDAE) (FOSSIL)
- marmorea, Gibbula marmorea W.H. Pease, 1861 - syn of: Calliotrochus marmoreus (W.H. Pease, 1861) - (TROCHIDAE)
- marmorea blaneyi, Tonicella marmorea blaneyi W.H. Dall, 1905 - syn of: Tonicella blaneyi W.H. Dall, 1905 - (MOPALIIDAE)
- marmorella, Amphidoxa marmorella (L. Pfeiffer, 1845) - (CHAROPIDAE)
- marmorensis, Discus marmorensis H.B. Baker, 1932 - (DISCIDAE)
- marmoreum, Acrosterigma marmoreum J.B.P.A. Lamarck, 1819 - syn of: Acrosterigma magna (C. Linnaeus, 1758) - (CARDIIDAE)
- marmoreum, Epitonium marmoreum P.F. Röding, 1798 - syn of: Turritella variegata (C. Linnaeus, 1758) - (EPITONIIDAE)
- marmoreum, Chondropoma marmoreum G.T. Watters & G. Duffy, 2010 - (POMATIIDAE)
- marmoreum, Angulaticeras marmoreum (Oppel, 1862 †) - (SCHLOTHEIMIIDAE) (FOSSIL)
- marmoreum, Charmasseiceras marmoreum Oppel, 1862 † - syn of: Angulaticeras marmoreum (Oppel, 1862 †) - (SCHLOTHEIMIIDAE) (FOSSIL)
- marmoreum, Tonna marmoreum J.S. Schröter in W. Martini, 1788 - syn of: Tonna canaliculata (C. Linnaeus, 1758) - (TONNIDAE)
- marmoreum, Tonna marmoreum J.S. Schröter, 1788 - syn of: Tonna canaliculata (C. Linnaeus, 1758) - (TONNIDAE)
- marmoreus, Conus marmoreus C. Linnaeus, 1758 - (CONIDAE)
- marmoreus, Conus marmoreus G. Perry, 1811 - syn of: Strategoconus monile (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- marmoreus, Nassarius marmoreus (A. Adams, 1852) - (NASSARIIDAE)
- marmoreus, Gudeodiscus marmoreus B. Páll-Gergely, 2014 - (PLECTOPYLIDAE)
- marmoreus, Calliotrochus marmoreus (W.H. Pease, 1861) - (TROCHIDAE)
- marmoreus, Cantharidus marmoreus (W.H. Pease, 1868) - (TROCHIDAE)
- marmoreus bandanus, Conus marmoreus bandanus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Conus bandanus C.H. Hwass in J.G. Bruguière, 1792 - (CONIDAE)
- marmoreus caerulea, Chiton marmoreus caerulea H.W. Winkley, 1894 - syn of: Tonicella marmorea (Fabrius, 1780) - (CHITONIDAE)
- marmoreus crosseanus, Conus marmoreus crosseanus M. Bernardi, 1861 - (CONIDAE)
- marmoreus crosseanus batarde, Conus marmoreus crosseanus batarde Prigent, 1973 - (CONIDAE)
- marmoreus granulatus, Conus marmoreus granulatus G.B. I Sowerby, 1839 - syn of: Conus marmoreus C. Linnaeus, 1758 - (CONIDAE)
- marmoris, Sonorella odorata marmoris H.A. Pilsbry & J.H. Ferriss, 1919 - (HELMINTHOGLYPTIDAE)
- marmorivaga, Helix marmorivaga J.F. Mabille, 1889 - (HELICIDAE)
- marmorosa, Cochlostyla fictilis marmorosa (P. Bartsch, 1932) - (BRADYBAENIDAE)
- marmorosa, Strophiops marmorosa C.J. Maynard & W.F. Clapp, 1920 - (CERIONIDAE)
- marmorosa, Clathurella marmorosa (L.A. Reeve, 1846) - (CLATHURELLIDAE)
- Marmorostoma, syn of: Subgenus Turbo (Marmarostoma) W.J. Swainson, 1829 (TURBINIDAE)
- marmosa, Olivella marmosa A.A. Olsson & J.T.L. McGinty, 1958 - (OLIVELLIDAE)
- marmouchana, Chondrina marmouchana (P.M. Pallary, 1928) - (CHONDRINIDAE)
- marmouchana, Alabastrina marmouchana (P.M. Pallary, 1933) - (HELICIDAE)
- marnat, Littorina marnat V.L.V. Potiez & A. Michaud, 1838 - syn of: Echinolittorina punctata (J.F. Gmelin, 1791) - (LITTORINIDAE)
- marnayae, Turbonilla marnayae E. Saurin, 1959 - (PYRAMIDELLIDAE)
- marnochi, Turritella marnochi White, 1879 † - (TURRITELLIDAE) (FOSSIL)
- marnochii belviderei, Turritella marnochii belviderei Cragin, 1897 † - syn of: Turritella belviderei (Cragin, 1897 †) - (TURRITELLIDAE) (FOSSIL)
- marnoi, Aspatharia marnoi (C.F. Jickeli, 1874) - (IRIDINIDAE)
- marnyanus, Viviparus marnyanus V.V. Bogachev, 1961 † - (VIVIPARIDAE) (FOSSIL)
- marocana, Rossmaessleria marocana J. Galindo, 2017 - (HELICIDAE)
- marocana, Candidula marocana J. Ahuir, 2014 - (HYGROMIIDAE)
- marocana, Margaritifera marocana P.M. Pallary, 1918 - (MARGARITIFERIDAE)
- marocana, Marginella marocana É.A.A. Locard, 1897 - (MARGINELLIDAE)
- marocana, Melanopsis marocana P.M.A. Morelet, 1853 - syn of: Melanopsis maroccana P.M.A. Morelet, 1853 - (MELANOPSIDAE)
- marocana, Rostellaria marocana G.F. Roch † - syn of: Drepanocheilus marocanus G.F. Roch† - (ROSTELLARIIDAE) (FOSSIL)
- marocana, Sphincterochila marocana P.M. Pallary, 1917 - syn of: Sphincterochila maroccana P.M. Pallary, 1917 - (SPHINCTEROCHILIDAE)
- marocana, Hemithersitea marocana Savornin, 1914 † - (THERSITEIDAE) (FOSSIL)
- marocana, Oestophora marocana (P.M.A. Morelet, 1876) - (TRISSEXODONTIDAE)
- marocana curta, Marginella marocana curta É.A.A. Locard, 1897 - syn of: Marginella marocana É.A.A. Locard, 1897 - (MARGINELLIDAE)
- marocana elongata, Marginella marocana elongata É.A.A. Locard, 1897 - syn of: Marginella marocana É.A.A. Locard, 1897 - (MARGINELLIDAE)
- marocanum, Ptychonema marocanum Horný, 1997 † - (EOTOMARIIDAE) (FOSSIL)
- marocanus, Drepanocheilus marocanus G.F. Roch† - (APORRHAIDAE) (FOSSIL)
- marocanus, Cochlostoma marocanus P.M. Pallary, 1928 - (COCHLOSTOMATIDAE)
- marocanus, Cymbium marocanus P.M. Pallary, 1930 - syn of: Cymbium tritonis (W.J. Broderip, 1830) - (VOLUTIDAE)
- marocanus dilatata, Cymbium marocanus dilatata P.M. Pallary, 1930 - syn of: Cymbium cucumis P.F. Röding, 1798 - (VOLUTIDAE)
- maroccana, Chauvetia maroccana S. Gofas & P.G. Oliver, 2010 - (BUCCINIDAE)
- maroccana, Hydrobia maroccana P.M. Pallary, 1921 - (HYDROBIIDAE)
- maroccana, Lymnaea maroccana P.M. Pallary, 1889 - (LYMNAEIDAE)
- maroccana, Margaritifera maroccana F. Haas, 1940 - syn of: Margaritifera marocana P.M. Pallary, 1918 - (MARGARITIFERIDAE)
- maroccana, Marginella maroccana É.A.A. Locard, 1897 - syn of: Marginella marocana É.A.A. Locard, 1897 - (MARGINELLIDAE)
- maroccana, Melanopsis maroccana P.M.A. Morelet, 1853 - (MELANOPSIDAE)
- maroccana, Melanopsis maroccana J.H. Chemnitz, 1784 - syn of: Melanopsis dufourii (A.E.J. Férussac, 1823) - (MELANOPSIDAE)
- maroccana, Natica maroccana J.H. Chemnitz, 1781 - syn of: Notocochlis chemnitzii (L. Pfeiffer, 1840) - (NATICIDAE)
- maroccana, Nerita maroccana L.W. Dillwyn, 1817 - syn of: Natica marochiensis (J.F. Gmelin, 1791) - (NERITIDAE)
- maroccana, Sphincterochila maroccana P.M. Pallary, 1917 - (SPHINCTEROCHILIDAE)
- maroccana, Hemithersitea maroccana Savornin, 1914 † - syn of: Hemithersitea marocana Savornin, 1914 † - (THERSITEIDAE) (FOSSIL)
- maroccana ampla, Melanopsis maroccana ampla P.M. Pallary, 1920 - (MELANOPSIDAE)
- maroccana conica, Sphincterochila maroccana conica P.M. Pallary, 1926 - (SPHINCTEROCHILIDAE)
- maroccana depressa, Sphincterochila maroccana depressa P.M. Pallary, 1926 - (SPHINCTEROCHILIDAE)
- maroccana fasciolata, Melanopsis maroccana fasciolata J.R. Bourguignat, 1864 - (MELANOPSIDAE)
- maroccana major, Sphincterochila maroccana major P.M. Pallary, 1926 - (SPHINCTEROCHILIDAE)
- maroccana media, Melanopsis maroccana media P.M. Pallary, 1920 - (MELANOPSIDAE)
- maroccana media, Melanopsis maroccana media Blanckenhorn, 1897 - (MELANOPSIDAE)
- maroccana minor, Sphincterochila maroccana minor P.M. Pallary, 1926 - (SPHINCTEROCHILIDAE)
- maroccana saharica, Melanopsis maroccana saharica J.R. Bourguignat, 1880 - syn of: Melanopsis saharica J.R. Bourguignat, 1880 - (MELANOPSIDAE)
- maroccana subangulata, Melanopsis maroccana subangulata P.M. Pallary, 1922 - (MELANOPSIDAE)
- maroccana subgraellsiana, Melanopsis maroccana subgraellsiana J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- maroccana tananensis, Sphincterochila maroccana tananensis P.M. Pallary, 1917 - (SPHINCTEROCHILIDAE)
- maroccana zonata, Melanopsis maroccana zonata J. Gassies, 1856 - (MELANOPSIDAE)
- maroccana zonatosubcostata, Melanopsis maroccana zonatosubcostata A. Paladilhe, 1875 - (MELANOPSIDAE)
- maroccanum, Cerithium maroccanum J.G. Bruguière, 1792 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (CERITHIIDAE)
- maroccanum, Sphaerium maroccanum P.M. Pallary, 1898 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- maroccanum, Pisidium maroccanum P.M. Pallary, 1936 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- maroccanus, Cochlicella maroccanus H.H. Beck - syn of: Cochlicella acuta (O.F. Müller, 1774) - (COCHLICELLIDAE)
- maroccanus, Fusus maroccanus P.F. Röding, 1798 - syn of: Fusinus maroccensis (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- maroccensis, Fusinus maroccensis (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- maroccensis, Murex maroccensis J.F. Gmelin, 1791 - syn of: Fusinus maroccensis (J.F. Gmelin, 1791) - (MURICIDAE)
- Maroccopsis, Genus Maroccopsis M. Ghamizi, 1998 (HYDROBIIDAE)
- Marocella, Genus Marocella Geyer , 1986 (MAROCELLIDAE) (FOSSIL)
- MAROCELLIDAE Topper & al., 2009 - Family (HELCIONELLOIDA-ARCHAEOBRANCHIA [Subclass]-HELCIONELLIFORMES [Order]-HELCIONELLOIDEA [Superfamily]) (FOSSIL)
- marocense, Paracenoceras marocense Miller & Collinson, 1952 † - (PARACENOCERATIDAE) (FOSSIL)
- marocensis, Cinclidonema marocensis Heidelberger & al., 2009 † - (OMPHALOTROCHIDAE) (FOSSIL)
- marochiensis, Natica marochiensis (J.F. Gmelin, 1791) - (NATICIDAE)
- marochiensis, Notocochlis marochiensis J.F. Gmelin, 1791 - syn of: Natica marochiensis (J.F. Gmelin, 1791) - (NATICIDAE)
- marochiensis, Natica marochiensis J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- marochiensis, Nerita marochiensis (J.F. Gmelin, 1791) - syn of: Natica marochiensis (J.F. Gmelin, 1791) - (NERITIDAE)
- marochiensis, Nerita marochiensis J.F. Gmelin, 1791 - syn of: Natica marochiensis (J.F. Gmelin, 1791) - (NERITIDAE)
- maroimensis, Mortoniceras maroimensis (White, 1887 †) - (BRANCOCERATIDAE) (FOSSIL)
- maroimensis, Crassatella maroimensis White, 1887 † - (CRASSATELLIDAE) (FOSSIL)
- Maroinella, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- marojejyae, Parvedentulina marojejyae K.C. Emberton, 2002 - (STREPTAXIDAE)
- marojeziana, Ampelita marojeziana E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ACAVIDAE)
- marojeziana, Ligatella marojeziana E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1993 - (POMATIIDAE)
- marojezianus, Kalidos marojezianus E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- marolti, Harpodactylus marolti H.A. Kollmann, 2009 † - (HARPAGODIDAE) (FOSSIL)
- marondei, Marginellopsis marondei F. Riedel, 2000 - syn of: Pugnus serrei (A.R.J.B. Bavay, 1911) - (MARGINELLIDAE)
- maroskoi, Grandinenia maroskoi J. Grego & M. Szekeres, 2011 - (CLAUSILIIDAE)
- maroskoi, Bythiospeum maroskoi P. Glöer & J. Grego, 2015 - (HYDROBIIDAE)
- maroskoi gigantea, Grandinenia maroskoi gigantea H. Nordsieck, 2012 - (CLAUSILIIDAE)
- marosticum, Cerithium marosticum T.A. de M. Monterosato, 1911 - (CERITHIIDAE)
- marotiriense, Vexillum marotiriense (M. Herrmann & R. Salisbury, 2012) - (COSTELLARIIDAE)
- marotiriense, Costellaria marotiriense M. Herrmann & R. Salisbury, 2012 - syn of: Vexillum marotiriense (M. Herrmann & R. Salisbury, 2012) - (COSTELLARIIDAE)
- marpessa, Chromodoris marpessa L.S.R. Bergh, 1905 - (CHROMODORIDIDAE)
- Marpessa, syn of: Genus Cochlodina A.E.J. Fιrussac, 1821 (CLAUSILIIDAE)
- marplatensis, Crassinella marplatensis Z.J.A. De Castellanos, 1970 - (CRASSATELLIDAE)
- marplatensis, Doris marplatensis G.J. Franceschi, 1928 - syn of: Polycera quadrilineata (O.F. Müller, 1776) - (DORIDIDAE)
- marplatensis, Mactra marplatensis M. Doello-Jurado, 1918 - (MACTRIDAE)
- marplatensis, Turritellopsis marplatensis Z.J.A. De Castellanos & N. Landoni, 1986 - (MATHILDIDAE)
- marplatensis, Polycera marplatensis G.J. Franceschi, 1928 - (POLYCERIDAE)
- marposadica, Palaeomutela marposadica Gusev † - (PALAEOMUTELIDAE) (FOSSIL)
- Marpressa, syn of: Genus Cochlodina A.E.J. Fιrussac, 1821 (CLAUSILIIDAE)
- marquesa, Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa, Columbella marquesa J.S. Gaskoin, 1851 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa, Mitrella marquesa J.S. Gaskoin, 1851 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa, Nassarius marquesa J.S. Gaskoin, 1851 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (NASSARIIDAE)
- marquesa elongata, Columbella marquesa elongata R.P.J. Hervier, 1899 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa flammulata, Columbella marquesa flammulata P. Dautzenberg & J.L. Bouge, 1933 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa sutoris, Columbella marquesa sutoris W. Kobelt, 1897 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesa taeniolata, Columbella marquesa taeniolata W. Kobelt, 1897 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesana, Columbella marquesana J.S. Gaskoin, 1852 - syn of: Metanachis marquesa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- marquesana, Purpuradusta fimbriata marquesana F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- marquesana, Taipidon marquesana (A. Garrett, 1887) - (ENDODONTIDAE)
- marquesana, Peristernia marquesana (A. Adams, 1855) - (FASCIOLARIIDAE)
- marquesana, Troendleina marquesana R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- marquesana, Scabricola marquesana A. Adams, 1853 - syn of: Scabricola variegata (J.F. Gmelin, 1791) - (MITRIDAE)
- marquesana, Acutoliva marquesana E.J. Petuch & D.M. Sargent, 1986 - syn of: Oliva polita F.P. Marrat, 1867 - (OLIVIDAE)
- Marquesana, Subgenus Partula (Marquesana) H.A. Pilsbry, 1909 (PARTULIDAE)
- marquesana, Atrina marquesana P.W. Schultz & M. Huber, 2013 - (PINNIDAE)
- marquesanum, Parvamussium marquesanum H.H. Dijkstra & P. Maestrati, 2008 - (PROPEAMUSSIIDAE)
- marquesanus, Chiton marquesanus H.A. Pilsbry, 1893 - (CHITONIDAE)
- marquesanus, Latirus marquesanus A. Adams, 1855 - syn of: Peristernia marquesana (A. Adams, 1855) - (FASCIOLARIIDAE)
- marquesensis, Crosseola marquesensis Rubio, Rolán & Letourneux, 2017 - (CROSSEOLIDAE)
- marquesensis, Echinolittorina marquesensis D.G. Reid, 2007 - (LITTORINIDAE)
- marquesensis, Eulimella marquesensis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- marquesensis, Syrnola marquesensis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- marquesensis, Mumiola marquesensis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- marquesensis, Parthenina marquesensis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- marquesensis, Oscilla marquesensis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- marquesensis, Iotyrris marquesensis A.V. Sysoev, 2002 - (TURRIDAE)
- marqueti, Impages marqueti (U. Aubry, 1994) - (TEREBRIDAE)
- marquetianus, Obscurella marquetianus A.de Saint-Simon, 1876 - syn of: Cochlostoma nouleti D. Dupuy, 1850 - (COCHLOSTOMATIDAE)
- marquettensis, Drepanocheilus kiowanus marquettensis Stanton, 1947 † - (APORRHAIDAE) (FOSSIL)
- marquezensis, Notocorbula marquezensis Garvie 1996 † - (CORBULIDAE) (FOSSIL)
- marquezensis, Modiolus marquezensis Garvie, 2013 † - (MYTILIDAE) (FOSSIL)
- marquisensis, Calliotropis oros marquisensis C. Vilvens, 2007 - (CALLIOTROPIDAE)
- marradi, Limax marradi unknown - (LIMACIDAE)
- marrae, Columbella marrae E.F. Garcia, 1999 - (COLUMBELLIDAE)
- marrati, Coralliophila marrati J. Knudsen, 1956 - (MURICIDAE)
- marrati, Nassarius marrati E.A. Smith, 1876 - syn of: Nassarius reeveanus (R.W. Dunker, 1847) - (NASSARIIDAE)
- marrati, Miniaceoliva miniacea marrati (C.W. Johnson, 1910) - (OLIVIDAE)
- marraticum, Bouleiceras marraticum Arkell, 1952 † - (HILDOCERATIDAE) (FOSSIL)
- marrecasia, Mortoniceras marrecasia C.J. Maury 1936 † - (BRANCOCERATIDAE) (FOSSIL)
- marri, Ancilla marri Lucovic, 1924 † - (ANCILLARIIDAE) (FOSSIL)
- marri, Murchisonia marri J. Donald, 1895 † - (MURCHISONIIDAE) (FOSSIL)
- marrianae, Margaritifera marrianae R.I. Johnson, 1983 - (MARGARITIFERIDAE)
- marroti, Hoplitoplacenticeras marroti (Coquand, 1859 †) - (PLACENTICERATIDAE) (FOSSIL)
- marrowae, Cinguloterebra marrowae (T. Bratcher & W.O. Cernohorsky, 1982) - (TEREBRIDAE)
- marrowae, Pitar marrowae J.M. Healy & K.L. Lamprell, 1992 - syn of: Pitar laetus (G.S. Poli, 1791) - (VENERIDAE)
- marrowi, Pusia marrowi W.O. Cernohorsky, 1973 - (COSTELLARIIDAE)
- marrowi, Latirus marrowi W.G. Lyons & Snyder, 2015 - (FASCIOLARIIDAE)
- marrowi, Mitra marrowi H. Turner, 2001 - (MITRIDAE)
- marrowi, Sinezona marrowi D.L. Geiger, 2012 - (SCISSURELLIDAE)
- marrowi, Bouchetriphora marrowi B.A. Marshall, 1983 - (TRIPHORIDAE)
- marrsi, Coelostemma marrsi M. Drake, 1951 - syn of: Goniapex freytagi (P. Bartsch, 1950) - (UROCOPTIDAE)
- mars, Orthalicus mars L. Pfeiffer, 1861 - (ORTHALICIDAE)
- mars, Tellina mars S.C.T. Hanley, 1846 - (TELLINIDAE)
- mars decolor, Orthalicus mars decolor H. Strebel, 1882 - syn of: Orthalicus decolor H. Strebel, 1882 - (ORTHALICIDAE)
- marsabensis, Buliminus alepensis marsabensis C.A. Westerlund, 1887 - (ENIDAE)
- marsanensis, Microstilifer marsanensis P. Lozouet, 1998 † - (EULIMIDAE) (FOSSIL)
- marschmidti, Ataphrus marschmidti J. Gründel & A. Kaim, 2006 † - (ATAPHRIDAE) (FOSSIL)
- Marsenia, syn of: Genus Lamellaria G. Montagu, 1815 (VELUTINIDAE)
- Marseniella, Genus Marseniella L.S.R. Bergh, 1886 (VELUTINIDAE)
- Marsenina, Genus Marsenina J.E. Gray, 1850 (VELUTINIDAE)
- Marseniopsis, Genus Marseniopsis L.S.R. Bergh, 1886 (VELUTINIDAE)
- marshae, Dentalium marshae K.L. Lamprell & J.M. Healy, 1998 - syn of: Laevidentalium marshae (K.L. Lamprell & J.M. Healy, 1998) - (DENTALIIDAE)
- marshae, Laevidentalium marshae (K.L. Lamprell & J.M. Healy, 1998) - (LAEVIDENTALIIDAE)
- marshae, Runcina marshae R.F. Burn, 1966 - (RUNCINIDAE)
- marshallae, Euvola marshallae E.J. Petuch & R.F. Myers, 2014 - (PECTINIDAE)
- Marshallaria, Genus Marshallaria Finlay & Marwick, 1937 (PTYCHATRACTIDAE) (FOSSIL)
- Marshallaskeya, syn of: Genus Retilaskeya B.A. Marshall, 1978 (CERITHIOPSIDAE)
- Marshallena, Genus Marshallena J.K. Allan, 1926 (HORAICLAVIDAE)
- marshallense, Nomismoceras marshallense W.J. Gordon, 1964 † - syn of: Arcanoceras furnishi (F.L. Saunders, 1964 †) - (EOGONIOLOBOCERATIDAE) (FOSSIL)
- marshallensis, Assiminea nitida marshallensis R.T. Abbott, 1958 - (ASSIMINEIDAE)
- marshallensis, Diodora marshallensis H.S. Ladd, 1966 † - (FISSURELLIDAE) (FOSSIL)
- marshallensis, Nassarius marshallensis H.S. Ladd, 1977 - syn of: Nassarius celebensis (M.M. Schepman, 1907) - (NASSARIIDAE)
- marshallensis, Chlamys marshallensis T.R. Waller, 1972 - syn of: Laevichlamys wilhelminae (A.R.J.B. Bavay, 1904) - (PECTINIDAE)
- marshallensis, Reynellona marshallensis T. Kase, 1998 - (PICKWORTHIIDAE)
- marshallensis, Plesiotrochus marshallensis H.S. Ladd, 1972 † - (PLESIOTROCHIDAE) (FOSSIL)
- marshallensis, Prolecanites marshallensis (Winchell, 1862 †) - (PROLECANITIDAE) (FOSSIL)
- marshallensis, Rissoina marshallensis H.S. Ladd, 1966 † - (RISSOINIDAE) (FOSSIL)
- marshallensis, Schizochiton marshallensis H.S. Ladd, 1966 † - (SCHIZOCHITONIDAE) (FOSSIL)
- marshallensis, Monilea marshallensis H.S. Ladd, 1966 † - (TROCHIDAE) (FOSSIL)
- marshalli, Superstes marshalli Finlay & J. Marwick, 1937 † - (ACTEONIDAE) (FOSSIL)
- marshalli, Cominella marshalli (C.R. Laws, 1932 †) - (BUCCINIDAE) (FOSSIL)
- marshalli, Enigmaticolus marshalli Fraussen & Stahlschmidt, 2016 - (BUCCINIDAE)
- marshalli, Austrofusus marshalli L. C. King, 1933 † - (BUCCINIDAE) (FOSSIL)
- marshalli, Aeneator marshalli (R. Murdoch, 1924) - (BUCCINIDAE)
- marshalli, Beringius marshalli W.H. Dall, 1919 - (BUCCINIDAE)
- marshalli, Penion marshalli R. Murdoch, 1924 - syn of: Aeneator marshalli (R. Murdoch, 1924) - (BUCCINIDAE)
- marshalli, Siphonorbis marshalli T. Iredale, 1918 - syn of: Colus jeffreysianus (P. Fischer, 1868) - (BUCCINIDAE)
- marshalli, Calliostoma marshalli H.N. Lowe, 1935 - (CALLIOSTOMATIDAE)
- marshalli, Badistes marshalli A. McLauchlan, 1951 - (CAMAENIDAE)
- marshalli, Sinumelon marshalli T. Iredale, 1938 - (CAMAENIDAE)
- marshalli, Admetula marshalli P. Bouchet & R.E. Petit, 2008 - (CANCELLARIIDAE)
- marshalli, Inglisella marshalli (L. Vignal, 1921 †) - (CANCELLARIIDAE) (FOSSIL)
- marshalli, Fusiaphera marshalli (R.S. Allan, 1926 †) - (CANCELLARIIDAE) (FOSSIL)
- marshalli, Pleuromeris marshalli (J. Marwick, 1924) - (CARDITIDAE)
- marshalli, Venericardia marshalli J. Marwick, 1924 - syn of: Pleuromeris marshalli (J. Marwick, 1924) - (CARDITIDAE)
- marshalli, Clathropsis marshalli Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- marshalli, Columbinia marshalli (H.A. Pilsbry, 1926) - (CLAUSILIIDAE)
- marshalli, Eucrassatella marshalli A.W.B. Powell, 1931 † - (CRASSATELLIDAE) (FOSSIL)
- marshalli, Monteleonia marshalli Zinsmeister, 1981 † - (CUCULLAEIDAE) (FOSSIL)
- marshalli, Kidderia marshalli C.A. Fleming, 1948 - (CYAMIIDAE)
- marshalli, Cystiscus marshalli F. Boyer, 2003 - (CYSTISCIDAE)
- marshalli, Diaphana marshalli (E.R. Sykes, 1904) - (DIAPHANIDAE)
- marshalli, Austroclavus marshalli Powell, 1942 † - (DRILLIIDAE) (FOSSIL)
- marshalli, Cirsotrema marshalli C.R. Laws, 1935 † - (EPITONIIDAE) (FOSSIL)
- marshalli, Curveulima marshalli P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- marshalli, Annulobalcis marshalli A. Warén, 1981 - (EULIMIDAE)
- marshalli, Glycymeris marshalli C.R. Laws, 1930 † - (GLYCYMERIDIDAE) (FOSSIL)
- marshalli, Alexogyra marshalli K. Bandel, 1996 † - (HYALOGYRINIDAE) (FOSSIL)
- marshalli, Larocheopsis marshalli P. Lozouet, 1998 † - (LAROCHEIDAE) (FOSSIL)
- marshalli, Choristella marshalli J.H. McLean, 1992 - (LEPETELLIDAE)
- marshalli, Cithna marshalli E.R. Sykes, 1925 - syn of: Iphitus marshalli (E.R. Sykes, 1925) - (LIOTIIDAE)
- marshalli, Nebularia marshalli P. Bartsch, 1931 - syn of: Nebularia muricata (W.J. Broderip, 1836) - (MITRIDAE)
- marshalli, Otapiria marshalli (C.T. Trechmann, 1923 †) - (MONOTIDAE) (FOSSIL)
- marshalli, Leptotrophon marshalli R. Houart, 1995 - (MURICIDAE)
- marshalli, Hirtomurex marshalli M. Oliverio, 2008 - (MURICIDAE)
- marshalli, Timbellus marshalli (R. Houart, 1989) - (MURICIDAE)
- marshalli, Friginatica marshalli J. Marwick, 1931 † - (NATICIDAE) (FOSSIL)
- marshalli, Gothicispira marshalli P.A. Maxwell, 1988 † - (NEWTONIELLIDAE) (FOSSIL)
- marshalli, Nucula marshalli H.G. Schenck, 1939 - (NUCULIDAE)
- marshalli, Iphitus marshalli (E.R. Sykes, 1925) - (NYSTIELLIDAE)
- marshalli, Stylotrochus marshalli E.R. Sykes, 1925 - syn of: Iphitus marshalli (E.R. Sykes, 1925) - (NYSTIELLIDAE)
- marshalli, Thaumeledone marshalli B.J. O'Shea, 1999 - (OCTOPODIDAE)
- marshalli, Homalogyra marshalli E.R. Sykes, 1925 - syn of: Neusas marshalli (E.R. Sykes, 1925) - (OMALOGYRIDAE)
- marshalli, Phyllopachyceras marshalli M. Collignon, 1937 † - syn of: Phyllopachyceras forbesianum (A.V.M.D. D'Orbigny, 1850 †) - (PHYLLOCERATIDAE) (FOSSIL)
- marshalli, Helisoma marshalli H.B. Baker, 1945 - (PLANORBIDAE)
- marshalli, Protorcula marshalli A. Nützel, 1998 † - (PROTORCULIDAE) (FOSSIL)
- marshalli, Provanna marshalli Saether, C. Little & K.A. Campbell, 2010 † - (PROVANNIDAE) (FOSSIL)
- marshalli, Protocalyptraea marshalli A.H. Clarke, 1894 † - (PSEUDOPHORIDAE) (FOSSIL)
- marshalli, Pseudaucella marshalli (C.T. Trechmann, 1923 †) - (PTERIIDAE) (FOSSIL)
- marshalli, Turbonilla marshalli W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- marshalli, Hortia marshalli Y.I. Kantor, P. Lozouet, N. Puillandre & P. Bouchet, 2014 - (PYRAMIMITRIDAE)
- marshalli, Sassia marshalli A.G. Beu, 1978 - syn of: Sassia remensa (T. Iredale, 1936) - (RANELLIDAE)
- marshalli, Pleurotomella marshalli (E.R. Sykes, 1906) - (RAPHITOMIDAE)
- marshalli, Retusa marshalli E.R. Sykes, 1905 - syn of: Diaphana marshalli (E.R. Sykes, 1904) - (RETUSIDAE)
- marshalli, Pusillina marshalli (J. Grant-Mackie & M. Chapman-Smith, 1971 †) - (RISSOIDAE) (FOSSIL)
- marshalli, Scissurella marshalli K. Bandel, 1998 - syn of: Scissurella prendrevillei A.W.B. Powell, 1933 - (SCISSURELLIDAE)
- marshalli, Abra marshalli (Finlay, 1927 †) - (SEMELIDAE) (FOSSIL)
- marshalli, Solariella marshalli (P.A. Maxwell, 1992 †) - (SOLARIELLIDAE) (FOSSIL)
- marshalli, Solemya marshalli Walton, 2015 - (SOLEMYIDAE)
- marshalli, Chondroceras marshalli (McLearn, 1928 †) - (SPHAEROCERATIDAE) (FOSSIL)
- marshalli, Conchothyra marshalli (Trechman, 1917 ) - (STRUTHIOLARIIDAE)
- marshalli, Sororipyrgus marshalli M. Haase, 2008 - (TATEIDAE)
- marshalli, Finlayella marshalli C.A. Fleming, 1950 † - (TELLINIDAE) (FOSSIL)
- marshalli, Neusas marshalli (E.R. Sykes, 1925) - (TORNIDAE)
- marshalli, Erato marshalli J. Marwick, 1929 † - (TRIVIIDAE) (FOSSIL)
- marshalli, Fulgurofusus marshalli M.G. Harasewych, 2011 - (TURBINELLIDAE)
- marshalli, Bolma marshalli (B.H. Thomson, 1908 †) - (TURBINIDAE) (FOSSIL)
- marshalli, Pleurobema marshalli L.S. Frierson, 1927 - (UNIONIDAE)
- marshalli, Micronaias marshalli J.P.E. Morrison, 1943 - syn of: Micronaias granadensis (I. Lea, 1868) - (UNIONIDAE)
- marshalli, Tawera marshalli J. Marwick, 1927 † - (VENERIDAE) (FOSSIL)
- marshalli, Metamelon marshalli J. Marwick, 1926 † - (VOLUTIDAE) (FOSSIL)
- marshalli gemmuloides, Calliostoma marshalli gemmuloides (R.T. Lowe, 1835) - (CALLIOSTOMATIDAE)
- marshalli separabilis, Aeneator marshalli separabilis R.K. Dell, 1956 - (BUCCINIDAE)
- Marshalliella, syn of: Genus Haasica E. Strand, 1932 (MYCETOPODIDAE)
- Marshallites, Genus Marshallites Matsumoto , 1955 (KOSSMATICERATIDAE) (FOSSIL)
- Marshallopsis, Genus Marshallopsis A. Cecalupo & I. Perugia, 2012 (CERITHIOPSIDAE)
- Marshallora, Genus Marshallora P. Bouchet, 1985 (TRIPHORIDAE)
- marshi, Choristoceras marshi J. Von Hauer, 1865 † - (CHORISTOCERATIDAE) (FOSSIL)
- marshi, Lituites marshi J.W. Hall, 1867 † - (LITUITIDAE) (FOSSIL)
- marshi, Tibiella marshi Meyer, 1884 † - (THECOSOMATA (UNASSIGNED)) (FOSSIL)
- marshi, Triphora marshi A.M. Strong & L.G. Hertlein, 1939 - (TRIPHORIDAE)
- marshii, Lopha marshii (Sowerby, 1914 †) - (OSTREIDAE) (FOSSIL)
- marshii, Ostrea marshii Marcou, 1858 † - syn of: Lopha subovata Shumard, 1854 † - (OSTREIDAE) (FOSSIL)
- marshii, Unio marshii B.H. Wright, 1888 - syn of: Elliptio jayensis I. Lea, 1838 - (UNIONIDAE)
- marshiiformis, Ostrea marshiiformis Münster, 1841 † - (OSTREIDAE) (FOSSIL)
- marsi, Conocardium marsi von Schlotheim, 1820 † - syn of: Cardium hystericus von Schlotheim, 1820 † - (CONOCARDIIDAE) (FOSSIL)
- marsi, Hippocardia marsi Oehlert, 1887 † - syn of: Hippocardia hysterica (von Schlotheim, 1820 †) - (HIPPOCARDIIDAE) (FOSSIL)
- marsiana, Xerotricha marsiana G. Servain, 1880 - syn of: Xerotricha apicina (J.B.P.A. Lamarck, 1822) - (HYGROMIIDAE)
- marsicana, Leucostigma candidescens marsicana (N. Tiberi, 1872) - (CLAUSILIIDAE)
- marsilhonensis, Cernuella marsilhonensis J.R. Bourguignat in É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- marstonense, Prionodoceras marstonense Spath, 1935 † - (CARDIOCERATIDAE) (FOSSIL)
- marstonense, Promicroceras marstonense (Spath †) - (EODEROCERATIDAE) (FOSSIL)
- marstonensis, Ringsteadia marstonensis Salfeld, 1917 † - (AULACOSTEPHANIDAE) (FOSSIL)
- marstonensis, Pachypictonia marstonensis (W.J. Arkell, 1947 †) - (PERISPHINCTIDAE) (FOSSIL)
- marstoni, Cavellia marstoni (F.M. Climo, 1969) - (CHAROPIDAE)
- marstoni, Charopa marstoni F.M. Climo, 1969 - syn of: Cavellia marstoni (F.M. Climo, 1969) - (CHAROPIDAE)
- marstoni, Chaenocardiola marstoni Reed, 1931 † - (LUNULICARDIIDAE) (FOSSIL)
- Marstonia, Genus Marstonia F.C. Baker, 1926 (HYDROBIIDAE)
- Marstoniopsis, Genus Marstoniopsis C.O. Van Regteren Altena, 1936 (AMNICOLIDAE)
- marsupiale, Isognomon marsupiale P.F. Röding, 1798 - syn of: Isognomon perna (C. Linnaeus, 1767) - (PTERIIDAE)
- marsupialis, Acar marsupialis P.G. Oliver & A.M. Holmes, 2004 - (ARCIDAE)
- marsupialis, Cavellia marsupialis (A.W.B. Powell, 1941) - (CHAROPIDAE)
- marsupialis, Fectola marsupialis A.W.B. Powell, 1941 - syn of: Cavellia marsupialis (A.W.B. Powell, 1941) - (CHAROPIDAE)
- marsupialis, Endodonta marsupialis H.A. Pilsbry & E.G. Vanatta, 1906 - (ENDODONTIDAE)
- Marsupina, Genus Marsupina W.H. Dall, 1904 (BURSIDAE)
- marsupiobesa, Elliptio marsupiobesa S.L.H. Fuller, 1972 - (UNIONIDAE)
- marsupium, Gomphoceras marsupium Barrande, 1865 † - syn of: Ovocerina marsupium (Barrande, 1865 †) - (DIESTOCERATIDAE) (FOSSIL)
- marsupium, Ovocerina marsupium (Barrande, 1865 †) - (MANDALOCERATIDAE) (FOSSIL)
- marsupium, Perna marsupium J.B.P.A. Lamarck, 1819 - syn of: Isognomon perna (C. Linnaeus, 1767) - (MYTILIDAE)
- marsus, Spectamen marsus B.C. Cotton & F.C. Godfrey, 1938 - (SOLARIELLIDAE)
- Marsyas, syn of: Genus Ellobium P.F. Rφding, 1798 (ELLOBIIDAE)
- Martadoris, Genus Martadoris Willan & Chang, 2017 (POLYCERIDAE)
- martae, Aeneator martae J.F. Araya, 2013 - (BUCCINIDAE)
- martae, Eatonina martae E. Rolán & J. Templado, 1993 - (CINGULOPSIDAE)
- martae, Macedonica martae I. Sajó, 1968 - (CLAUSILIIDAE)
- martae, Agathylla biloba martae Z. Eröss & M. Szekeres, 1999 - (CLAUSILIIDAE)
- martae, Nassarius martae F. Van Dingenen, L. Ceulemans & al., 2015 † - (NASSARIIDAE) (FOSSIL)
- martae, Parthenina martae B.M. Landau & P.I. LaFollette, 2015 - (PYRAMIDELLIDAE)
- martae, Turbonilla martae A. Peñas & E. Rolán, 1997 - (PYRAMIDELLIDAE)
- Martanites, Subgenus Hildaites (Martanites) Sassaroli & Venturi, 2012 (HILDOCERATIDAE) (FOSSIL)
- martanus, Viviparus martanus D. Esu & O. Girotti, 2016 † - (VIVIPARIDAE) (FOSSIL)
- marteli, Callistoplepa marteli (P. Dautzenberg, 1901) - (ACHATINIDAE)
- marteli, Serriphaedusa marteli (P. Dautzenberg, 1915) - (CLAUSILIIDAE)
- marteli, Bistolida marteli P. Dautzenberg, 1903 - syn of: Bistolida hirundo neglecta (J.E. Gray in G.B. II Sowerby, 1832) - (CYPRAEIDAE)
- marteli, Mauronapaeus marteli P.M. Pallary, 1918 - (ENIDAE)
- marteli, Amaea marteli (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- marteli, Martelites marteli Conte, 1989 † - (HETEROCERATIDAE) (FOSSIL)
- marteli, Xerosecta marteli (P.M. Pallary, 1920) - (HYGROMIIDAE)
- marteli, Theodoxus marteli (P.M. Pallary, 1920) - (NERITIDAE)
- marteli, Pseudunela marteli T.P. Neusser, K.M. Jörger & M. Schrödl, 2011 - (PSEUDUNELIDAE)
- marteli, Sphincterochila marteli (P.M. Pallary, 1918) - (SPHINCTEROCHILIDAE)
- marteli, Unio marteli P.M. Pallary, 1916 - syn of: Potomida littoralis (G.L.C.F.D. Cuvier, 1798) - (UNIONIDAE)
- marteli nigra, Theodoxus marteli nigra (P.M. Pallary, 1918) - (NERITIDAE)
- marteli pallescens, Callistoplepa marteli pallescens (P. Dautzenberg, 1901) - (ACHATINIDAE)
- Martelia, Genus Martelia P. Dautzenberg, 1908 (PALUDOMIDAE)
- Martelites, Genus Martelites Conte, 1989 (HETEROCERATIDAE) (FOSSIL)
- martelli, Xerosecta martelli (P.M. Pallary, 1920) - syn of: Xerosecta marteli (P.M. Pallary, 1920) - (HYGROMIIDAE)
- martelli, Melanopsis martelli P.M. Pallary, 1920 - (MELANOPSIDAE)
- martelli, Biradiolites martelli C.F. Parona, 1911 † - (RADIOLITIDAE) (FOSSIL)
- martelli, Unio martelli P.M. Pallary, 1916 - syn of: Potomida littoralis (G.L.C.F.D. Cuvier, 1798) - (UNIONIDAE)
- Martelliella, syn of: Genus Aclis S.L. Lovιn, 1846 (ACLIDIDAE)
- Martensamnicola, Genus Martensamnicola Z.I. Izzatullaev & al, 1985 (HYDROBIIDAE)
- martensi, Partulina mighelsiana martensi F. Borcherding, 1906 - (ACHATINELLIDAE)
- martensi, Pseudachatina martensi A. d'Ailly, 1896 - (ACHATINIDAE)
- martensi, Limicolaria martensi E.C. Von Martens - (ACHATINIDAE)
- martensi, Parmarion martensi H.R. Simroth, 1893 - (ARIOPHANTIDAE)
- martensi, Pseudaneitea martensi (H.H. Suter, 1909) - (ATHORACOPHORIDAE)
- martensi, Bothriembryon martensi W. Kobelt, 1901 - syn of: Bothriembryon rhodostomus (J.E. Gray, 1834) - (BOTHRIEMBRYONTIDAE)
- martensi, Colus martensi (A. Krause, 1885) - (BUCCINIDAE)
- martensi, Meteuthria martensi (H. Strebel, 1905) - (BUCCINIDAE)
- martensi, Bulimus martensi L. Pfeiffer, 1856 - syn of: Lamellaxis martensi (L. Pfeiffer, 1856) - (BULIMULIDAE)
- martensi, Amphidromus martensi O. Böttger, 1894 - (CAMAENIDAE)
- martensi, Strophiops martensi (C.D. Weinland, 1862) - (CERIONIDAE)
- martensi, Bathyptychia martensi H. Nordsieck, 2001 - (CLAUSILIIDAE)
- martensi, Quadriplicata lederi martensi H. Nordsieck, 1983 - (CLAUSILIIDAE)
- martensi, Clavatula martensi H.F. Von Maltzan, 1883 - (CLAVATULIDAE)
- martensi, Zetekina martensi (H.A. Pilsbry, 1935) - (COCHLIOPIDAE)
- martensi, Mitrella martensi (C.E. Lischke, 1871) - (COLUMBELLIDAE)
- martensi, Kioconus martensi (E.A. Smith, 1884) - (CONIDAE)
- martensi, Dentalium martensi M. Boissevain, 1906 - syn of: Compressidentalium subcurvatum (E.A. Smith, 1906) - (DENTALIIDAE)
- martensi, Fissidentalium martensi M. Boissevain, 1906 - syn of: Compressidentalium subcurvatum (E.A. Smith, 1906) - (DENTALIIDAE)
- martensi, Diala sulcifera martensi (A. Issel, 1869) - (DIALIDAE)
- martensi, Palaina martensi (Andreae, 1902) † - (DIPLOMMATINIDAE) (FOSSIL)
- martensi, Palaina martensi (C.B. Adams, 1866) - (DIPLOMMATINIDAE)
- martensi, Acirsa martensi (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- martensi, Acirsa martensi M.E.A. de Boury, 1913 - syn of: Acirsa martensi (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- martensi, Epitonium martensi M.E.A. de Boury, 1913 - syn of: Acirsa martensi (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- martensi, Sulfurina martensi (A. Issel, 1874) - (HELICINIDAE)
- martensi, Clessiniola martensi C.M. Kolesnikov, 1947 - syn of: Turricaspia variabilis (K.E.I. von Eichwald, 1838) - (HYDROBIIDAE)
- martensi, Castalia martensi (H.F.A. von Ihering, 1891) - (HYRIIDAE)
- martensi, Spatha martensi E. Baumann, 1894 - syn of: Chambardia bourguignati (J.R. Bourguignat, 1885) - (IRIDINIDAE)
- martensi, Alaba martensi A. Issel, 1869 - (LITIOPIDAE)
- martensi, Mangelia martensi (H. Strebel, 1905) - (MANGELIIDAE)
- martensi, Ergalatax martensi (M.M. Schepman, 1892) - (MURICIDAE)
- martensi, Morula martensi W.H. Dall, 1923 - syn of: Ergalatax junionae R. Houart, 2008 - (MURICIDAE)
- martensi, Mytilus martensi M. von Neumayr, 1898 - syn of: Limnoperna fortunei (R.W. Dunker, 1857) - (MYTILIDAE)
- martensi, Brachidontes martensi H.F.A. von Ihering, 1897 - syn of: Brachidontes rodriguezii (A.V.M.D. D'Orbigny, 1842) - (MYTILIDAE)
- martensi, Nassa martensi K.H.J. Thiele, 1925 - syn of: Nassarius crematus R.B. Hinds, 1844 - (NASSARIIDAE)
- martensi, Bartschivindex martensi (W. Kobelt, 1912) - (NEOCYCLOTIDAE)
- martensi, Ninnia martensi (Š. Brusina, 1884 †) - (NERITIDAE) (FOSSIL)
- martensi, Spixia martensi (A. Doering, 1875) - (ODONTOSTOMIDAE)
- martensi, Platevindex martensi (H.P. Plate, 1893) - (ONCHIDIIDAE)
- martensi, Oncis martensi H.P. Plate, 1893 - syn of: Platevindex martensi (H.P. Plate, 1893) - (ONCHIDIIDAE)
- martensi, Berthella martensi (H.A. Pilsbry, 1896) - (PLEUROBRANCHIDAE)
- martensi, Gymnotoplax martensi H.A. Pilsbry, 1896 - syn of: Berthella martensi (H.A. Pilsbry, 1896) - (PLEUROBRANCHIDAE)
- martensi, Rolleia martensi H. von Maltzan - (POMATIIDAE)
- martensi, Aartsenia martensi (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- martensi, Dunkeria martensi S. Clessin, 1901 - (PYRAMIDELLIDAE)
- martensi, Odostomia martensi W.H. Dall & P. Bartsch, 1906 - syn of: Aartsenia martensi (W.H. Dall & P. Bartsch, 1906) - (PYRAMIDELLIDAE)
- martensi, Pseudodaphnella martensi (G. Nevill & H. Nevill, 1875) - (RAPHITOMIDAE)
- martensi, Spectamen martensi Herbert, 2015 - (SOLARIELLIDAE)
- martensi, Sphaerium martensi H.A. Pilsbry, 1899 - (SPHAERIIDAE)
- martensi, Spiraxis martensi L. Pfeiffer, 1856 - syn of: Lamellaxis martensi (L. Pfeiffer, 1856) - (SPIRAXIDAE)
- martensi, Ptychotrema martensi (A. d'Ailly, 1897) - (STREPTAXIDAE)
- martensi, Edentulina martensi (E.A. Smith, 1882) - (STREPTAXIDAE)
- martensi, Lamellaxis martensi (L. Pfeiffer, 1856) - (SUBULINIDAE)
- martensi, Bankia martensi (W. Stempell, 1899) - (TEREDINIDAE)
- martensi, Teredo martensi W. Stempell, 1899 - syn of: Bankia martensi (W. Stempell, 1899) - (TEREDINIDAE)
- martensi, Turritella martensi R. Selli, 1973 - syn of: Turritella alba H. Adams, 1872 - (TURRITELLIDAE)
- martensi, Psoronaias martensi L.S. Frierson, 1927 - (UNIONIDAE)
- martensi, Unio martensi H.F.A. von Ihering, 1893 - syn of: Rhipidodonta charruana (A.V.M.D. D'Orbigny, 1835) - (UNIONIDAE)
- martensi, Pseudopotomida martensi I.M. Moskvicheva & Y.I. Starobogatov, 1973 - syn of: Inversidens pantoensis (M. von Neumayr, 1899) - (UNIONIDAE)
- martensi, Trichotoxon martensi (D.F. Heynemann, 1882) - (UROCYCLIDAE)
- martensi, Atoxon martensi H.R. Simroth, 1910 - (UROCYCLIDAE)
- martensi, Semperula martensi (C.G. Semper, 1885) - (VERONICELLIDAE)
- martensi, Filopaludina martensi (G.R. von Frauenfeld, 1865) - (VIVIPARIDAE)
- martensi, Siamopaludina martensi (G.R. von Frauenfeld, 1865) - syn of: Filopaludina martensi (G.R. von Frauenfeld, 1865) - (VIVIPARIDAE)
- martensi, Adelomelon martensi H. Strebel, 1906 - syn of: Adelomelon ancilla martensi (H. Strebel, 1906) - (VOLUTIDAE)
- martensi, Adelomelon ancilla martensi (H. Strebel, 1906) - (VOLUTIDAE)
- martensi, Zonites rhodius martensi G.J. Pfeffer, 1930 - (ZONITIDAE)
- martensi cambodjensis, Filopaludina martensi cambodjensis (J.F. Mabille & G. Le Mesle, 1866) - (VIVIPARIDAE)
- martensi cambodjensis, Siamopaludina martensi cambodjensis (J.F. Mabille & G. Le Mesle, 1866) - syn of: Filopaludina martensi cambodjensis (J.F. Mabille & G. Le Mesle, 1866) - (VIVIPARIDAE)
- martensi cliffordi, Strophiops martensi cliffordi W.J. Clench, 1933 - (CERIONIDAE)
- martensi immersa, Bathyptychia martensi immersa A. Hunyadi & M. Szekeres, 2016 - (CLAUSILIIDAE)
- martensi karagweensis, Limicolaria martensi karagweensis W. Kobelt, 1913 - (ACHATINIDAE)
- martensi laikipiaensis, Limicolaria martensi laikipiaensis H.B. Preston, 1913 - (ACHATINIDAE)
- martensi modestus, Lamellaxis martensi modestus (H. Strebel, 1882) - (SUBULINIDAE)
- martensi munensis, Filopaludina martensi munensis (R.A.M. Brandt, 1974) - (VIVIPARIDAE)
- martensi munensis, Siamopaludina martensi munensis R.A.M. Brandt, 1974 - syn of: Filopaludina martensi munensis (R.A.M. Brandt, 1974) - (VIVIPARIDAE)
- martensi volkensi, Limicolaria martensi volkensi E.C. Von Martens - (ACHATINIDAE)
- Martensia, syn of: Genus Trochonanina A. Mousson, 1869 (UROCYCLIDAE)
- martensiana, Limicolaria martensiana H.B. Preston, 1913 - (ACHATINIDAE)
- martensiana, Aegista martensiana (H.A. Pilsbry, 1901) - (BRADYBAENIDAE)
- martensiana, Euthria martensiana F.W. Hutton, 1878 - (BUCCINIDAE)
- martensiana, Montiphaedusa martensiana (H. Nordsieck, 1973) - (CLAUSILIIDAE)
- martensiana, Dyakia martensiana (L.F.A. Souleyet, 1841) - (DYAKIIDAE)
- martensiana, Asuranena martensiana (E.C. Von Martens, 1874) - (ENIDAE)
- martensiana, Monacha martensiana N. Tiberi, 1869 - (HYGROMIIDAE)
- martensiana, Kobeltocochlea martensiana (W. Dybowski, 1875) - (LITHOGLYPHIDAE)
- martensiana, Nerita martensiana H.A. Pilsbry, 1901 - syn of: Nerita helicinoides martensiana (H.A. Pilsbry, 1901) - (NERITIDAE)
- martensiana, Nerita helicinoides martensiana (H.A. Pilsbry, 1901) - (NERITIDAE)
- martensiana, Partula martensiana H.A. Pilsbry, 1909 - (PARTULIDAE)
- martensiana, Eduardus martensiana (H.A. Pilsbry, 1907) - (POLYGYRIDAE)
- martensiana, Bellardiella martensiana C.M. Tapparone-Canefri, 1883 - (PUPINIDAE)
- martensiana, Lamellaxis martensiana (F.C. Baker, 1927) - (SUBULINIDAE)
- martensiana, Novisuccinea martensiana (G. Nevill, 1878) - (SUCCINEIDAE)
- martensiana, Vitrinella martensiana (L.G. Hertlein & A.M. Strong, 1951) - (TORNIDAE)
- martensiana catharia, Limicolaria martensiana catharia W.H. Dall, 1910 - (ACHATINIDAE)
- martensiana dhaulagirica, Montiphaedusa martensiana dhaulagirica (H. Nordsieck, 1973) - (CLAUSILIIDAE)
- martensiana gigas, Succinea martensiana gigas E.C. Von Martens, 1882 - syn of: Novisuccinea martensiana (G. Nevill, 1878) - (SUCCINEIDAE)
- martensiana olchonensis, Kobeltocochlea martensiana olchonensis W.A. Lindholm, 1909 - syn of: Kobeltocochlea olchonensis W.A. Lindholm, 1909 - (LITHOGLYPHIDAE)
- martensiana pallidistriga, Limicolaria martensiana pallidistriga (E.C. Von Martens, 1895) - (ACHATINIDAE)
- martensianum, Buccinulum vittatum martensianum A.W.B. Powell, 1926 - (BUCCINIDAE)
- martensianum, Cochlostoma gracile martensianum (O.F. von Möllendorff, 1873) - (COCHLOSTOMATIDAE)
- martensianum, Choanopoma martensianum (H.A. Pilsbry, 1900) - (POMATIIDAE)
- martensianus, Mesembrinus recluzianus martensianus H.A. Pilsbry, 1899 - (BULIMULIDAE)
- martensianus, Cyclophorus martensianus O.F. von Möllendorff, 1874 - (CYCLOPHORIDAE)
- martensianus, Mayaxis martensianus (H.A. Pilsbry, 1919) - (SPIRAXIDAE)
- martensianus, Omphalina martensianus (H.A. Pilsbry, 1903) - (ZONITIDAE)
- martensii, Architeuthis martensii F.M. Hilgendorf, 1880 - syn of: Architeuthis dux J.J.S. Steenstrup, 1857 - (ARCHITEUTHIDAE)
- martensii, Arca martensii R.W. Dunker, 1868 - syn of: Arca imbricata J.G. Bruguière, 1789 - (ARCIDAE)
- martensii, Cleodora martensii G.J. Pfeffer, 1880 - syn of: Clio pyramidata C. Linnaeus, 1767 - (CAVOLINIIDAE)
- martensii, Cerithiopsis martensii W.H. Dall, 1881 - syn of: Cerithiopsis martensis W.H. Dall, 1881 - (CERITHIOPSIDAE)
- martensii, Megalophaedusa martensii (E.C. Von Martens, 1860) - (CLAUSILIIDAE)
- martensii, Corbicula martensii S. Clessin, 1879 - syn of: Corbicula japonica T. Prime, 1864 - (CYRENIDAE)
- martensii, Turricaspia martensii (S. Clessin & W. Dybowski in W. Dybowski, 1888) - (HYDROBIIDAE)
- martensii, Megateuthis martensii F.M. Hilgendorf, 1880 - syn of: Architeuthis dux J.J.S. Steenstrup, 1857 - (MEGATEUTHIDIDAE)
- martensii, Cerithiella martensii (W.H. Dall, 1889) - (NEWTONIELLIDAE)
- martensii, Torqueoliva martensii (W.H. Dall, 1903 †) - (OLIVIDAE) (FOSSIL)
- martensii, Pinctada martensii R.W. Dunker, 1872 - syn of: Pinctada imbricata martensii (R.W. Dunker, 1872) - (PTERIIDAE)
- martensii, Pinctada imbricata martensii (R.W. Dunker, 1872) - (PTERIIDAE)
- martensii concrescens, Megalophaedusa martensii concrescens (H.A. Pilsbry, 1908) - (CLAUSILIIDAE)
- martensii reiniana, Megalophaedusa martensii reiniana (W. Kobelt, 1875) - (CLAUSILIIDAE)
- martensii tinctilabris, Megalophaedusa martensii tinctilabris H.A. Pilsbry, 1902 - (CLAUSILIIDAE)
- martensis, Cerithiopsis martensis W.H. Dall, 1881 - (CERITHIOPSIDAE)
- martensis, Geotrochatella martensis (P.V. Gredler, 1884) - (HELICINIDAE)
- martensis, Rhipidodonta martensis L.R.L. Simone, 2006 - syn of: Rhipidodonta charruana (A.V.M.D. D'Orbigny, 1835) - (HYRIIDAE)
- martensis, Poteria martensis (W. Kobelt, 1912) - (NEOCYCLOTIDAE)
- Martensnaias, Subgenus Nephronaias (Martensnaias) L.S. Frierson, 1927 (UNIONIDAE)
- Martesia, Genus Martesia G.B. Sowerby, 1824 (PHOLADIDAE)
- Martesiella, syn of: Genus Martesia G.B. Sowerby, 1824 (PHOLADIDAE)
- martha, Inodrillia martha P. Bartsch, 1943 - (HORAICLAVIDAE)
- Martha, syn of: Genus Helicopsis L.I. Fitzinger, 1833 (HYGROMIIDAE)
- martha, Turbonilla martha K.H.J. Thiele, 1925 - (PYRAMIDELLIDAE)
- marthaae, Naticopsis marthaae Knight, 1933 † - (DELPHINULOPSIDAE) (FOSSIL)
- marthae, Ventrilia marthae A.A. Olsson, 1967 † - (CANCELLARIIDAE) (FOSSIL)
- marthae, Gittenbergia marthae C.M.F. Ancey, 1894 - syn of: Gittenbergia sororcula (L. Benoit, 1859) - (CHONDRINIDAE)
- marthae, Ilyanassa marthae A.A. Olsson, 1967 † - (NASSARIIDAE) (FOSSIL)
- marthae, Solariella marthae F. Kautsky, 1925 † - (SOLARIELLIDAE) (FOSSIL)
- marthae, Tawera marthae J. Marwick, 1928 † - (VENERIDAE) (FOSSIL)
- marthinae, Spiralinella marthinae (I. Nofroni & C.F.C. Schander, 1994) - (PYRAMIDELLIDAE)
- martiae, Crassispira martiae J.H. McLean & L.H. Poorman, 1971 - (PSEUDOMELATOMIDAE)
- martiali, Limatula martiali A. de Rochebrune & J.F. Mabille, 1889 - syn of: Limea pygmaea (R.A. Philippi, 1845) - (LIMIDAE)
- martiali, Limea martiali A. de Rochebrune & J.F. Mabille, 1889 - syn of: Limea pygmaea (R.A. Philippi, 1845) - (LIMIDAE)
- martiali, Nuttallochiton martiali (A. de Rochebrune, 1889) - (MOPALIIDAE)
- martiali, Nuttallochiton martiali A. de Rochebrune in A. de Rochebrune & J.F. Mabille, 1889 - syn of: Nuttallochiton martiali (A. de Rochebrune, 1889) - (MOPALIIDAE)
- Martialia, Genus Martialia A. de Rochebrune & J.F. Mabille, 1889 (OMMASTREPHIDAE)
- martianum, Farcimen wrighti martianum C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- marticensis, Conus marticensis Matheron, 1843 † - (CONIDAE) (FOSSIL)
- marticensis, Melanopsis marticensis Matheron, 1842 † - (MELANOPSIDAE) (FOSSIL)
- marticensis, Monopleura marticensis (Matheron, 1842 †) - (MONOPLEURIDAE) (FOSSIL)
- marticensis, Agriopleura marticensis (A.V.M.D. D'Orbigny, 1847 †) - (RADIOLITIDAE) (FOSSIL)
- marticensis, Requienia marticensis Matheron, 1842 † - syn of: Monopleura marticensis (Matheron, 1842 †) - (REQUIENIIDAE) (FOSSIL)
- Marticia, Genus Marticia Brusina, 1897 (HYDROBIIDAE) (FOSSIL)
- martiensis, Wrightudora recta martiensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- martigena, Ponentina martigena (A.E.J. Férussac, 1832) - (HYGROMIIDAE)
- martigenopsis, Ponentina martigenopsis É.A.A. Locard, 1899 - syn of: Ponentina subvirescens (J.C. Bellamy, 1839) - (HYGROMIIDAE)
- martii, Triphora martii E. Rolán & R. Fernández-Garcés, 1995 - (TRIPHORIDAE)
- martii, Tetrentodon martii C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- martillense, Chondropometes vignalense martillense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- martillensis, Chondrothyretes cerina martillensis M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- martinae, Gibberula martinae T. Cossignani, 2001 - (CYSTISCIDAE)
- martinae, Tingitana martinae T. Cossignani & J. Ahuir, 2012 - (HELICIDAE)
- martinae, Megastomia martinae (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- martinae, Bolma martinae K. Kreipl & A. Alf, 2005 - (TURBINIDAE)
- martinatiana, Helix martinatiana F.E. De Betta, 1852 - syn of: Kosicia ambrosi (P. von Ströbel, 1851) - (HELICIDAE)
- Martinea, syn of: Genus Scrobicularia H.C.F. Schumacher, 1815 (SCROBICULARIIDAE)
- Martinella, Genus Martinella F.P. Jousseaume, 1887 (STREPTAXIDAE)
- martinelli, Delclosia martinelli Rabada, 1993 † - (HAMINOEIDAE) (FOSSIL)
- martinelli, Ischnochiton martinelli Angelo & al., 2004 † - (ISCHNOCHITONIDAE) (FOSSIL)
- martinelli, Nassarius martinelli C. Gili, 1992 † - (NASSARIIDAE) (FOSSIL)
- martinensis, Ophiodermella martinensis W.H. Dall, 1919 - syn of: Ophiodermella grippi (W.H. Dall, 1919) - (BORSONIIDAE)
- martinensis, Crassinella martinensis D'Orbigny, 1842 - syn of: Crassinella martinicensis (A.V.M.D. D'Orbigny, 1853) - (CRASSATELLIDAE)
- martinensis, Chondropoma crenulatum martinensis H.E. Coomans, 1967 - (POMATIIDAE)
- martinensis, Odostomia martinensis A.M. Strong, 1938 - (PYRAMIDELLIDAE)
- martinensis, Straparollina martinensis Rohr, 1996 † - (STRAPAROLLINIDAE) (FOSSIL)
- martinensis, Torrecoptis martinensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- martinetanus, Pterynotus martinetanus (P.F. Röding, 1798) - (MURICIDAE)
- martinetanus, Pterymarchia martinetanus (P.F. Röding, 1798) - syn of: Pterynotus martinetanus (P.F. Röding, 1798) - (MURICIDAE)
- martinezae, Hammatoceras martinezae Kovács 2009 † - (HAMMATOCERATIDAE) (FOSSIL)
- martinezae, Helodiamea martinezae Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- martinezensis, Amauropsis martinezensis R.E. Dickerson, 1914 † - (NATICIDAE) (FOSSIL)
- martinezensis, Mesalia martinezensis W.M. Gabb, 1869 † - (TURRITELLIDAE) (FOSSIL)
- martinezi, Pomacea martinezi J.G. Hidalgo, 1866 - syn of: Pomacea columellaris (A.A. Gould, 1848) - (AMPULLARIIDAE)
- martinezi, Bostryx martinezi M.I. Hylton-Scott, 1965 - (BULIMULIDAE)
- martinezi, Habroconus martinezi (J.G. Hidalgo, 1869) - (EUCONULIDAE)
- martinezi, Fusinus martinezi O. Macsotay & B. Campos, 2001 - (FASCIOLARIIDAE)
- martinezi, Nassarius martinezi H.H. Kool & J. Galindo, 2014 - (NASSARIIDAE)
- martinezi, Buckleyia martinezi (J.G. Hidalgo, 1866) - (NEOCYCLOTIDAE)
- martinezi, Microceramus martinezi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- martinezi, Centralia martinezi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- martinezi, Cochlodinella martinezi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- martinezortii, Turbonilla martinezortii A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- martingaiteae, Gibberula martingaiteae J.A. Ortea, 2015 - (CYSTISCIDAE)
- martingrossi, Pseudidyla martingrossi M. Harzhauser & E.E. Binder, 2008 † - (CLAUSILIIDAE) (FOSSIL)
- martini, Alastega martini Hoare & Pojeta Jr., 2006 † - (ALASTEGIIDAE) (FOSSIL)
- martini, Pachycrommium martini C. Beets, 1941 † - (AMPULLINIDAE) (FOSSIL)
- martini, Ancilla martini J.J. Tesch, 1915 † - (ANCILLARIIDAE) (FOSSIL)
- martini, Drepanochilus martini L.W. Stephenson, 1941 † - syn of: Anchura abrupta T.A. Conrad, 1860 † - (APORRHAIDAE) (FOSSIL)
- martini, Barbatia martini R.W. Dunker, 1866 - (ARCIDAE)
- martini, Arca martini P.F. Röding, 1798 - syn of: Nuculana pernula (O.F. Müller, 1779) - (ARCIDAE)
- martini, Fictonoba carnosa martini (H.J. Finlay, 1928) - (BARLEEIIDAE)
- martini, Metula martini E.W. Vredenburg, 1925 † - (BUCCINIDAE) (FOSSIL)
- martini, Ganesella martini C.H. Oostingh, 1935 † - (CAMAENIDAE) (FOSSIL)
- martini, Bivetia martini A.E.M. Cossmann, 1899 † - (CANCELLARIIDAE) (FOSSIL)
- martini, Cardilia martini G.P. Deshayes, 1844 - (CARDILIIDAE)
- martini, Venericardia martini J. Marwick, 1928 † - syn of: Purpurocardia titirangiensis (J. Marwick, 1943 †) - (CARDITIDAE) (FOSSIL)
- martini, Horologica martini M. Jay & J. Drivas, 2002 - (CERITHIOPSIDAE)
- martini, Sphaerocladiscites martini (Smith, 1927 †) - (CLADISCITIDAE) (FOSSIL)
- martini, Clathurella martini E.W. Vredenburg, 1921 † - (CLATHURELLIDAE) (FOSSIL)
- martini, Phasmoconus martini Shuto, 1969 † - (CONIDAE) (FOSSIL)
- martini, Conus martini J. Wanner & M.J. Hahn, 1935 † - syn of: Conus dingleanus C. Beets, 1984 † - (CONIDAE) (FOSSIL)
- martini, Vexillum martini M.M. Schepman, 1912 - syn of: Vexillum mutabile (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- martini, Notadusta martini (M.M. Schepman, 1907) - (CYPRAEIDAE)
- martini, Epicheloniceras martini (Orbigny †) - (DOUVILLEICERATIDAE) (FOSSIL)
- martini, Polygona martini (M.A. Snyder, 1988) - (FASCIOLARIIDAE)
- martini, Cadulus martini V. Scarabino, 1995 - syn of: Cadulus scarabinoi G. Steiner & A. Kabat, 2004 - (GADILIDAE)
- martini, Glycymeris martini Finlay, 1927 - (GLYCYMERIDIDAE)
- martini, Pyrgula martini P.S. Pavlovic, 1932 † - (HYDROBIIDAE) (FOSSIL)
- martini, Parainoceramya martini (Speden, 1970 †) - (INOCERAMIDAE) (FOSSIL)
- martini, Lima martini Smith, 1927 † - (LIMIDAE) (FOSSIL)
- martini, Prunum martini (S.A.A. Petit De La Saussaye, 1853) - (MARGINELLIDAE)
- martini, Volvarina martini J. Espinosa, J.A. Ortea & L. Moro, 2010 - (MARGINELLIDAE)
- martini, Marginella martini S.A.A. Petit De La Saussaye, 1853 - syn of: Prunum martini (S.A.A. Petit De La Saussaye, 1853) - (MARGINELLIDAE)
- martini, Scabricola martini G.T. Poppe & S.P. Tagaro, 2006 - (MITRIDAE)
- martini, Mitra martini R.A. Philippi, 1887 † - (MITRIDAE) (FOSSIL)
- martini, Modiolopsis martini Reed, 1905 † - (MODIOMORPHIDAE) (FOSSIL)
- martini, Favartia martini (T. Shikama, 1977) - (MURICIDAE)
- martini, Murexiella martini T. Shikama, 1977 - syn of: Favartia martini (T. Shikama, 1977) - (MURICIDAE)
- martini, Modiolus martini M.M. Schepman, 1891 - (MYTILIDAE)
- martini, Neoicoceras martini Nassichuk, 1975 † - (NEOICOCERATIDAE) (FOSSIL)
- martini, Neritina martini R.E. Dickerson, 1915 † - (NERITIDAE) (FOSSIL)
- martini, Nuculana martini P.F. Röding, 1798 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- martini, Nucula martini Finlay, 1927 † - (NUCULIDAE) (FOSSIL)
- martini, Crenavolva martini D. Fehse, 1999 - (OVULIDAE)
- martini, Paracrostoma martini F. Köhler & M. Glaubrecht, 2007 - (PACHYCHILIDAE)
- martini, Christitys martini W.P. Popenoe & Saul, 1987 † - (PERISSITYIDAE) (FOSSIL)
- martini, Pholadomya martini Forbes † - (PHOLADOMYIDAE) (FOSSIL)
- martini, Tricula martini Surya Rao, 1928 - (POMATIOPSIDAE)
- martini, Pyrgiscus martini E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- martini, Buccinaria martini (E.J. Koperberg, 1931) - (RAPHITOMIDAE)
- martini, Varicospira martini (A. Pannekoek, 1936 †) - (ROSTELLARIIDAE) (FOSSIL)
- martini, Iniskinites martini (Imlay, 1953 †) - (SPHAEROCERATIDAE) (FOSSIL)
- martini, Terebra martini E.W. Vredenburg, 1921 † - (TEREBRIDAE) (FOSSIL)
- martini, Tarebia martini (C.H. Oostingh, 1935 †) - (THIARIDAE) (FOSSIL)
- martini, Melania martini M.M. Schepman, 1898 - syn of: Sulcospira testudinaria (von dem Busch in R.A. Philippi, 1842) - (THIARIDAE)
- martini, Melanoides martini C.H. Oostingh, 1935 † - syn of: Tarebia martini (C.H. Oostingh, 1935 †) - (THIARIDAE) (FOSSIL)
- martini, Pseudostomatella martini G.T. Poppe, S.P. Tagaro & H. Dekker, 2006 - (TROCHIDAE)
- martini, Trochus martini J. Smith, 1839 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (TROCHIDAE)
- martini, Clelandella martini T. Brown, 1827 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (TROCHIDAE)
- martini, Kheraiceras martini Imlay, 1953 † - syn of: Iniskinites magniformus (Imlay, 1953 †) - (TULITIDAE) (FOSSIL)
- martini, Mangkalia martini C. Beets, 1941 † - (TURBINELLIDAE) (FOSSIL)
- martini, Javaclavus martini T. Shuto, 1980 † - (TURRIDAE) (FOSSIL)
- martini, Gemmula martini (J.J. Tesch, 1915) - (TURRIDAE)
- martini, Turritella martini A.E.M. Cossmann, 1913 † - (TURRITELLIDAE) (FOSSIL)
- martini, Hypophiceras martini Trumpy, 1969 † - (XENODISCIDAE) (FOSSIL)
- martini flammulata, Melania martini flammulata M.M. Schepman, 1898 - syn of: Sulcospira testudinaria (von dem Busch in R.A. Philippi, 1842) - (THIARIDAE)
- martini superstes, Notadusta martini superstes (F.A. Schilder, 1930) - (CYPRAEIDAE)
- Martinia, syn of: Genus Melanopsis A.E.J. Fιrussac, 1807 (MELANOPSIDAE)
- martiniana, Cantharus martiniana Noetling, 1901 † - (BUCCINIDAE) (FOSSIL)
- martiniana, Erosaria martiniana H.E. Anton, 1839 - syn of: Erosaria gangranosa (L.W. Dillwyn, 1817) - (CYPRAEIDAE)
- martiniana, Helix martiniana L. Pfeiffer, 1845 - syn of: Pleurodonte peracutissimus C.B. Adams, 1845 - (HELICIDAE)
- martiniana, Melanopsis martiniana A.E.J. Férussac, 1823 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martiniana, Mitra martiniana K.T. Menke, 1829 - syn of: Nebularia ferruginea (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- martiniana, Drupa martiniana H.E. Anton, 1839 - syn of: Drupella cornus (P.F. Röding, 1798) - (MURICIDAE)
- martiniana, Tindaria martiniana W.H. Dall, 1916 - syn of: Tindaria kennerlyi W.H. Dall, 1916 - (TINDARIIDAE)
- martiniana, Sterkia calamitosa martiniana H.A. Pilsbry, 1927 - (VERTIGINIDAE)
- martiniana accedens, Martinia martiniana accedens Handmann, 1887 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martiniana arakanensis, Cantharus martiniana arakanensis E.W. Vredenburg, 1923 - (BUCCINIDAE)
- martiniana extensa, Martinia martiniana extensa Handmann, 1887 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martiniana italica, Melanopsis martiniana italica C.L.F. von Sandberger, 1872 † - syn of: Melanopsis narzolina d'Archiac in Viquesnel, 1846 † - (MELANOPSIDAE) (FOSSIL)
- martiniana proclivis, Martinia martiniana proclivis Handmann, 1887 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martiniana propinqua, Martinia martiniana propinqua Handmann, 1887 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martiniana spatiosa, Martinia martiniana spatiosa Handmann, 1887 † - syn of: Melanopsis fossilis (J.F. Gmelin, 1791 †) - (MELANOPSIDAE) (FOSSIL)
- martinianum, Cerithium martinianum L. Pfeiffer, 1840 - syn of: Rhinoclavis fasciata (J.G. Bruguière, 1792) - (CERITHIIDAE)
- martinianum, Cymatium martinianum D'Orbigny, 1847 - syn of: Monoplex pilearis martinianum D'Orbigny, 1846 - (RANELLIDAE)
- martinianum, Monoplex pilearis martinianum D'Orbigny, 1846 - (RANELLIDAE)
- martinianus, Cerion martinianus H.C. Küster, 1844 - (CERIONIDAE)
- martinianus, Conus martinianus L.A. Reeve, 1844 - syn of: Phasmoconus radiatus (J.F. Gmelin, 1791) - (CONIDAE)
- martinianus, Limax martinianus J.R. Bourguignat, 1869 - (LIMACIDAE)
- martinianus, Murex martinianus L.A. Reeve, 1845 - syn of: Murex trapa P.F. Röding, 1798 - (MURICIDAE)
- martinianus, Murex martinianus L. Pfeiffer, 1840 - syn of: Pterynotus alatus (P.F. Röding, 1798) - (MURICIDAE)
- martinicaensis, Volvarina martinicaensis J. Espinosa & J.A. Ortea, 2013 - (MARGINELLIDAE)
- martinicanus, Conus martinicanus C.H. Hwass in J.G. Bruguière, 1792 - syn of: Tenorioconus cedonulli (C. Linnaeus, 1767) - (CONIDAE)
- martinicensis, Bulimus martinicensis L. Pfeiffer, 1846 - syn of: Protoglyptus martinicensis (L. Pfeiffer, 1846) - (BULIMULIDAE)
- martinicensis, Anachis martinicensis (J. Pelorce, 2013) - (COLUMBELLIDAE)
- martinicensis, Costoanachis martinicensis J. Pelorce, 2013 - syn of: Anachis martinicensis (J. Pelorce, 2013) - (COLUMBELLIDAE)
- martinicensis, Leptoconus martinicensis Cossmann, 1913 † - (CONIDAE) (FOSSIL)
- martinicensis, Crassinella martinicensis (A.V.M.D. D'Orbigny, 1853) - (CRASSATELLIDAE)
- martinicensis, Incerticyclus martinicensis (R.J. Shuttleworth, 1857) - (NEOCYCLOTIDAE)
- martinicensis, Protoglyptus martinicensis (L. Pfeiffer, 1846) - (ORTHALICIDAE)
- martinicensis, Tellina martinicensis D'Orbigny, 1853 - (TELLINIDAE)
- martinicensis, Merisca martinicensis L.G. Hertlein & A.M. Strong, 1949 - syn of: Tellina martinicensis D'Orbigny, 1853 - (TELLINIDAE)
- martinicensis, Hespererato martinicensis F.A. Schilder, 1933 - (TRIVIIDAE)
- martinida, Guestieria martinida F.P. Jousseaume, 1887 - (SCOLODONTIDAE)
- martinidella, Mayabina martinidella (F.P. Jousseaume, 1887) - (PHYSIDAE)
- Martinidiscus, Genus Martinidiscus Frύda, 2004 (PORCELLIIDAE) (FOSSIL)
- Martiniella, syn of: Subgenus Nematurella (Martinietta) Schlickum, 1974 (HYDROBIIDAE) (FOSSIL)
- Martinietta, Subgenus Nematurella (Martinietta) Schlickum, 1974 (HYDROBIIDAE) (FOSSIL)
- martinii, Angaria martinii A. Adams, 1854 - syn of: Angaria delphinus (C. Linnaeus, 1758) - (ANGARIIDAE)
- martinii, Arca martinii C.A. Récluz, 1852 - syn of: Eontia bisulcata (J.B.P.A. Lamarck, 1819) - (ARCIDAE)
- martinii, Amaea martinii (W. Wood, 1828) - (EPITONIIDAE)
- martinii, Variciscala martinii W. Wood, 1828 - syn of: Amaea martinii (W. Wood, 1828) - (EPITONIIDAE)
- martinii, Melanella martinii (A. Adams in G.B. II Sowerby, 1854) - (EULIMIDAE)
- martinii, Eulima martinii A. Adams in G.B. II Sowerby, 1854 - syn of: Melanella martinii (A. Adams in G.B. II Sowerby, 1854) - (EULIMIDAE)
- martinii, Triptychia martinii Schnabel, 2007 † - (FILHOLIIDAE) (FOSSIL)
- martinii, Bullia martinii J.E. Gray, 1843 - (NASSARIIDAE)
- martinii, Oliva tigridella martinii P. Dautzenberg, 1927 - (OLIVIDAE)
- martinii, Cyclostoma martinii G.P. Deshayes, 1864 - (POMATIIDAE)
- martinii, Rostellariella martinii (F.P. Marrat, 1877) - (ROSTELLARIIDAE)
- martinii, Tibia martinii F.P. Marrat, 1877 - syn of: Rostellariella martinii (F.P. Marrat, 1877) - (ROSTELLARIIDAE)
- martinii, Semele martinii (L.A. Reeve, 1853) - (SEMELIDAE)
- martinitana, Murex martinitana (P.F. Röding, 1798) - syn of: Pterynotus martinetanus (P.F. Röding, 1798) - (MURICIDAE)
- martinoi, Aeolidia martinoi J.B. Vérany, 1846 - (AEOLIDIIDAE)
- martinorum, Costapex martinorum (W.O. Cernohorsky, 1986) - (COSTELLARIIDAE)
- martinorum, Granulifusus martinorum (W.O. Cernohorsky, 1987) - (FASCIOLARIIDAE)
- martinoti, Pseudomoutoniceras martinoti J.J. Vermeulen & al., 2012 † - (CRIOCERATITIDAE) (FOSSIL)
- martinovici, Succinella martinovici Š. Brusina, 1902 † - (SUCCINEIDAE) (FOSSIL)
- martinshugari, Conus martinshugari E.J. Petuch, 1994 † - (CONIDAE) (FOSSIL)
- martinshugari, Phyllonotus martinshugari E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- martinshugari, Hystrivasum martinshugari E.J. Petuch, 1994 † - (TURBINELLIDAE) (FOSSIL)
- martinshugari, Scaphella martinshugari E.J. Petuch, 1994 † - (VOLUTIDAE) (FOSSIL)
- martinsi, Rugacrioceras martinsi (Reynes, 1876 †) - (MACROSCAPHITIDAE) (FOSSIL)
- martinsi, Manzonia martinsi S.P. Ávila & J. Cordeiro, 2014 - (RISSOIDAE)
- martinsi, Thalotia martinsi d'Archaic, 1850 † - (TROCHIDAE) (FOSSIL)
- martinsini, Acantholytoceras martinsini Reynes, 1876 † - syn of: Rugacrioceras martinsi (Reynes, 1876 †) - (MACROSCAPHITIDAE) (FOSSIL)
- martinssoni, Salpingostoma martinssoni Peel, 1991 † - (BUCANIIDAE) (FOSSIL)
- Martirelix, Subgenus Greggelix (Martirelix) W.B. Miller, 1982 (HELMINTHOGLYPTIDAE)
- martis, Opalia martis (K.H.J. Thiele, 1925) - (EPITONIIDAE)
- martis, Epitonium martis K.H.J. Thiele, 1925 - syn of: Opalia martis (K.H.J. Thiele, 1925) - (EPITONIIDAE)
- martiusi, Leptosphinctes martiusi Buckman † - (PERISPHINCTIDAE) (FOSSIL)
- martiusii, Vermisphinctes martiusii (A.V.M.D. D'Orbigny, 1845 †) - (PERISPHINCTIDAE) (FOSSIL)
- Martoceras, Genus Martoceras Toumansky , 1938 (NEOSTACHEOCERATIDAE) (FOSSIL)
- martodjojoi, Cardiella martodjojoi Glenister & Furnish, 1987 † - (MARATHONITIDAE) (FOSSIL)
- Martolites, Genus Martolites Diener, 1906 (EPISCULITIDAE) (FOSSIL)
- martorelli, Cochlostoma martorelli (G. Servain, 1880) - (COCHLOSTOMATIDAE)
- martorelli, Trichia martorelli J.R. Bourguignat, 1870 - (HYGROMIIDAE)
- martorelli, Jolya martorelli (J.G. Hidalgo, 1878) - (MYTILIDAE)
- martorelli, Modiolus martorelli J.G. Hidalgo, 1878 - syn of: Jolya martorelli (J.G. Hidalgo, 1878) - (MYTILIDAE)
- martorelli, Costatella martorelli G. Servain, 1880 - syn of: Physella acuta (J.P.R. Draparnaud, 1805) - (PHYSIDAE)
- martorelli esseranum, Cochlostoma martorelli esseranum (P. Fagot, 1887) - (COCHLOSTOMATIDAE)
- martorelli montsiccianum, Cochlostoma martorelli montsiccianum (A. Bofill, 1890) - (COCHLOSTOMATIDAE)
- martybealsi, Mauritia maculifera martybealsi F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- martybealsi, Triviella martybealsi D. Fehse, 2016 - (TRIVIIDAE)
- martyi, Annbactroceras martyi (Thoral, 1935 †) - (BALTOCERATIDAE) (FOSSIL)
- martyi, Laevidentalium martyi K.L. Lamprell & J.M. Healy, 1998 - (LAEVIDENTALIIDAE)
- martyni, Carditellopsis martyni P.G. Oliver & H.C.G. Chesney, 1997 - (CARDITIDAE)
- martyni, Falsicingula martyni (W.H. Dall, 1886) - (FALSICINGULIDAE)
- martyni, Boreocingula martyni (W.H. Dall, 1886) - (RISSOIDAE)
- martyni scipio, Boreocingula martyni scipio W.H. Dall, 1887 - syn of: Cingula scipio W.H. Dall, 1887 - (RISSOIDAE)
- martynjordani, Melanella martynjordani (H.K. Jordan, 1895) - (EULIMIDAE)
- martynovi, Chondrula tridens martynovi N. Gural-Sverlova & R.I. Gural, 2010 - (ENIDAE)
- martynovi, Helicopsis martynovi N. Gural-Sverlova, 2010 - (HYGROMIIDAE)
- martynovi, Pontohedyle martynovi K.M. Jörger & M. Schrödl, 2013 - (PARHEDYLIDAE)
- martyr, Cirsotrema martyr (T. Iredale, 1936) - (EPITONIIDAE)
- martyria, Typhis martyria W.H. Dall, 1902 - syn of: Typhisopsis coronatus (W.J. Broderip, 1833) - (MURICIDAE)
- martyria, Megayoldia martyria W.H. Dall, 1897 - (YOLDIIDAE)
- maru, Kaloplocamus maru Y. Vallès & T.M. Gosliner, 2006 - (POLYCERIDAE)
- maruccina, Helix maruccina N. Tiberi, 1878 - syn of: Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- marujamensis, Arenomya marujamensis L.S. Zhidkova, 1994 † - (MYIDAE) (FOSSIL)
- marujamensis, Acila marujamensis Ilyina, 1957 † - syn of: Truncacila cobboldae (J. de C. Sowerby, 1817 †) - (NUCULIDAE) (FOSSIL)
- marukawai, Antalis marukawai (Y. Otuka, 1933) - (DENTALIIDAE)
- marulici, Pyrgula marulici Š. Brusina, 1902 † - (HYDROBIIDAE) (FOSSIL)
- marullensis, Platymya marullensis (A.V.M.D. D'Orbigny, 1844 †) - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- marullensis, Anatina marullensis d'Orbigny, 1844 † - syn of: Platymya marullensis (A.V.M.D. D'Orbigny, 1844 †) - (MACTRIDAE) (FOSSIL)
- marumai, Babelomurex marumai (T. Habe & S. Kosuge, 1970) - (MURICIDAE)
- marut, Kossmatella marut F. Stoliczka, 1865 † - (TETRAGONITIDAE) (FOSSIL)
- Maruyamaceras, syn of: Genus Polydesmia Lorenz, 1906 (POLYDESMIIDAE) (FOSSIL)
- Maruyamacerina, syn of: Genus Polydesmia Lorenz, 1906 (POLYDESMIIDAE) (FOSSIL)
- maruyamense, Ciliatocardium ciliatum maruyamense A.I. Kafanov & Savizky, 1982 † - (CARDIIDAE) (FOSSIL)
- Marvacrassatella, Genus Marvacrassatella Ward & Blackwelder, 1987 (CRASSATELLIDAE) (FOSSIL)
- Marvacrassatella, syn of: Genus Eucrassatella T. Iredale, 1924 (CRASSATELLIDAE)
- marvinwelleri, Aclisina marvinwelleri Thein & Nitecki, 1974 † - syn of: Hypergonia illinoiensis Weller, 1916 † - (MURCHISONIIDAE) (FOSSIL)
- marvinwelleri, Orthonema marvinwelleri Knight, 1934 † - (ORTHONEMATIDAE) (FOSSIL)
- marvinwelleri, Hypergonia marvinwelleri Thein & Nitecki, 1974 † - (ORTHONEMIDAE) (FOSSIL)
- marvinwelleri, Palaeostylus marvinwelleri Knight, 1930 † - (PALAEOSTYLIDAE) (FOSSIL)
- marvinwelleri, Pseudozygopleura marvinwelleri Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- marviva, Melanella marviva J. Espinosa, J.A. Ortea & J. Magaña, 2006 - (EULIMIDAE)
- Marwickara, Genus Marwickara Laws, 1935 (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- marwicki, Cryptoconchus marwicki C.E.R. Bucknill, 1928 † - (ACANTHOCHITONIDAE) (FOSSIL)
- marwicki, Granosolarium marwicki (R.S. Allan, 1926 †) - (ARCHITECTONICIDAE) (FOSSIL)
- marwicki, Atomodesma marwicki C.O. Waterhouse, 1958 † - (ATOMODESMATIDAE) (FOSSIL)
- marwicki, Awateria marwicki A.W.B. Powell, 1942 † - (BORSONIIDAE) (FOSSIL)
- marwicki, Austrofusus marwicki L. C. King, 1933 † - (BUCCINIDAE) (FOSSIL)
- marwicki, Penion marwicki Finlay, 1930 † - (BUCCINIDAE) (FOSSIL)
- marwicki, Buccinulum marwicki H.J. Finlay, 1928 - syn of: Buccinulum pertinax (E.C. Von Martens, 1878) - (BUCCINIDAE)
- marwicki, Fautor marwicki (Finlay, 1923 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- marwicki, Inglisella marwicki (R.K. Dell, 1956) - (CANCELLARIIDAE)
- marwicki, Titanocardium marwicki P.A. Maxwell, 1978 † - (CARDIIDAE) (FOSSIL)
- marwicki, Pratulum marwicki (A.G. Beu & P.A. Maxwell, 1990 †) - (CARDIIDAE) (FOSSIL)
- marwicki, Cardita marwicki C.R. Laws, 1944 † - (CARDITIDAE) (FOSSIL)
- marwicki, Semicassis marwicki (C.A. Fleming, 1943 †) - (CASSIDAE) (FOSSIL)
- marwicki, Glycymerita marwicki (A. Matsukuma & J. Grant-Mackie, 1979 †) - (GLYCYMERIDIDAE) (FOSSIL)
- marwicki, Lahillia marwicki (Freneix 1958) † - (LAHILLIDAE) (FOSSIL)
- marwicki, Limaria marwicki A.W.B. Powell, 1926 - syn of: Limaria orientalis (A. Adams & L.A. Reeve, 1850) - (LIMIDAE)
- marwicki, Limopsis marwicki Powell, 1938 † - (LIMOPSIDAE) (FOSSIL)
- marwicki, Mactra marwicki A.G. Beu, 2006 † - (MACTRIDAE) (FOSSIL)
- marwicki, Heterocithara marwicki P.A. Maxwell, 1988 † - (MANGELIIDAE) (FOSSIL)
- marwicki, Fusiguraleus marwicki (A.W.B. Powell, 1942 †) - (MANGELIIDAE) (FOSSIL)
- marwicki, Serrata marwicki (Finlay, 1927 †) - (MARGINELLIDAE) (FOSSIL)
- marwicki, Mathilda marwicki (P.A. Maxwell, 1966 †) - (MATHILDIDAE) (FOSSIL)
- marwicki, Eomonotis marwicki J. Grant-Mackie, 1980 † - (MONOTIDAE) (FOSSIL)
- marwicki, Murexsul marwicki P.A. Maxwell, 1971 † - (MURICIDAE) (FOSSIL)
- marwicki, Uttleya marwicki A.W.B. Powell, 1952 - (MURICIDAE)
- marwicki, Sinum marwicki C.R. Laws, 1930 † - (NATICIDAE) (FOSSIL)
- marwicki, Uberella marwicki Powell, 1935 † - (NATICIDAE) (FOSSIL)
- marwicki, Friginatica marwicki A.G. Beu, 1970 † - (NATICIDAE) (FOSSIL)
- marwicki, Jupiteria marwicki (P.A. Maxwell, 1969 †) - (NUCULANIDAE) (FOSSIL)
- marwicki, Austrohinnites marwicki (R.S. Allan, 1946 †) - (PECTINIDAE) (FOSSIL)
- marwicki, Phialopecten marwicki (A.G. Beu, 1970 †) - (PECTINIDAE) (FOSSIL)
- marwicki, Serripecten marwicki P.A. Maxwell, 1992 † - (PECTINIDAE) (FOSSIL)
- marwicki, Pecten marwicki H.J. Finlay, 1930 - syn of: Pecten novaezelandiae L.A. Reeve, 1852 - (PECTINIDAE)
- marwicki, Offadesma marwicki C.A. Fleming, 1950 † - (PERIPLOMATIDAE) (FOSSIL)
- marwicki, Murihikua marwicki Begg & J. Grant-Mackie, 2003 † - (PLEUROTOMARIIDAE) (FOSSIL)
- marwicki, Haurokoa marwicki (Finlay, 1924 †) - (RANELLIDAE) (FOSSIL)
- marwicki, Volvulella marwicki (J.A. Bartrum & Powell, 1928 †) - (RHIZORIDAE) (FOSSIL)
- marwicki, Ringicula marwicki Powell, 1935 † - (RINGICULIDAE) (FOSSIL)
- marwicki, Tylospira marwicki Finlay, 1931 † - (STRUTHIOLARIIDAE) (FOSSIL)
- marwicki, Thyasira marwicki K. Amano, C. Little, K.A. Campbell, R.G. Jenkins & Saeth - (THYASIRIDAE)
- marwicki, Trigonia marwicki Fleming, 1987 † - (TRIGONIIDAE) (FOSSIL)
- marwicki, Cosmasyrinx marwicki A.G. Beu, 1970 † - (TURRIDAE) (FOSSIL)
- marwicki, Cyclorismina marwicki Zinsmeister, 1984 † - (VENERIDAE) (FOSSIL)
- marwicki, Microvoluta marwicki (P. Vella, 1954 †) - (VOLUTOMITRIDAE) (FOSSIL)
- marwicki stewartianum, Buccinulum marwicki stewartianum A.W.B. Powell, 1929 - syn of: Buccinulum pertinax (E.C. Von Martens, 1878) - (BUCCINIDAE)
- Marwickia, Genus Marwickia Finlay, 1930 (VENERIDAE) (FOSSIL)
- marwotoae, Tylomelania marwotoae T. von Rintelen, P. Bouchet & M. Glaubrecht, 2007 - (PACHYCHILIDAE)
- maryae, Clathurella maryae J.H. McLean & L.H. Poorman, 1971 - (CLATHURELLIDAE)
- maryae, Leptadrillia maryae P.J. Fallon, 2016 - (DRILLIIDAE)
- maryae, Terebraspira maryae E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- maryae, Trossulasalpinx maryae E.J. Petuch, 1991 † - (MURICIDAE) (FOSSIL)
- maryae, Fidera maryae Pojeta & Gilbert-Tomlinson, 1977 † - (PRAENUCULIDAE) (FOSSIL)
- maryannae, Kalidos maryannae R.J. Griffiths & D.G. Herbert, 2013 - (ARIOPHANTIDAE)
- maryattiana, Anodonta maryattiana I. Lea, 1840 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- marybellae, Semipallium marybellae B.K. Raines, 1996 - (PECTINIDAE)
- marybethi, Siphonalia marybethi M. Parth, 1996 - (BUCCINIDAE)
- marycolliverae, Danielleilona marycolliverae J. Stanisic, 1993 - (CHAROPIDAE)
- maryea, Pterocerella maryea D.T. Dockery, 1993 † - (APORRHAIDAE) (FOSSIL)
- marylandense, Cyclonema marylandense Prosser & Kindle, 1913 † - (PLATYCERATIDAE) (FOSSIL)
- marylandensis, Cimomia marylandensis Miller & Thompson, 1933 † - (HERCOGLOSSIDAE) (FOSSIL)
- marylandica, Mytilarca marylandica Ohern in Ohern & C.J. Maynard, 1913 † - (AMBONYCHIIDAE) (FOSSIL)
- marylandica, Barbatia marylandica (T.A. Conrad, 1840 †) - (ARCIDAE) (FOSSIL)
- marylandica, Astarte marylandica Clark, 1895 † - (ASTARTIDAE) (FOSSIL)
- marylandica, Siphonalia marylandica Martin, 1904 † - syn of: Mariafusus marylandica (Martin, 1904 †) - (BUCCINIDAE) (FOSSIL)
- marylandica, Admete marylandica G.C. Martin, 1904 † - (CANCELLARIIDAE) (FOSSIL)
- marylandica, Marianarona marylandica E.J. Petuch, 1988 † - (CANCELLARIIDAE) (FOSSIL)
- marylandica, Venericardia marylandica Clark & Martin, 1901 † - syn of: Venericor ascia (B. Rogers, 1839 †) - (CARDITIDAE) (FOSSIL)
- marylandica, Surcula marylandica (T.A. Conrad, 1841 †) - (CLAVATULIDAE) (FOSSIL)
- marylandica, Marvacrassatella marylandica (T.A. Conrad, 1832 †) - (CRASSATELLIDAE) (FOSSIL)
- marylandica, Ovatella marylandica H.A. Pilsbry, 1900 - syn of: Myosotella myosotis (J.P.R. Draparnaud, 1801) - (ELLOBIIDAE)
- marylandica, Epitonium marylandica Martin, 1904 † - (EPITONIIDAE) (FOSSIL)
- marylandica, Mariafusus marylandica (Martin, 1904 †) - (FASCIOLARIIDAE) (FOSSIL)
- marylandica, Fissuridea marylandica T.A. Conrad, 1841 † - (FISSURELLIDAE) (FOSSIL)
- marylandica, Emarginula marylandica Martin, 1904 † - (FISSURELLIDAE) (FOSSIL)
- marylandica, Glossus marylandica Schoonover, 1941 † - (GLOSSIDAE) (FOSSIL)
- marylandica, Holopea marylandica A.H. Clarke & Swartz, 1913 † - (HOLOPEIDAE) (FOSSIL)
- marylandica, Bornia marylandica L.C. Glenn, 1904 † - (KELLIIDAE) (FOSSIL)
- marylandica, Erycina marylandica L.C. Glenn, 1904 † - (LASAEIDAE) (FOSSIL)
- marylandica, Ectomaria marylandica A.H. Clarke & Swartz, 1913 † - syn of: Gyrodoma marylandica (A.H. Clarke & Swartz, 1913 †) - (LOPHOSPIRIDAE) (FOSSIL)
- marylandica, Macluritella marylandica Sando, 1957 † - (MACLURITIDAE) (FOSSIL)
- marylandica, Leptomactra marylandica (W.H. Dall, 1898 †) - (MACTRIDAE) (FOSSIL)
- marylandica, Propebela marylandica E.J. Petuch, 1988 † - (MANGELIIDAE) (FOSSIL)
- marylandica, Mitra marylandica Clark, 1895 † - (MITRIDAE) (FOSSIL)
- marylandica, Ebala marylandica Martin, 1904 † - (MURCHISONELLIDAE) (FOSSIL)
- marylandica, Gyrodoma marylandica (A.H. Clarke & Swartz, 1913 †) - (MURCHISONIIDAE) (FOSSIL)
- marylandica, Nassa marylandica Martin, 1904 † - (MURICIDAE) (FOSSIL)
- marylandica, Ilyanassa marylandica (Martin, 1904 †) - (NASSARIIDAE) (FOSSIL)
- marylandica, Bulliopsis marylandica T.A. Conrad, 1862 † - (NASSARIIDAE) (FOSSIL)
- marylandica, Poliniciella marylandica E.J. Petuch, 1988 † - (NATICIDAE) (FOSSIL)
- marylandica, Euspira marylandica T.A. Conrad, 1865 † - (NATICIDAE) (FOSSIL)
- marylandica, Placopecten marylandica (Wagner, 1839 †) - (PECTINIDAE) (FOSSIL)
- marylandica, Pholadomya marylandica T.A. Conrad, 1842 † - (PHOLADOMYIDAE) (FOSSIL)
- marylandica, Morea marylandica J. Gardner, 1916 † - (PHOLIDOTOMIDAE) (FOSSIL)
- marylandica, Syrnola marylandica Martin, 1904 † - (PYRAMIDELLIDAE) (FOSSIL)
- marylandica, Cylichnina marylandica Martin, 1904 † - (RETUSIDAE) (FOSSIL)
- marylandica, Onoba marylandica Martin, 1904 † - (RISSOIDAE) (FOSSIL)
- marylandica, Abra marylandica L.C. Glenn, 1904 † - (SEMELIDAE) (FOSSIL)
- marylandica, Scalaspira marylandica Schoonover, 1941 † - (STREPSIDURIDAE) (FOSSIL)
- marylandica, Macoma marylandica L.C. Glenn, 1904 † - (TELLINIDAE) (FOSSIL)
- marylandica, Laevihastula marylandica E.J. Petuch, 1988 † - (TEREBRIDAE) (FOSSIL)
- marylandica, Mariaturricula marylandica (T.A. Conrad, 1841 †) - (TURRIDAE) (FOSSIL)
- marylandica, Pleurotoma marylandica T.A. Conrad, 1841 † - syn of: Mariaturricula marylandica (T.A. Conrad, 1841 †) - (TURRIDAE) (FOSSIL)
- marylandica, Macrocallista marylandica (T.A. Conrad, 1833 †) - (VENERIDAE) (FOSSIL)
- marylandica halli, Morea marylandica halli N.F. Sohl, 1964 † - (PHOLIDOTOMIDAE) (FOSSIL)
- marylandicum, Platyceras marylandicum A.H. Clarke & Swartz, 1913 † - (PLATYCERATIDAE) (FOSSIL)
- marylandicum, Tegula marylandicum Martin, 1904 † - (TEGULIDAE) (FOSSIL)
- marylandicum, Eudolium marylandicum E.J. Petuch, 1988 † - (TONNIDAE) (FOSSIL)
- marylandicus, Turrifulgur marylandicus E.J. Petuch, 1993 † - (BUSYCONIDAE) (FOSSIL)
- marylandicus, Conus marylandicus J. Green, 1830 † - (CONIDAE) (FOSSIL)
- marylandicus, Philoxene marylandicus A.H. Clarke & Swartz, 1913 † - syn of: Philoxene cyclostomus (J.W. Hall, 1858 †) - (EUOMPHALIDAE) (FOSSIL)
- marylandicus, Volutifusus marylandicus E.J. Petuch, 1988 † - (VOLUTIDAE) (FOSSIL)
- maryleeae, Impages maryleeae (R.D. Burch, 1965) - (TEREBRIDAE)
- maryleeae, Terebra maryleeae R.D. Burch, 1965 - syn of: Impages maryleeae (R.D. Burch, 1965) - (TEREBRIDAE)
- Marylnessa, Genus Marylnessa J. Stanisic, 2010 (CAMAENIDAE)
- marymansfeldae, Conus marymansfeldae E.J. Petuch, 1994 † - (CONIDAE) (FOSSIL)
- marymansfieldae, Conus marymansfieldae E.J. Petuch, 1994 † - (CONIDAE) (FOSSIL)
- maryolisae, Ticofurcilla maryolisae Ortea, 2016 - (CYSTISCIDAE)
- Maryonychia, Genus Maryonychia Pojeta, 1966 (AMBONYCHIIDAE) (FOSSIL)
- marypalmerae, Phenacovolva marypalmerae W.J. Raymond, 1996 † - (OVULIDAE) (FOSSIL)
- marysae, Peltoceras marysae Bonnot, Boursicot & Ferchaud, 2005 † - (ASPIDOCERATIDAE) (FOSSIL)
- marysvillensis, Protocardia marysvillensis R.E. Dickerson, 1916 † - syn of: Nemocardium linteum (T.A. Conrad, 1855 †) - (CARDIIDAE) (FOSSIL)
- marysvillensis, Pillomena marysvillensis C.J. Gabriel, 1947 - (CHAROPIDAE)
- marza, Ellsiphon marza T. Iredale, 1940 - (SIPHONARIIDAE)
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