- mamanucensis, Granulina mamanucensis A. Wakefield & T. McCleery, 2004 - (MARGINELLIDAE)
- Mambrinia, Subgenus Galeodea (Mambrinia) J.A. Gardner, 1939 (CASSIDAE) (FOSSIL)
- mamertensis, Oppelia mamertensis L. Waagen, 1869 † - (OPPELIIDAE) (FOSSIL)
- mamertina, Papillifera mamertina L. Benoit, 1840 - syn of: Papillifera bidens affinis (R.A. Philippi, 1836) - (CLAUSILIIDAE)
- mametschinskensis, Lamellinucula mametschinskensis Devjatilova, 1981 † - syn of: Leionucula hannibali (Clark, 1925 †) - (NUCULIDAE) (FOSSIL)
- mameyensis, Chondrothyretes shuttleworthi mameyensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- mameyensis, Torrecoptis mameyensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- mameyensis jumaguasensis, Torrecoptis mameyensis jumaguasensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- mameyi, Chondropometes segregatum mameyi C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- Mamiconus, syn of: Genus Endemoconus T. Iredale, 1931 (CONIDAE)
- mamilla, Camaena mamilla (A.E.J. Férussac, 1821) - (CAMAENIDAE)
- mamilla, Cocculina mamilla S.I. Di Geronimo, 1974 - (COCCULINIDAE)
- mamilla, Melanella mamilla (W.L. May, 1916) - (EULIMIDAE)
- mamilla, Eulima mamilla W.L. May, 1916 - syn of: Melanella mamilla (W.L. May, 1916) - (EULIMIDAE)
- mamilla, Natica mamilla E. Sismonda † - syn of: Polinices submamilla (F. Sacco, 1891 †) - (NATICIDAE) (FOSSIL)
- mamilla, Natica mamilla J.B.P.A. Lamarck, 1822 - syn of: Polinices mammilla (C. Linnaeus, 1758) - (NATICIDAE)
- mamilla, Natica mamilla C. Linnaeus, 1758 - syn of: Polinices mammilla (C. Linnaeus, 1758) - (NATICIDAE)
- Mamilla, syn of: Genus Mammilla H.C.F. Schumacher, 1817 (NATICIDAE)
- mamilla, Smaragdia mamilla T.N. Annandale, 1924 - syn of: Smaragdia souverbiana (R.P. Montrouzier, 1863) - (NERITIDAE)
- mamilla, Nanaphora mamilla C.F. Laseron, 1958 - (TRIPHORIDAE)
- mamilla crassiventris, Camaena mamilla crassiventris B. Rensch, 1933 - (CAMAENIDAE)
- Mamillana, syn of: Genus Livonia J.E. Gray, 1855 (VOLUTIDAE)
- mamillanum, Bittium mamillanum R.B. Watson, 1880 - syn of: Cerithiella amblytera (R.B. Watson, 1880) - (CERITHIIDAE)
- mamillanum, Sphaerium mamillanum C.A. Westerlund, 1871 - (SPHAERIIDAE)
- mamillanum, Pisidium mamillanum H.B. Herrington, 1954 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- mamillare, Douvilleiceras mamillare (Schlotheim, 1813 †) - (DOUVILLEICERATIDAE) (FOSSIL)
- Mamillaria, syn of: Genus Polinices P.D. Montfort, 1810 (NATICIDAE)
- mamillaris, Anomia mamillaris Anderson, 1929 † - (ANOMIIDAE) (FOSSIL)
- mamillaris, Simobelus mamillaris (K.E.I. von Eichwald, 1865 †) - (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- mamillaris, Calyptraea mamillaris W.J. Broderip, 1834 - (CALYPTRAEIDAE)
- mamillaris, Cassis mamillaris J.P.S. Grateloup, 1847 † - (CASSIDAE) (FOSSIL)
- mamillaris, Conus mamillaris J. Green, 1830 - syn of: Dauciconus daucus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- mamillaris, Cyclotus mamillaris N.H. Odhner, 1919 - (CYCLOPHORIDAE)
- mamillaris, Coelocaulus mamillaris J. Perner, 1907 † - syn of: Coelocaulus cybele J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- mamillaris, Leonia mamillaris (J.B.P.A. Lamarck, 1822) - syn of: Leonia mammillaris (J.B.P.A. Lamarck, 1822) - (POMATIIDAE)
- mamillaris, Succinea canella mamillaris C.M.F. Ancey, 1889 - (SUCCINEIDAE)
- mamillaris, Trimusculus mamillaris C. Linnaeus, 1758 - syn of: Trimusculus mammillaris (C. Linnaeus, 1758) - (TRIMUSCULIDAE)
- mamillaris bellardii, Cassis mamillaris bellardii O.G. Michelotti, 1847 † - syn of: Semicassis jauberti A.E.M. Cossmann & M.A. Peyrot, 1923 † - (CASSIDAE) (FOSSIL)
- mamillaris pedemontana, Cassis mamillaris pedemontana F. Sacco, 1890 - (CASSIDAE)
- mamillata, Amalda mamillata (R.B. Hinds, 1844) - (ANCILLARIIDAE)
- mamillata, Ancilla mamillata R.B. Hinds, 1844 - syn of: Amalda mamillata (R.B. Hinds, 1844) - (ANCILLARIIDAE)
- mamillata, Chauvetia mamillata (A. Risso, 1826) - (BUCCINIDAE)
- mamillata, Cypraecassis mamillata E.S. Salmon, 1948 - syn of: Cypraecassis testiculus senegalica (J.F. Gmelin, 1791) - (CASSIDAE)
- mamillata, Clausilia mamillata J.R. Bourguignat, 1877 - syn of: Clausilia bidentata abietina (D. Dupuy, 1850) - (CLAUSILIIDAE)
- mamillata, Platyrhaphe mamillata (J.F. Quadras & O.F. von Möllendorff, 1893) - (CYCLOPHORIDAE)
- mamillata, Gibberula mamillata F. Boyer, 2014 - (CYSTISCIDAE)
- mamillata, Fissurella mamillata A. Risso, 1826 - syn of: Diodora graeca (C. Linnaeus, 1758) - (FISSURELLIDAE)
- mamillata, Pseudamnicola mamillata A. Paladilhe, 1869 - syn of: Pseudamnicola moussonii (P. Calcara, 1841) - (HYDROBIIDAE)
- mamillata, Pseudorhaphitoma mamillata (E.A. Smith, 1888) - (MANGELIIDAE)
- mamillata, Nassa mamillata H.B. Preston, 1907 † - syn of: Reticunassa paupera dermestina (A.A. Gould, 1860 †) - (NASSARIIDAE) (FOSSIL)
- mamillata, Nassa mamillata A. Risso, 1826 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata, Patella mamillata A. Risso, 1826 - syn of: Trimusculus mammillaris (C. Linnaeus, 1758) - (PATELLIDAE)
- mamillata, Planaxis mamillata A. Risso, 1826 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (PLANAXIDAE)
- mamillata, Physastra mamillata (G.B. Sowerby, 1874) - (PLANORBIDAE)
- mamillata, Pirenella mamillata J.E. Gray, 1847 - syn of: Potamides conicus (H.M.D. de Blainville, 1829) - (POTAMIDIDAE)
- mamillata, Potamides conicus mamillata A. Risso, 1826 - (POTAMIDIDAE)
- mamillata, Retusa mamillata R.A. Philippi, 1836 - syn of: Retusa mammillata (R.A. Philippi, 1836) - (RETUSIDAE)
- mamillata, Alvania mamillata A. Risso, 1826 - (RISSOIDAE)
- mamillata, Finella mamillata R.B. Watson, 1880 - (SCALIOLIDAE)
- mamillata, Steinmanella mamillata (Kitchin, 1903) † - (STEINMANELLIDAE) (FOSSIL)
- mamillata, Subulina mamillata (A. Craven, 1880) - (SUBULINIDAE)
- mamillata, Succinea mamillata H.H. Beck, 1837 - (SUCCINEIDAE)
- mamillata, Oxyloma mamillata J.F. Mabille, 1869 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- mamillata, Cinguloterebra mamillata (R.B. Watson, 1886) - (TEREBRIDAE)
- mamillata, Terebra mamillata R.B. Watson, 1886 - syn of: Cinguloterebra mamillata (R.B. Watson, 1886) - (TEREBRIDAE)
- mamillata, Obesula mamillata (J.C. Verco, 1909) - (TRIPHORIDAE)
- mamillata, Pleurotoma mamillata E.A. Smith, 1888 - syn of: Pseudorhaphitoma mamillata (E.A. Smith, 1888) - (TURRIDAE)
- mamillata carlovacensis, Vivipara mamillata carlovacensis W. Kobelt, 1909 - syn of: Viviparus ater G.J. De Cristofori & G. Jan, 1832 - (VIVIPARIDAE)
- mamillata gratiosa, Nassa mamillata gratiosa T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata hazayi, Paludina mamillata hazayi C.A. Westerlund, 1886 - syn of: Viviparus acerosus J.R. Bourguignat, 1862 - (VIVIPARIDAE)
- mamillata lacunaris, Nassa mamillata lacunaris T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata propria, Nassa mamillata propria T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata syracusana, Nassa mamillata syracusana T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata tenuisculpta, Nassa mamillata tenuisculpta T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata tiesenhauseni, Nassa mamillata tiesenhauseni T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata tricolor, Nassa mamillata tricolor T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillata valentina, Nassa mamillata valentina T.A. de M. Monterosato, 1912 - syn of: Nassarius nitidus (J.G. Jeffreys, 1867) - (NASSARIIDAE)
- mamillatum, Trachycardium mamillatum (Furon 1948) † - (CARDIIDAE) (FOSSIL)
- mamillatum, Cerithium mamillatum A. Risso, 1826 - syn of: Bittium latreillii (B.C.M. Payraudeau, 1826) - (CERITHIIDAE)
- mamillatum, Douvilleiceras mamillatum Schlotheim, 1813 † - syn of: Douvilleiceras mammillatum (Schlotheim, 1813 †) - (DOUVILLEICERATIDAE) (FOSSIL)
- mamillatum, Stephopoma mamillatum J.E. Morton & A.M. Keen, 1960 - (VERMETIDAE)
- mamillatum tomentosum, Sphaerium mamillatum tomentosum C.A. Westerlund, 1871 - syn of: Sphaerium cornea (C. Linnaeus, 1767) - (SPHAERIIDAE)
- mamillatus, Pleurobranchus mamillatus J.R.C. Quoy & J.P. Gaimard, 1832 - (PLEUROBRANCHIDAE)
- mamillatus, Pleurodiscoides mamillatus (Andreae, 1904) † - (PLEURODISCIDAE) (FOSSIL)
- mamillatus, Unio mamillatus Hislop, 1859 † - (UNIONIDAE) (FOSSIL)
- mamillatus, Viviparus mamillatus H.C. Küster, 1852 - (VIVIPARIDAE)
- mamillifera, Nassarius mamillifera J.C. Melvill, 1897 - syn of: Nassarius mammilliferus (J.C. Melvill, 1897) - (NASSARIIDAE)
- mamilliferum, Dimeroceras mamilliferum (C.L.F. von Sandberger, 1851 †) - (DIMEROCERATIDAE) (FOSSIL)
- mamilliferum, Goniatites mamilliferum C.L.F. von Sandberger, 1851 † - syn of: Dimeroceras mamilliferum (C.L.F. von Sandberger, 1851 †) - (GONIATITIDAE) (FOSSIL)
- mamilllatum, Hyperderoceras mamilllatum (C.T. Simpson †) - (EODEROCERATIDAE) (FOSSIL)
- Mamillocylichna, Genus Mamillocylichna H. Nordsieck, 1972 (CYLICHNIDAE)
- Mamilloretusa, syn of: Genus Retusa T. Brown, 1827 (RETUSIDAE)
- mamimarumai, Mipus mamimarumai (S. Kosuge, 1980) - (MURICIDAE)
- Maminka, Genus Maminka Barrande, 1881 (STOLIDOTIDAE) (FOSSIL)
- mamirapiratra, Parvedentulina mamirapiratra K.C. Emberton, 2002 - (STREPTAXIDAE)
- mamiyai, Anglonautilus mamiyai E. Matsumoto & S. Miyauchi, 1983 † - (CYMATOCERATIDAE) (FOSSIL)
- Mamma, syn of: Genus Polinices P.D. Montfort, 1810 (NATICIDAE)
- mammaeformis, Trochonerita mammaeformis Renaux in A.E.M. Cossmann, 1907 † - (NERITIDAE) (FOSSIL)
- mammaria, Semineritina mammaria (J.B.P.A. Lamarck, 1804 †) - (NERITIDAE) (FOSSIL)
- mammata, Bursa mammata P.F. Röding, 1798 - syn of: Bursa bufonia (J.F. Gmelin, 1791) - (BURSIDAE)
- mammata, Alcadia mammata (P.F. Röding, 1798) - (HELICINIDAE)
- mammata, Mammilla mammata (P.F. Röding, 1798) - (NATICIDAE)
- mammatus, Polinices mammatus P.F. Röding, 1798 - syn of: Mammilla mammata (P.F. Röding, 1798) - (NATICIDAE)
- mammatus, Viviparus mammatus (Stefanescu, 1889 †) - (VIVIPARIDAE) (FOSSIL)
- mammiferum, Foordiceras mammiferum (Miller, 1945 †) - (KONINCKIOCERATIDAE) (FOSSIL)
- mammiferum, Metacoceras mammiferum Miller, 1945 † - syn of: Foordiceras mammiferum (Miller, 1945 †) - (TAINOCERATIDAE) (FOSSIL)
- mammiformis, Perotrochus mammiformis E.A.L. Kittl, 1894 † - syn of: Codinella mammiformis (E.A.L. Kittl, 1894 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- mammiformis, Pleurotomaria mammiformis E.A.L. Kittl, 1894 † - syn of: Codinella mammiformis (E.A.L. Kittl, 1894 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- mammiformis, Codinella mammiformis (E.A.L. Kittl, 1894 †) - (STUORELLIDAE) (FOSSIL)
- mammilaris, Patella mammilaris C. Linnaeus, 1758 - syn of: Trimusculus mammillaris (C. Linnaeus, 1758) - (PATELLIDAE)
- mammilaris, Trimusculus mammilaris C. Linnaeus, 1758 - syn of: Trimusculus mammillaris (C. Linnaeus, 1758) - (TRIMUSCULIDAE)
- mammilaris, Trochus mammilaris Moore † - (TROCHIDAE) (FOSSIL)
- mammilata, Conotheca mammilata Missarzehevsky in Rozanov & al., 1969 † - syn of: Conotheca subcurvata Yü, 1974 † - (CIRCOTHECIDAE) (FOSSIL)
- mammilata, Ampezzopleura mammilata A. Nützel, 1998 † - (ZYGOPLEURIDAE) (FOSSIL)
- mammilatus, Parakorilithes mammilatus (He & Pei, 1984 †) - (PARAKORILITHIDAE) (FOSSIL)
- mammilla, Amalda mammilla (G.B. I Sowerby, 1830) - (ANCILLARIIDAE)
- mammilla, Cerithiopsis mammilla W.L. May, 1919 - syn of: Specula mammilla (W.L. May, 1919) - (CERITHIOPSIDAE)
- Mammilla, Genus Mammilla H.C.F. Schumacher, 1817 (NATICIDAE)
- mammilla, Polinices mammilla (C. Linnaeus, 1758) - (NATICIDAE)
- mammilla, Nerita mammilla C. Linnaeus, 1758 - syn of: Polinices mammilla (C. Linnaeus, 1758) - (NERITIDAE)
- mammilla, Specula mammilla (W.L. May, 1919) - (NEWTONIELLIDAE)
- mammilla, Livonia mammilla (G.B. I Sowerby, 1844) - (VOLUTIDAE)
- mammilla leucostoma, Livonia mammilla leucostoma A. Maybloom, 1951 - syn of: Livonia mammilla (G.B. I Sowerby, 1844) - (VOLUTIDAE)
- mammilla ponderosa, Polinices mammilla ponderosa R.A. Philippi, 1849 - (NATICIDAE)
- mammilla pyriformis, Polinices mammilla pyriformis C.A. Récluz, 1844 - (NATICIDAE)
- Mammillaedrillae, Subgenus Compsodrillia (Mammillaedrillae) J.T. Kuroda, T. Habe & K. Oyama, 1971 (PSEUDOMELATOMIDAE)
- Mammillaedrillia, Genus Mammillaedrillia J.T. Kuroda & K. Oyama, 1971 (PSEUDOMELATOMIDAE)
- mammillanum, Cerithium mammillanum R.B. Watson, 1880 - syn of: Cerithiella amblytera (R.B. Watson, 1880) - (CERITHIIDAE)
- Mammillaria, syn of: Genus Neverita A. Risso, 1826 (NATICIDAE)
- mammillaris, Calyptraea mammillaris W.J. Broderip, 1834 - syn of: Calyptraea mamillaris W.J. Broderip, 1834 - (CALYPTRAEIDAE)
- mammillaris, Cassis mammillaris J.P.S. Grateloup, 1847 † - syn of: Cassis mamillaris J.P.S. Grateloup, 1847 † - (CASSIDAE) (FOSSIL)
- mammillaris, Naticopsis mammillaris de Koninck, 1881 † - syn of: Naticopsis variata (B. Phillips, 1836 †) - (DELPHINULOPSIDAE) (FOSSIL)
- mammillaris, Patella mammillaris C. Linnaeus, 1758 - syn of: Trimusculus mammillaris (C. Linnaeus, 1758) - (PATELLIDAE)
- mammillaris, Leonia mammillaris (J.B.P.A. Lamarck, 1822) - (POMATIIDAE)
- mammillaris, Trimusculus mammillaris (C. Linnaeus, 1758) - (TRIMUSCULIDAE)
- mammillaris compacta, Leonia mammillaris compacta (P.M. Pallary, 1927) - (POMATIIDAE)
- mammillaris turricula, Leonia mammillaris turricula (P.M. Pallary, 1920) - (POMATIIDAE)
- mammillata, Tonicia mammillata de Rochebrune, 1882 † - syn of: Middendorfia corrugis (Boettger, 1869 †) - (CHITONIDAE) (FOSSIL)
- mammillata, Makiyamaia mammillata J.T. Kuroda, 1961 - (CLAVATULIDAE)
- mammillata, Mucronalia mammillata W.H. Dall, 1927 - (EULIMIDAE)
- mammillata, Tritia reticulata mammillata (A. Risso, 1826) - (NASSARIIDAE)
- mammillata, Compsodrillia mammillata J.T. Kuroda & K. Oyama, 1971 - (PSEUDOMELATOMIDAE)
- mammillata, Odostomia mammillata P.P. Carpenter, 1857 - (PYRAMIDELLIDAE)
- mammillata, Retusa mammillata (R.A. Philippi, 1836) - (RETUSIDAE)
- mammillata, Lissotesta mammillata (K.H.J. Thiele, 1912) - (SEGUENZIOIDEA (UNASSIGNED))
- mammillatum, Caecum mammillatum Wood, 1842 † - (CAECIDAE) (FOSSIL)
- mammillatum, Douvilleiceras mammillatum (Schlotheim, 1813 †) - (DOUVILLEICERATIDAE) (FOSSIL)
- mammillatum, Stephopoma mammillatum J.E. Morton & A.M. Keen, 1960 - syn of: Stephopoma mamillatum J.E. Morton & A.M. Keen, 1960 - (VERMETIDAE)
- mammillatum aequinodum, Douvilleiceras mammillatum aequinodum (Quensted, 1846 †) - (DOUVILLEICERATIDAE) (FOSSIL)
- mammillatus, Parakolithes mammillatus He & al., 1984 † - (HYOLITHIDA (UNASSIGNED)) (FOSSIL)
- mammillatus, Pleurobranchus mammillatus Schultz in R.A. Philippi, 1836 - syn of: Pleurobranchus testudinarius F.J. Cantraine, 1835 - (PLEUROBRANCHIDAE)
- mammillifera, Nassarius mammillifera J.C. Melvill, 1897 - syn of: Nassarius mammilliferus (J.C. Melvill, 1897) - (NASSARIIDAE)
- mammillifera hindarabica, Nassarius mammillifera hindarabica J.C. Melvill & R. Standen, 1901 - syn of: Nassarius mammilliferus (J.C. Melvill, 1897) - (NASSARIIDAE)
- mammilliferus, Nassarius mammilliferus (J.C. Melvill, 1897) - (NASSARIIDAE)
- Mammiscala, syn of: Subgenus Amaea (Discoscala) Saccoa, 1890 (EPITONIIDAE) (FOSSIL)
- mammispira, Dicosmos mammispira E.A.L. Kittl, 1899 † - (NATICOPSIDAE) (FOSSIL)
- Mammites, Genus Mammites Laube & Bruder, 1887 (ACANTHOCERATIDAE) (FOSSIL)
- mammosa, Dendrodoris mammosa F.D. Abraham, 1877 - syn of: Dendrodoris krusensternii (J.E. Gray, 1850) - (DENDRODORIDIDAE)
- mammosa, Opalia mammosa (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- mammosa, Epitonium mammosa J.C. Melvill & R. Standen, 1903 - syn of: Opalia mammosa (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- mammosa, Pseudaulicina mammosa (J.L.M. Defrance, 1829 †) - (VOLUTIDAE) (FOSSIL)
- mammula, Straparollus mammula de Koninck, 1881 † - (EUOMPHALIDAE) (FOSSIL)
- Mamoea, syn of: Genus Mamoeatomaria Begg & Grant-Mackie, 2006 (PLEUROTOMARIIDAE) (FOSSIL)
- Mamoeatomaria, Genus Mamoeatomaria Begg & Grant-Mackie, 2006 (PLEUROTOMARIIDAE) (FOSSIL)
- mamoi, Costatella mamoi L. Benoit, 1875 - syn of: Physella acuta (J.P.R. Draparnaud, 1805) - (PHYSIDAE)
- mamoi, Liostomia mamoi C. Mifsud, 1993 - (PYRAMIDELLIDAE)
- mamoi, Rissoa mamoi A. Aradas & G. Maggiore, 1844 - syn of: Parthenina suturalis (R.A. Philippi, 1844) - (RISSOIDAE)
- mamona, Carinodrillia mamona L.F. Corea, 1934 - (PSEUDOMELATOMIDAE)
- mamoreensis, Leptinaria mamoreensis F.C. Baker, 1926 - (SUBULINIDAE)
- mamotica, Muticaria macrostoma mamotica (G. Gulia, 1861) - (CLAUSILIIDAE)
- mana, Parateinostoma mana (L. von G. Tausch, 1886 †) - (HYDROBIIDAE) (FOSSIL)
- manabense, Aperostoma manabense C. de la Torre, P. Bartsch & J.P.E. Morrison, 1942 - (NEOCYCLOTIDAE)
- manabia, Chionopsis manabia H.A. Pilsbry & A.A. Olsson, 1941 † - (VENERIDAE) (FOSSIL)
- manabiensis, Eucrassatella manabiensis L.J. Cruz, 1980 - syn of: Hybolophus gibbosus (G.B. I Sowerby, 1832) - (CRASSATELLIDAE)
- manabiensis, Eucrassatella manabiensis L.J. Cruz, 1980 - syn of: Hybolophus gibbosus (G.B. I Sowerby, 1832) - (CRASSATELLIDAE)
- manai, Scabrotrophon manai Houart & Héros, 2016 - (MURICIDAE)
- Manaia, syn of: Genus Glycymeris A. da Costa, 1778 (GLYCYMERIDIDAE)
- manaiaensis, Glycymeris manaiaensis (J. Marwick, 1923 †) - (GLYCYMERIDIDAE) (FOSSIL)
- manambolense, Nolaniceras manambolense M. Collignon, 1962 † - (DESHAYESITIDAE) (FOSSIL)
- Manambolites, Genus Manambolites Hourcq, 1949 (SPHENODISCIDAE) (FOSSIL)
- manampetsaensis, Subulina manampetsaensis E. Fischer-Piette & A.M. Testud, 1964 - (SUBULINIDAE)
- manana, Leptachatina opipara manana H.A. Pilsbry & C.M. Cooke, 1914 - (AMASTRIDAE)
- mananarae, Parvedentulina mananarae K.C. Emberton, 2002 - (STREPTAXIDAE)
- mananensis, Aeolidia mananensis W. Stimpson, 1853 - syn of: Flabellina verrucosa (G.O. Sars, 1829) - (AEOLIDIIDAE)
- mananensis, Flabellina mananensis W. Stimpson, 1854 - syn of: Flabellina verrucosa (G.O. Sars, 1829) - (FLABELLINIDAE)
- manangai, Djamaina manangai J.J. Vermeulen & al., 2010 † - (ANAHAMULINIDAE) (FOSSIL)
- mananteninaensis, Murexsul mananteninaensis R. Houart & V. Héros, 2015 - (MURICIDAE)
- manantiali, Pyrgulopsis manantiali (R. Hershler, 1985) - (HYDROBIIDAE)
- manaoba, Turbonilla manaoba A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- manaosensis, Succinea manaosensis H.A. Pilsbry, 1926 - (SUCCINEIDAE)
- Manaria, Genus Manaria E.A. Smith, 1906 (BUCCINIDAE)
- manaricum, Amusium manaricum E.A. Smith, 1906 - (PECTINIDAE)
- manaricum, Propeamussium manaricum (A.C. Bernardi, 1861) - (PROPEAMUSSIIDAE)
- manasoaense, Yabeiceras manasoaense M. Collignon, 1965 † - (COLLIGNONICERATIDAE) (FOSSIL)
- Manasoconus, Genus Manasoconus Peel (HELCIONELLIDAE) (FOSSIL)
- manati, Ledella manati Viegas, N.P. Benaim & R.S. Absalão, 2014 - (NUCULANIDAE)
- manatiense, Cerion manatiense C.G. Aguayo & M.L. Jaume, 1951 - (CERIONIDAE)
- manatiense, Opisthosiphon manatiense C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- manatiense, Chondrothyrium violaceum manatiense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- manatiense saugeti, Cerion manatiense saugeti C.G. Aguayo & M.L. Jaume, 1951 - syn of: Cerion saugeti C.G. Aguayo & M.L. Jaume, 1951 - (CERIONIDAE)
- manawatawhia, Pisinna manawatawhia (A.W.B. Powell, 1937) - (ANABATHRIDAE)
- manawatawhia, Climocella manawatawhia (A.W.B. Powell, 1935) - (CHAROPIDAE)
- manawatawhia, Charopa manawatawhia A.W.B. Powell, 1935 - syn of: Climocella manawatawhia (A.W.B. Powell, 1935) - (CHAROPIDAE)
- manawatawhia, Cuna manawatawhia A.W.B. Powell, 1937 - (CONDYLOCARDIIDAE)
- manawatawhia, Fissurisepta manawatawhia (A.W.B. Powell, 1937) - (FISSURELLIDAE)
- manawatawhia, Munditia manawatawhia A.W.B. Powell, 1937 - (LIOTIIDAE)
- manawatawhia, Mesoginella manawatawhia (A.W.B. Powell, 1937) - (MARGINELLIDAE)
- manawatawhia, Nuculana manawatawhia A.W.B. Powell, 1937 - (NUCULANIDAE)
- manawatawhia, Paralaoma manawatawhia J.F. Goulstone & F.J. Brook, 1999 - (PUNCTIDAE)
- manawatawhia, Attenuata manawatawhia (A.W.B. Powell, 1937) - (RISSOIDAE)
- manawatawhia, Nobolira manawatawhia A.W.B. Powell, 1937 - syn of: Attenuata manawatawhia (A.W.B. Powell, 1937) - (RISSOIDAE)
- Manawatawhia, syn of: Genus Onoba H. Adams & A. Adams, 1852 (RISSOIDAE)
- manawatawhia, Rissoina manawatawhia A.W.B. Powell, 1937 - (RISSOINIDAE)
- manawatawhia, Scissurella manawatawhia A.W.B. Powell, 1937 - (SCISSURELLIDAE)
- manawatuna, Cabestana manawatuna C.A. Fleming, 1943 † - (RANELLIDAE) (FOSSIL)
- manazuruensis, Ischnochiton manazuruensis Owada, 2016 - (ISCHNOCHITONIDAE)
- manca, Ovocerina manca (Barrande, 1865 †) - (MANDALOCERATIDAE) (FOSSIL)
- manceli, Cystiscus manceli (F.P. Jousseaume, 1875) - (CYSTISCIDAE)
- manceli, Closia manceli F.P. Jousseaume, 1875 - syn of: Cystiscus manceli (F.P. Jousseaume, 1875) - (MARGINELLIDAE)
- manceli, Naticarius manceli (F.P. Jousseaume, 1874) - (NATICIDAE)
- manceli, Natica manceli F.P. Jousseaume, 1874 - syn of: Naticarius manceli (F.P. Jousseaume, 1874) - (NATICIDAE)
- manchegana, Dulcineaia manchegana Babin & Gutiérrez, 1991 † - (MODIOMORPHIDA (UNASSIGNED)) (FOSSIL)
- manchesterensis, Poteria manchesterensis (P. Bartsch, 1942) - (NEOCYCLOTIDAE)
- manchouricus, Parafossarulus manchouricus (J.R. Bourguignat, 1860) - (BITHYNIIDAE)
- manchouricus japonicus, Parafossarulus manchouricus japonicus (H.A. Pilsbry, 1901) - (BITHYNIIDAE)
- manchurense, Actinoceras manchurense T. Kobayashi, 1928 † - (ACTINOCERATIDAE) (FOSSIL)
- manchurica, Arvella manchurica O.A. Scarlato, 1960 - syn of: Arvella manshurica P. Bartsch in O.A. Scarlato, 1960 - (MYTILIDAE)
- manchurica, Cecina manchurica A. Adams, 1861 - (POMATIOPSIDAE)
- manchurica, Ribeiria manchurica T. Kobayashi, 1933 † - (RIBEIRIIDAE) (FOSSIL)
- manchurica, Pseudoscenella manchurica (Kobayashi, 1933 †) - (STENOTHECIDAE) (FOSSIL)
- manchurica, Ellipsanodon manchurica V.V. Bogatov & Y.I. Starobogatov, 1996 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- manchuricus, Plicifusus manchuricus E.A. Smith, 1875 - syn of: Retifusus jessoensis (L. von Schrenck, 1863) - (BUCCINIDAE)
- manchuricus, Fusus manchuricus E.A. Smith, 1875 - syn of: Retifusus jessoensis (L. von Schrenck, 1863) - (FASCIOLARIIDAE)
- manchuriensis, Lophospira manchuriensis Endo, 1932 † - syn of: Lophospira rectistriata W.J. Raymond, 1908 † - (LOPHOSPIRIDAE) (FOSSIL)
- Manchuroceras, Genus Manchuroceras Ozaki , 1927 (MANCHUROCERATIDAE) (FOSSIL)
- MANCHUROCERATIDAE Kobayashi, 1935 - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ENDOCERIDA [Order]) (FOSSIL)
- Manchurohelix, syn of: Genus Bradybaena H.H. Beck, 1837 (BRADYBAENIDAE)
- mancietensis, Divalinga mancietensis Chavan 1951 † - (LUCINIDAE) (FOSSIL)
- mancietensis, Nassarius mancietensis M.A. Peyrot, 1924 † - (NASSARIIDAE) (FOSSIL)
- Mancikellia, Genus Mancikellia W.H. Dall, 1899 (LASAEIDAE)
- Mancikellya, syn of: Genus Mancikellia W.H. Dall, 1899 (LASAEIDAE)
- mancilla, Drupella mancilla Unknown - syn of: Drupella cornus (P.F. Röding, 1798) - (MURICIDAE)
- mancinella, Calliostoma mancinella A.A. Olsson, 1922 † - (CALLIOSTOMATIDAE) (FOSSIL)
- Mancinella, Genus Mancinella J.H.F. Link, 1807 (MURICIDAE)
- mancinella, Purpura mancinella C. Linnaeus, 1758 - syn of: Mancinella alouina (P.F. Röding, 1798) - (MURICIDAE)
- mancinella, Mancinella mancinella C. Linnaeus, 1758 - syn of: Mancinella alouina (P.F. Röding, 1798) - (MURICIDAE)
- mancinella, Thais mancinella C. Linnaeus, 1758 - syn of: Mancinella alouina (P.F. Röding, 1798) - (MURICIDAE)
- mancinella, Murex mancinella C. Linnaeus, 1758 - syn of: Mancinella alouina (P.F. Röding, 1798) - (MURICIDAE)
- mancinella, Oliva mancinella A.A. Olsson, 1922 - syn of: Agaronia testacea (J.B.P.A. Lamarck, 1811) - (OLIVIDAE)
- mancinelloides, Purpura mancinelloides H.M.D. de Blainville, 1832 - syn of: Mancinella echinulata (J.B.P.A. Lamarck, 1822) - (MURICIDAE)
- manco, Plekocheilus manco H.A. Pilsbry, 1930 - (AMPHIBULIMIDAE)
- Mancohedyle, syn of: Genus Pontohedyle A.N. Golikov & Y.I. Starobogatov, 1972 (PARHEDYLIDAE)
- mancorens, Dentalium mancorens A.A. Olsson, 1930 † - (DENTALIIDAE) (FOSSIL)
- mancorensis, Corambe mancorensis A.V. Martynov, B. Brenzinger, Hooker & M. Schrödl, 2011 - (CORAMBIDAE)
- mancorensis, Chion obesulus mancorensis A.A. Olsson, 1961 - (DONACIDAE)
- mancorensis, Nucula mancorensis A.A. Olsson, 1931 † - (NUCULIDAE) (FOSSIL)
- mancorensis, Pseudoliva parinasensis mancorensis A.A. Olsson, 1928 - (PSEUDOLIVIDAE)
- mancorensis, Costacallista mancorensis A.A. Olsson, 1931 † - (VENERIDAE) (FOSSIL)
- mancorensis, Pitar mancorensis (A.A. Olsson, 1931 †) - (VENERIDAE) (FOSSIL)
- mancorensis, Agriopoma mancorensis A.A. Olsson, 1931 † - syn of: Pitar mancorensis (A.A. Olsson, 1931 †) - (VENERIDAE) (FOSSIL)
- mancorensis, Peruluta mancorensis A.A. Olsson, 1928 † - (VOLUTIDAE) (FOSSIL)
- Mancorus, Genus Mancorus Olsson, 1931 (FASCIOLARIIDAE) (FOSSIL)
- mancosense, Haresiceras mancosense Reeside, 1927 † - (SCAPHITIDAE) (FOSSIL)
- Mancosiceras, Genus Mancosiceras Cobban, 1964 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- manculus, Unio manculus É.A.A. Locard, 1889 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- mancum, Gomphoceras mancum Barrande, 1865 † - syn of: Ovocerina manca (Barrande, 1865 †) - (DIESTOCERATIDAE) (FOSSIL)
- mancuniensis, Littorina mancuniensis von Schlotheim, 1820 † - syn of: Tunstallia helicina (von Schlotheim, 1820 †) - (LITTORINIDAE) (FOSSIL)
- mancuniensis, Turbo mancuniensis J. Brown, 1841 † - syn of: Tunstallia helicina (von Schlotheim, 1820 †) - (TURBINIDAE) (FOSSIL)
- mancus, Fusiguraleus mancus (A.W.B. Powell, 1942 †) - (MANGELIIDAE) (FOSSIL)
- mancus, Unio mancus J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- mancus hamyanus, Unio mancus hamyanus J.R. Bourguignat, 1885 - (UNIONIDAE)
- mancus ibericus, Unio mancus ibericus C.R. Altaba, 1992 - (UNIONIDAE)
- mancus ilqui, Unio mancus ilqui Soleillet, 1885 - (UNIONIDAE)
- mancus penchinatianus, Unio mancus penchinatianus J.R. Bourguignat, 1865 - (UNIONIDAE)
- mandahlbarthi, Stenothyra mandahlbarthi R.A.M. Brandt, 1968 - (STENOTHYRIDAE)
- mandahlbarthi, Sinotaia mandahlbarthi R.A.M. Brandt, 1968 - (VIVIPARIDAE)
- Mandahlbarthia, Genus Mandahlbarthia Biocca, 1980 (PLANORBIDAE)
- Mandahlia, Subgenus Tectula (Mandahlia) L. Forcart, 1965 (HYGROMIIDAE)
- mandai, Chuchleconus mandai Frýda, 1998 † - (GASTROPODA INCERTAE SEDIS) (FOSSIL)
- mandaica, Venericardia mandaica Yokoyama, 1911 † - (CARDITIDAE) (FOSSIL)
- Mandaloceras, Genus Mandaloceras Hyatt in Zittel, 1900 (MANDALOCERATIDAE) (FOSSIL)
- MANDALOCERATIDAE Flower & Teichert, 1957 - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-DISCOSORIDA [Order]) (FOSSIL)
- mandamus, Kalidos mandamus K.C. Emberton, 2007 - (ARIOPHANTIDAE)
- mandanensis, Scaphites mandanensis Morton, 1842 † - syn of: Hoploscaphites nicolletii (Morton, 1842 †) - (SCAPHITIDAE) (FOSSIL)
- mandannaensis, Modiolus mandannaensis Lees, 1934 † - (MYTILIDAE) (FOSSIL)
- mandapamensis, Chromodoris mandapamensis Á. Valdés, L. Mollo & J.A. Ortea, 1999 - (CHROMODORIDIDAE)
- mandapamensis, Eubranchus mandapamensis (Subba Rao, 1968) - (EUBRANCHIDAE)
- mandarina, Bradybaena mandarina G.B. I Sowerby, 1839 - syn of: Mandarina mandarina (G.B. I Sowerby, 1839) - (BRADYBAENIDAE)
- Mandarina, Genus Mandarina H.A. Pilsbry, 1895 (CAMAENIDAE)
- mandarina, Mandarina mandarina (G.B. I Sowerby, 1839) - (CAMAENIDAE)
- mandarina, Olivella mandarina (P.L. Duclos, 1835) - (OLIVELLIDAE)
- mandarina, Pleurotoma mandarina F.P. Marrat, 1877 - syn of: Fusiturris pluteata (L.A. Reeve, 1843) - (TURRIDAE)
- mandarinicus, Viviparus mandarinicus (Seninski, 1905 †) - (VIVIPARIDAE) (FOSSIL)
- mandarinoides, Engina mandarinoides K. Fraussen & M. Chino, 2011 - (BUCCINIDAE)
- mandarinus, Penion mandarinus (P.L. Duclos, 1851) - (BUCCINIDAE)
- mandarinus, Fusus mandarinus P.L. Duclos, 1832 - syn of: Penion mandarinus (P.L. Duclos, 1851) - (FASCIOLARIIDAE)
- mandarinus, Tortaxis mandarinus (L. Pfeiffer, 1855) - (SUBULINIDAE)
- mandarinus, Unio mandarinus P.M.A. Morelet, 1863 - syn of: Scabies crispata (A.A. Gould, 1843) - (UNIONIDAE)
- mandarinus grandis, Penion sulcatus mandarinus grandis (J.E. Gray, 1839) - (BUCCINIDAE)
- mandarinus levifida, Penion sulcatus mandarinus levifida T. Iredale, 1929 - (BUCCINIDAE)
- mandarinus oligostira, Penion sulcatus mandarinus oligostira R. Tate, 1891 - (BUCCINIDAE)
- mandarinus spectanda, Penion sulcatus mandarinus spectanda T. Iredale, 1929 - (BUCCINIDAE)
- mandarinus waitei, Penion sulcatus mandarinus waitei (C. Hedley, 1903) - (BUCCINIDAE)
- mandatum, Extranodites mandatum Jeannet, 1951 † - (ASPIDOCERATIDAE) (FOSSIL)
- mandawaensis, Pietteia mandawaensis Cox, 1965 † - (APORRHAIDAE) (FOSSIL)
- mandelayensis, Parreysia mandelayensis W. Theobald, 1873 - (UNIONIDAE)
- Mandelia, Genus Mandelia Α. Valdιs & T.M. Gosliner, 1999 (MANDELIIDAE)
- MANDELIIDAE Valdιs & Gosliner, 1999 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-PHYLLIDIOIDEA [Superfamily])
- mandelslohi, Natica mandelslohi Klipstein, 1843 † - syn of: Neritaria mandelslohi (Klipstein, 1843 †) - (NATICIDAE) (FOSSIL)
- mandelslohi, Nerinea mandelslohi H.G. Bronn, 1837 † - (NERINEIDAE) (FOSSIL)
- mandelslohi, Neritaria mandelslohi (Klipstein, 1843 †) - (NERITARIIDAE) (FOSSIL)
- mandelslohii, Ammonites mandelslohii Klipstein, 1843 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- mandenae, Parvedentulina mandenae K.C. Emberton, 2002 - (STREPTAXIDAE)
- mandevillense, Spirostemma mandevillense H.A. Pilsbry & A.P. Brown, 1910 - (UROCOPTIDAE)
- mandevillensis, Costavarix mandevillensis (H.A. Pilsbry, 1907) - (OLEACINIDAE)
- mandici, Tiaracerithium mandici (M. Harzhauser, 2004 † †) - (BATILLARIIDAE) (FOSSIL)
- mandici, Cerithium mandici M. Harzhauser, 2004 † - syn of: Tiaracerithium mandici (M. Harzhauser, 2004 † †) - (CERITHIIDAE) (FOSSIL)
- mandici, Hauffenia mandici T.A. Neubauer & M. Harzhauser in M. Harzhauser & al., 2014 † - (HYDROBIIDAE) (FOSSIL)
- mandinguorum, Unio mandinguorum A. de Rochebrune, 1882 - syn of: Coelatura aegyptiaca mandinguorum A. de Rochebrune, 1882 - (UNIONIDAE)
- mandinguorum, Coelatura aegyptiaca mandinguorum A. de Rochebrune, 1882 - (UNIONIDAE)
- mandirantjanensis, Placuna mandirantjanensis Martin, 1909 - (PLACUNIDAE)
- mandirensis, Nassarius mandirensis C.H. Oostingh, 1939 † - (NASSARIIDAE) (FOSSIL)
- mandji, Coralliophila mandji P.A. Bernard, 1989 - (MURICIDAE)
- mandokii, Bathrotomaria mandokii J. Szabo, 1980 † - (PLEUROTOMARIIDAE) (FOSSIL)
- Mandolina, Genus Mandolina F.P. Jousseaume, 1884 (CYPRAEIDAE) (FOSSIL)
- mandoni, Helix mandoni J.F. Mabille, 1883 - syn of: Cryptaxis groviana (A.E.J. Férussac, 1823) - (HELICIDAE)
- mandorahae, Costasiella mandorahae K.R. Jensen, 1997 - (COSTASIELLIDAE)
- mandraei, Nucula mandraei S.C.T. Hanley, 1860 - syn of: Ennucula aegeensis (E. Forbes, 1844) - (NUCULIDAE)
- mandraliscai, Galba mandraliscai L. Benoit, 1882 - syn of: Galba truncatula (O.F. Müller, 1774) - (LYMNAEIDAE)
- mandralisci, Pisinna mandralisci A. Aradas & G. Maggiore, 1843 - syn of: Pisinna sabulum (F.J. Cantraine, 1842) - (ANABATHRIDAE)
- mandralisci, Euconulus mandralisci And. Bivona-Bernardi, 1839 - syn of: Euconulus fulvus (O.F. Müller, 1774) - (EUCONULIDAE)
- mandralisci, Rissoa mandralisci A. Aradas & G. Maggiore, 1844 - syn of: Pisinna glabrata (J.K. Megerle Von Mühlfeld, 1824) - (RISSOIDAE)
- mandrewii, Atys mandrewii E.A. Smith, 1872 - syn of: Atys macandrewi E.A. Smith, 1872 - (HAMINOEIDAE)
- mandrica, Devetakia mandrica D.G. Georgiev, 2012 - (HYDROBIIDAE)
- mandroroa, Chelidonura mandroroa T.M. Gosliner, 2011 - (AGLAJIDAE)
- mandshurica, Littorina mandshurica (L. von Schrenck, 1861) - (LITTORINIDAE)
- mandshurica carinata, Litorina mandshurica carinata L. von Schrenck, 1867 - syn of: Littorina mandshurica (L. von Schrenck, 1861) - (LITTORINIDAE)
- mandshurica depressior, Litorina mandshurica depressior L. von Schrenck, 1867 - syn of: Littorina mandshurica (L. von Schrenck, 1861) - (LITTORINIDAE)
- mandshurica elatior, Litorina mandshurica elatior L. von Schrenck, 1867 - syn of: Littorina mandshurica (L. von Schrenck, 1861) - (LITTORINIDAE)
- mandshurica laevigata, Litorina mandshurica laevigata L. von Schrenck, 1867 - syn of: Littorina mandshurica (L. von Schrenck, 1861) - (LITTORINIDAE)
- mandulana, Lodderia mandulana C. Beets, 1984 † - (SKENEIDAE) (FOSSIL)
- mandurahae, Costasiella mandurahae K.R. Jensen, 1997 - syn of: Costasiella mandorahae K.R. Jensen, 1997 - (COSTASIELLIDAE)
- mandyi, Gibberula mandyi J. Espinosa & J.A. Ortea, 2006 - (CYSTISCIDAE)
- manempetsaensis, Subulina manempetsaensis J. Germain, 1964 - (SUBULINIDAE)
- manendragarhensis, Eurydesma manendragarhensis Sahni & Dutt, 1959 † - (EURYDESMATIDAE) (FOSSIL)
- manerensis, Acanthohoplites manerensis M. Collignon, 1962 † - (DESHAYESITIDAE) (FOSSIL)
- manesol, Calliostoma manesol S.I. Huang & I.F. Fu, 2015 - (CALLIOSTOMATIDAE)
- manfredi, Calliphylloceras manfredi (Oppel, 1865 †) - (PHYLLOCERATIDAE) (FOSSIL)
- manfredoniensis, Pseudamnicola manfredoniensis A.J. Wagner, 1927 - syn of: Pseudamnicola conovula (G.R. von Frauenfeld, 1863) - (HYDROBIIDAE)
- mangae, Xerotricha mangae E. Gittenberger & J.G.M. Raven, 1982 - syn of: Xerotricha gonzalezi (M.F. Azpeitia, 1925) - (HYGROMIIDAE)
- Manganellia, Genus Manganellia M. Harzhauser & al., 2014 (DISCIDAE) (FOSSIL)
- manganellii, Platyla manganellii M. Harzhauser & al., 2015 † - (ACICULIDAE) (FOSSIL)
- manganellii, Alzoniella manganellii M. Bodon, S. Cianfanelli & E. Talenti, 1997 - (HYDROBIIDAE)
- Manganesepta, Genus Manganesepta J.H. McLean & D.L. Geiger, 1998 (FISSURELLIDAE)
- Mangansepta, syn of: Genus Manganesepta J.H. McLean & D.L. Geiger, 1998 (FISSURELLIDAE)
- Mangaoa, Genus Mangaoa C.M. Cooke & Y. Kondo, 1960 (ACHATINELLIDAE)
- mangaoparia, Drilliola mangaoparia (A.G. Beu, 1970 †) - (BORSONIIDAE) (FOSSIL)
- Mangaoparia, Genus Mangaoparia Vella, 1954 (CONOIDEA (UNASSIGNED)) (FOSSIL)
- mangaoparia, Pelicaria mangaoparia P. Vella, 1953 - syn of: Pelicaria vermis (T. Martyn, 1784) - (STRUTHIOLARIIDAE)
- mangarevae, Philonesia mangarevae H.B. Baker, 1940 - (EUCONULIDAE)
- mangarina, Cochlostyla electrica mangarina P. Bartsch, 1932 - (BRADYBAENIDAE)
- mangawera, Trichotropis mangawera (C.R. Laws, 1940 †) - (CAPULIDAE) (FOSSIL)
- Mangbuina, Genus Mangbuina Guo, 1988 (CYCLOCONCHIDAE) (FOSSIL)
- Mangelia, Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- Mangeliella, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- MANGELIIDAE Fischer, 1883 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-NEOGASTROPODA [Order]-CONOIDEA [Superfamily])
- mangelioides, Cancellaria mangelioides L.A. Reeve, 1856 - syn of: Scalptia scalariformis (J.B.P.A. Lamarck, 1822) - (CANCELLARIIDAE)
- mangelioides, Columbella mangelioides L.A. Reeve, 1859 - syn of: Suturoglypta pretrii (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- mangelioides, Anachis mangelioides L.A. Reeve, 1859 - syn of: Suturoglypta pretrii (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- mangelioides, Trophon mangelioides R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- mangelioides, Nassa mangelioides L.A. Reeve, 1853 - syn of: Nassarius jonasii (R.W. Dunker, 1846) - (NASSARIIDAE)
- Mangelis, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- mangeloides, Anachis mangeloides L.A. Reeve, 1859 - syn of: Suturoglypta pretrii (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- mangeri, Metadimorphoceras mangeri W. Korn & Titus, 2011 † - (DIMORPHOCERATIDAE) (FOSSIL)
- mangeri, Kazakhstania mangeri Work & Mason, 2005 † - (GATTENDORFIIDAE) (FOSSIL)
- mangeri, Mangelia mangeri H.B. Preston, 1905 - (MANGELIIDAE)
- mangeri, Epistroboceras mangeri Niko & Mapes, 2016 † - (TRIGONOCERATIDAE) (FOSSIL)
- mangeri, Odontocymbiola mangeri H.B. Preston, 1901 - syn of: Odontocymbiola magellanica canigiai J. Vazquez & C.H. Caldini, 1992 - (VOLUTIDAE)
- Mangeroceras, Genus Mangeroceras Sturgeon, Windle, Mapes & Hoare, 1982 (WIEDEYOCERATIDAE) (FOSSIL)
- mangikiani, Viviparus mangikiani V.V. Bogachev, 1961 † - (VIVIPARIDAE) (FOSSIL)
- mangikiani singularis, Viviparus mangikiani singularis A.M. Popov, 1968 † - (VIVIPARIDAE) (FOSSIL)
- Mangilia, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- Mangiliella, syn of: Genus Mangelia A. Risso, 1826 (MANGELIIDAE)
- mangilopse, Uromitra mangilopse J. Gardner, 1937 † - (COSTELLARIIDAE) (FOSSIL)
- Mangkalia, Subgenus Turbinella (Mangkalia) Beets, 1941 (TURBINELLIDAE) (FOSSIL)
- mangkalihatensis, Anadara mangkalihatensis C. Beets, 1941 † - (ARCIDAE) (FOSSIL)
- mangkalihatensis, Nassarius mangkalihatensis C. Beets, 1941 † - (NASSARIIDAE) (FOSSIL)
- mangkangunga, Sepiella mangkangunga D.G. Reid & C.C. Lu, 1998 - (SEPIIDAE)
- mangle, Xenostrobus mangle (K.W. Ockelmann, 1983) - (MYTILIDAE)
- mangle, Limnoperna mangle K.W. Ockelmann, 1983 - syn of: Xenostrobus mangle (K.W. Ockelmann, 1983) - (MYTILIDAE)
- mangle, Crassostrea mangle Amaral & L.R.L. Simone, 2014 - (OSTREIDAE)
- mangokyanus, Kalidos mangokyanus E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1965 - (ARIOPHANTIDAE)
- mangoldae, Asperoteuthis mangoldae A.T. Young, M. Vecchione & C.F.E. Roper, 2007 - (CHIROTEUTHIDAE)
- mangoldi, Zamaiceras mangoldi Rakús & Guex, 2002 † - (COELOCERATIDAE) (FOSSIL)
- mangoldi, Microeledone mangoldi M.D. Norman, F.G. Hochberg & R. Boucher-Rodoni, 2004 - (OCTOPODIDAE)
- Mangoldiceras, Genus Mangoldiceras Yin & Chandler, 2016 (MORPHOCERATIDAE) (FOSSIL)
- Mangonuia, syn of: Genus Pseudomalaxis P. Fischer, 1885 (ARCHITECTONICIDAE)
- Mangonuia, syn of: Genus Pseudomalaxis P. Fischer, 1885 (ARCHITECTONICIDAE)
- mangonuica, Fusceulima mangonuica (A.W.B. Powell, 1940) - (EULIMIDAE)
- mangonuica, Eulima mangonuica A.W.B. Powell, 1940 - syn of: Fusceulima mangonuica (A.W.B. Powell, 1940) - (EULIMIDAE)
- mangos, Terebralia mangos P.F. Röding, 1798 - syn of: Terebralia sulcata (I. von Born, 1778) - (POTAMIDIDAE)
- mangrovum, Cerithium mangrovum W.K.C. Sun & Zhang, 2014 - (CERITHIIDAE)
- manguensis, Melanoides manguensis K.H.J. Thiele, 1928 - (THIARIDAE)
- Mangyschlakella, Genus Mangyschlakella M.R. Cooper, 2015 (PTEROTRIGONIIDAE) (FOSSIL)
- Mangyshlakites, Genus Mangyshlakites Shevyrev , 1968 (COLUMBITIDAE) (FOSSIL)
- manhattensis, Venus manhattensis T. Prime, 1862 - syn of: Gemma gemma (J.G. Totten, 1834) - (VENERIDAE)
- manhongensis, Sinotaia manhongensis (Zhang, H.X. Liu & Wang, 1981) - (VIVIPARIDAE)
- mani, Farcimen mani (F. Poey, 1851) - (MEGALOMASTOMIDAE)
- manica, Anodonta manica G. Servain, 1882 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- manicata, Tritonia manicata G.P. Deshayes, 1853 - (TRITONIIDAE)
- maniculatum, Verpa maniculatum R.A. Philippi, 1836 - (PENICILLIDAE)
- manielensis, Chondropoma manielensis (P. Bartsch, 1946) - (POMATIIDAE)
- maniensis, Perdicella maniensis (L. Pfeiffer, 1856) - (ACHATINELLIDAE)
- maniensis, Leptachatina maniensis L. Pfeiffer, 1855 - (AMASTRIDAE)
- maniensis, Albinaria gerolimena maniensis W.A. Fauer, 1978 - (CLAUSILIIDAE)
- maniensis, Paratheba fruticola maniensis (I. Krynicki, 1833) - (HYGROMIIDAE)
- maniensis, Diallagites maniensis (Montesinos, 1987 †) - (WERNEROCERATIDAE) (FOSSIL)
- manierorum, Umbilidelos manierorum J. Stanisic, 2010 - (RHYTIDIDAE)
- manifesta, Philippia manifesta T. Iredale, 1931 - syn of: Psilaxis oxytropis (A. Adams, 1855) - (ARCHITECTONICIDAE)
- manifesta, Crassatella manifesta Berezovsky, 2010 † - (CRASSATELLIDAE) (FOSSIL)
- manifesta, Curveulima manifesta C.F. Laseron, 1955 - (EULIMIDAE)
- manifesta, Prionovolva manifesta (T. Iredale, 1936) - (OVULIDAE)
- manifesta, Pruvotina manifesta M. Zamarro, Ó. García-Álvarez & V. Urgorri, 2013 - (PRUVOTINIDAE)
- manifesta, Syrnola manifesta C. Hedley, 1912 - (PYRAMIDELLIDAE)
- manikiensis, Stosicia manikiensis W.J. Sleurs, 1996 - (ZEBINIDAE)
- manilana, Cochlostyla rufogastra manilana P. Bartsch, 1932 - (BRADYBAENIDAE)
- manilense, Elasmias manilense (W.L.H. Dohrn, 1863) - (ACHATINELLIDAE)
- manilensis, Palmadusta saulae manilensis L. Raybaudi Massilia, 1978 - (CYPRAEIDAE)
- manilensis, Corbicula manilensis R.A. Philippi, 1844 - (CYRENIDAE)
- manilensis, Cyrena manilensis K.T. Menke, 1841 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- manilensis, Barnea manilensis (R.A. Philippi, 1847) - (PHOLADIDAE)
- manilensis, Syrnola manilensis O. Böttger, 1896 - (PYRAMIDELLIDAE)
- manilensis elongata, Barnea manilensis elongata S. Tchang, C.Y. Tsi & K. Li, 1960 - (PHOLADIDAE)
- manilensis inornata, Barnea manilensis inornata H.A. Pilsbry, 1895 - (PHOLADIDAE)
- manillae, Pholas manillae G.B. Sowerby, 1849 - syn of: Barnea manilensis (R.A. Philippi, 1847) - (PHOLADIDAE)
- manillae, Costellipitar manillae (G.B. II Sowerby, 1851) - (VENERIDAE)
- manillae, Pitar manillae K.H. Barnard, 1964 - syn of: Costellipitar madecassinus (E. Fischer-Piette & D. Delmas, 1967) - (VENERIDAE)
- manillae, Pitar manillae G.B. II Sowerby, 1851 - syn of: Costellipitar manillae (G.B. II Sowerby, 1851) - (VENERIDAE)
- Maningrida, Genus Maningrida R.E. Golding, W.F. Ponder & M.M. Byrne, 2007 (MANINGRIDIDAE)
- MANINGRIDIDAE Golding, Ponder & Byrne, 2007 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-HYGROPHILA [Order]-AMPHIBOLOIDEA [Superfamily])
- maniobraensis, Eocypraea maniobraensis R.L. Squires & Advocate, 1986 † - (EOCYPRAEIDAE) (FOSSIL)
- manipurensis, Natica manipurensis Sijagurumayum, Singh & Kachhara, 2014 † - (NATICIDAE) (FOSSIL)
- manipurensis, Protonoetia manipurensis Sijagurumayum, Singh & Kachhara, 2014 † - (NOETIIDAE) (FOSSIL)
- manitesta, Glycymeris manitesta Berezovsky, 2015 † - (GLYCYMERIDIDAE) (FOSSIL)
- manitobense, Cyrtoceras manitobense J.J.F. Whiteaves, 1890 † - syn of: Westonoceras rnanitobense (J.J.F. Whiteaves, 1890 †) - (ONCOCERIDA (unassigned)) (FOSSIL)
- manitobense, Westonoceras manitobense (J.J.F. Whiteaves, 1890 †) - (WESTONOCERATIDAE) (FOSSIL)
- manitobensis, Carydium manitobensis (J.J.F. Whiteaves, 1892 †) - (CARYDIIDAE) (FOSSIL)
- manitobensis, Naticopsis manitobensis J.J.F. Whiteaves, 1892 † - (DELPHINULOPSIDAE) (FOSSIL)
- manitobensis, Maclurina manitobensis (J.J.F. Whiteaves, 1890 †) - (MACLURITIDAE) (FOSSIL)
- manitobensis, Omphalocirrus manitobensis J.J.F. Whiteaves, 1890 † - (OMPHALOCIRRIDAE) (FOSSIL)
- manitobensis, Porcellia manitobensis J.J.F. Whiteaves, 1892 † - (PORCELLIIDAE) (FOSSIL)
- manitobensis acuta, Maclurina manitobensis acuta Parks, 1913 † - (MACLURITIDAE) (FOSSIL)
- manitobensis ovalis, Maclurina manitobensis ovalis Wilson, 1931 † - (MACLURITIDAE) (FOSSIL)
- Manitobiella, Genus Manitobiella Blodgett & Frύda, 1999 (GOSSELETINIDAE) (FOSSIL)
- manitouense, Robsonoceras manitouense Ulrich & al., 1944 † - (ELLESMEROCERATIDAE) (FOSSIL)
- manitouense, Plectoceras manitouense Flower † - (PLECTOCERATIDAE) (FOSSIL)
- manitouense, Protocycloceras manitouense Ulrich & al., 1944 † - (PROTOCYCLOCERATIDAE) (FOSSIL)
- manitouliensis, Paupospira manitouliensis (Foerste, 1924 †) - (LOPHOSPIRIDAE) (FOSSIL)
- manitoulinense, Billingsites manitoulinense (Foerste, 1924 †) - (BEYRICHITIDAE) (FOSSIL)
- manitoulinense, Sactoceras manitoulinense Foerste, 1924 † - (POLYDESMIIDAE) (FOSSIL)
- manitoulinensis, Ischyrodonta manitoulinensis Foerste, 1924 † - (ISCHYRODONTIDAE) (FOSSIL)
- manitoulinensis, Lophospira manitoulinensis Foerste, 1924 † - (LOPHOSPIRIDAE) (FOSSIL)
- manitoulinensis, Modiolopsis manitoulinensis Foerste, 1924 † - (MODIOMORPHIDAE) (FOSSIL)
- manitoulinensis, Vallatotheca manitoulinensis Foerste, 1914 † - syn of: Vallatotheca manitoulini Foerste, 1914 † - (PROPLINIDAE) (FOSSIL)
- manitoulini, Vallatotheca manitoulini Foerste, 1914 † - (PROPLINIDAE) (FOSSIL)
- Manitoulinoceras, Genus Manitoulinoceras Foerste, 1924 (VALCOUROCERATIDAE) (FOSSIL)
- Manitouoceras, Genus Manitouoceras Ulrich, Foerste, Miller & Unklesbay, 1944 (PROTEROCAMEROCERATIDAE) (FOSSIL)
- maniyaraensis, Indolyria maniyaraensis M. Harzhauser & al., 2009 † - (VOLUTIDAE) (FOSSIL)
- manja, Parvedentulina manja K.C. Emberton, 2002 - (STREPTAXIDAE)
- manjiense, Obataceras manjiense Y. Shigeta, Futakami & M.H. Hoffmann, 2012 † - (GAUDRYCERATIDAE) (FOSSIL)
- Manjoceras, Genus Manjoceras Zhuravleva, 1972 (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- manlaysa, Calocochlia roissyana manlaysa P. Bartsch, 1938 - (BRADYBAENIDAE)
- manmuensis, Unionites manmuensis Reed, 1927 † - (TRIGONODIDAE) (FOSSIL)
- mannarense, Dentalium mannarense R. Winckworth, 1927 - (DENTALIIDAE)
- mannarensis, Aeolidiella mannarensis Subba Rao & Alagarswami, 1960 - (AEOLIDIIDAE)
- mannarensis, Eubranchus mannarensis Subba Rao, 1968 - (EUBRANCHIDAE)
- mannensis, Semotrachia mannensis T. Iredale, 1937 - (CAMAENIDAE)
- manneringi, Smeagol manneringi (F.M. Climo, 1980) - (SMEAGOLIDAE)
- manneringi, Leptopyrgus manneringi (F.M. Climo, 1974) - (TATEIDAE)
- manni, Placostylus manni W.F. Clapp, 1923 - (BOTHRIEMBRYONTIDAE)
- manni, Littoridina manni F.C. Baker, 1913 - (COCHLIOPIDAE)
- manni, Chondropoma lindenianum manni (W.J. Clench & C.G. Aguayo) - (POMATIIDAE)
- manni, Kanapa manni W.J. Clench, 1949 - (PUPINIDAE)
- manni, Poeycoptis lituus manni C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- mannii, Dicyathifer mannii (B.H. Wright, 1866) - (TEREDINIDAE)
- mannii, Teredo mannii B.H. Wright, 1866 - syn of: Dicyathifer mannii (B.H. Wright, 1866) - (TEREDINIDAE)
- mannii, Kuphus mannii B.H. Wright, 1866 - syn of: Dicyathifer mannii (B.H. Wright, 1866) - (TEREDINIDAE)
- manningi, Leuconopsis manningi A.M. de F. Martins, 1996 - (ELLOBIIDAE)
- manningi, Brotia manningi R.A.M. Brandt, 1974 - (PACHYCHILIDAE)
- Manningiella, Genus Manningiella R.A.M. Brandt, 1970 (LITHOGLYPHIDAE)
- mannophorus, Latirus mannophorus (J.C. Melvill, 1891) - (FASCIOLARIIDAE)
- Manobittium, syn of: Genus Bittium W.E. Leach in J.E. Gray, 1847 (CERITHIIDAE)
- manoeli, Drymaeus manoeli (S. Moricand, 1833) - (BULIMULIDAE)
- manoeli, Dallocardia manoeli A.C.G. Prado, 1993 - syn of: Dallocardia manueli (A.C.G. Prado, 1993) - (CARDIIDAE)
- manoeli, Neritina manoeli W.L.H. Dohrn, 1866 - syn of: Neritilia manoeli (W.L.H. Dohrn, 1866) - (NERITIDAE)
- manoeli, Neritilia manoeli (W.L.H. Dohrn, 1866) - (NERITILIIDAE)
- manoeli, Homorus manoeli H.B. Preston, 1910 - syn of: Homorus manueli H.B. Preston, 1910 - (SUBULINIDAE)
- manolae, Thala manolae H. Turner, S. Gori & R. Salisbury, 2007 - (COSTELLARIIDAE)
- manoloi, Turbonilla manoloi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- manolorolani, Turbonilla manolorolani A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- Manoloviceras, Genus Manoloviceras Vasνcek & Wiedmann, 1994 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- manomaensis, Lymnaea manomaensis N.D. Kruglov & Y.I. Starobogatov, 1984 - (LYMNAEIDAE)
- manomboae, Parvedentulina manomboae K.C. Emberton, 2002 - (STREPTAXIDAE)
- manomponae, Parvedentulina manomponae K.C. Emberton, 2002 - (STREPTAXIDAE)
- manonegra, Chrysallida manonegra A. Peñas & E. Rolán, 1998 - (PYRAMIDELLIDAE)
- manonellesi, Bithynia manonellesi C.R. Altaba, 2007 - (BITHYNIIDAE)
- manorae, Pyrgulina manorae J.C. Melvill, 1898 - syn of: Turbonilla mumia (C.B. Adams, 1861) - (PYRAMIDELLIDAE)
- manorae, Turbonilla manorae J.C. Melvill, 1898 - syn of: Turbonilla mumia (C.B. Adams, 1861) - (PYRAMIDELLIDAE)
- manotiana, Chondrina manotiana C.A. Westerlund, 1894 - syn of: Chondrina farinesii sexplicata A. Bofill, 1886 - (CHONDRINIDAE)
- manotrika, Kalidos manotrika K.C. Emberton, 2010 - (ARIOPHANTIDAE)
- Manotrochus, syn of: Genus Jujubinus T.A. de M. Monterosato, 1884 (TROCHIDAE)
- manoui, Domiporta manoui Y.F. Huang, 2011 - (MITRIDAE)
- manriquei, Elysia manriquei J.A. Ortea & L. Moro, 2009 - (PLAKOBRANCHIDAE)
- Manselia, syn of: Genus Leioceras Chandler & Callomon, 2009 (GRAPHOCERATIDAE) (FOSSIL)
- manselli, Albinaria teres manselli (O. Böttger, 1883) - (CLAUSILIIDAE)
- manselli xerokampensis, Albinaria manselli xerokampensis V. Wiese, 1990 - syn of: Albinaria teres xerokampensis V. Wiese, 1990 - (CLAUSILIIDAE)
- Mansellia, Genus Mansellia Cossmann, 1901 (GRAPHOCERATIDAE) (FOSSIL)
- mansfeldi, Ussurites mansfeldi Kummel, 1969 † - (USSURITIDAE) (FOSSIL)
- Mansfieldella, Subgenus Olivella (Mansfieldella) A.A. Olsson & A. Harbison, 1953 (OLIVELLIDAE) (FOSSIL)
- mansfieldense, Platyceras mansfieldense Tassell, 1977 † - (PLATYCERATIDAE) (FOSSIL)
- mansfieldi, Pachycrommium mansfieldi E.J. Petuch, 1997 † - (AMPULLINIDAE) (FOSSIL)
- mansfieldi, Busycotypus mansfieldi E.J. Petuch, 1994 † - (BUSYCONIDAE) (FOSSIL)
- mansfieldi, Corbula inaequalis mansfieldi H.G. Richards, 1947 † - (CORBULIDAE) (FOSSIL)
- mansfieldi, Cardiomya mansfieldi A.A. Olsson & A. Harbison, 1953 † - (CUSPIDARIIDAE) (FOSSIL)
- mansfieldi, Siphocypraea mansfieldi E.J. Petuch, 1998 † - (CYPRAEIDAE) (FOSSIL)
- mansfieldi, Ecphora mansfieldi E.J. Petuch, 1989 † - (MURICIDAE) (FOSSIL)
- mansfieldi, Babelomurex mansfieldi (J.T.L. McGinty, 1940) - (MURICIDAE)
- mansfieldi, Anodontites mansfieldi W.B. Marshall, 1928 - syn of: Anodontites patagonica J.B.P.A. Lamarck, 1819 - (MYCETOPODIDAE)
- mansfieldi, Dactylidia mansfieldi A.A. Olsson, 1956 † - (OLIVELLIDAE) (FOSSIL)
- mansfieldi, Oliva mansfieldi E.J. Petuch, 1994 † - (OLIVIDAE) (FOSSIL)
- mansfieldi, Argopecten mansfieldi W.P. Woodring, 1925 † - syn of: Argopecten uselmae H.A. Pilsbry & Johnson, 1917 † - (PECTINIDAE) (FOSSIL)
- mansfieldi, Psamosolen mansfieldi E.H. Vokes, 1938 † - (SOLENIDAE) (FOSSIL)
- mansfieldi, Broderiptella mansfieldi A.A. Olsson, 1967 † - (TURRITELLIDAE) (FOSSIL)
- mansfieldi, Ussurites mansfieldi Kummel, 1969 † - (USSURITIDAE) (FOSSIL)
- mansfieldi, Scaphella mansfieldi E.J. Petuch, 1994 † - (VOLUTIDAE) (FOSSIL)
- mansfieldi, Lyria mansfieldi W.H. Dall, 1916 † - (VOLUTIDAE) (FOSSIL)
- mansfieldianus, Bellerophon mansfieldianus Girty, 1927 † - (BELLEROPHONTIDAE) (FOSSIL)
- manshurica, Arvella manshurica P. Bartsch in O.A. Scarlato, 1960 - (MYTILIDAE)
- mansiana, Melanopsis mansiana Noulet, 1854 † - (MELANOPSIDAE) (FOSSIL)
- mansitii, Maoricardium mansitii (Y. Otuka, 1937) - (CARDIIDAE)
- mansonensis, Microcystina mansonensis O.F. von Möllendorff, 1901 - (ARIOPHANTIDAE)
- mansonensis, Chloritis mansonensis (G.P.L.K. Gude, 1906) - (CAMAENIDAE)
- mansonensis, Oospira mansonensis O.F. von Möllendorff, 1901 - syn of: Oospira semipolita mansonensis (O.F. von Möllendorff, 1901) - (CLAUSILIIDAE)
- mansonensis, Oospira semipolita mansonensis (O.F. von Möllendorff, 1901) - (CLAUSILIIDAE)
- mansonensis, Coccoderma messageri mansonensis (O.F. von Möllendorff, 1901) - (ENIDAE)
- mansueta, Ventopelita mansueta (L.A. Reeve, 1854) - (CAMAENIDAE)
- mansuetum, Praelioceras mansuetum Fucini, 1929 † - syn of: Lioceratoides serotinum (E. Bettoni, 1900 †) - (HILDOCERATIDAE) (FOSSIL)
- mansuyi, Joleaudella mansuyi Patte, 1929 † - (BELLEROPHONTIDAE) (FOSSIL)
- mansuyi, Camaena mansuyi P. Dautzenberg & H. Fischer, 1906 - (CAMAENIDAE)
- mansuyi, Mansuyiella mansuyi (P. Dautzenberg & H. Fischer, 1908) - (CLAUSILIIDAE)
- mansuyi, Meekospira mansuyi (Delpey, 1941 †) - (MEEKOSPIRIDAE) (FOSSIL)
- mansuyi, Costatoria mansuyi Reed, 1927 † - (MYOPHORIIDAE) (FOSSIL)
- mansuyi, Sicradiscus mansuyi (G.P.L.K. Gude, 1908) - (PLECTOPYLIDAE)
- mansuyi, Elma mansuyi (P. Dautzenberg & H. Fischer, 1905) - (STREPTAXIDAE)
- mansuyi, Subulites mansuyi Delpey, 1941 † - syn of: Meekospira mansuyi (Delpey, 1941 †) - (SUBULITIDAE) (FOSSIL)
- mansuyi, Lamprotula mansuyi (P. Dautzenberg & H. Fischer, 1908) - (UNIONIDAE)
- mansuyi, Anularya mansuyi (P. Dautzenberg & H. Fischer, 1906) - (VIVIPARIDAE)
- mansuyi, Margarya mansuyi P. Dautzenberg & H. Fischer, 1906 - syn of: Anularya mansuyi (P. Dautzenberg & H. Fischer, 1906) - (VIVIPARIDAE)
- mansuyi bicostata, Margarya mansuyi bicostata S. Tchang & C.Y. Tsi, 1949 - syn of: Anularya mansuyi (P. Dautzenberg & H. Fischer, 1906) - (VIVIPARIDAE)
- mansuyi depressa, Camaena mansuyi depressa P. Dautzenberg & H. Fischer, 1906 - (CAMAENIDAE)
- mansuyi ootanii, Mansuyiella mansuyi ootanii H. Nordsieck, 2007 - (CLAUSILIIDAE)
- Mansuyia, syn of: Subgenus Dautzenbergiella (Mansuyiella) H. Nordsieck, 2003 (CLAUSILIIDAE)
- Mansuyiella, Subgenus Dautzenbergiella (Mansuyiella) H. Nordsieck, 2003 (CLAUSILIIDAE)
- manta, Kalidos manta K.C. Emberton, 2010 - (ARIOPHANTIDAE)
- manta, Strioterebrum manta H.A. Pilsbry & A.A. Olsson, 1941 † - (TEREBRIDAE) (FOSSIL)
- mantachieensis, Eucycloscala mantachieensis N.F. Sohl, 1964 † - (EUCYCLOSCALIDAE) (FOSSIL)
- mantachieensis, Urceolabrum mantachieensis N.F. Sohl, 1964 † - (PICKWORTHIIDAE) (FOSSIL)
- mantaensis, Papyridea mantaensis A.A. Olsson, 1961 - syn of: Papyridea hiulcum (L.A. Reeve, 1845) - (CARDIIDAE)
- mantaensis, Papyridea mantaensis A.A. Olsson, 1961 - syn of: Papyridea hiulcum (L.A. Reeve, 1845) - (CARDIIDAE)
- mantaensis, Tellina inaequistriata mantaensis H.A. Pilsbry & A.A. Olsson, 1943 - (TELLINIDAE)
- mantana, Yoldiella mantana W.H. Dall, 1908 - syn of: Ledella dicella (W.H. Dall, 1908) - (YOLDIIDAE)
- mantana, Yoldia mantana W.H. Dall, 1908 - syn of: Ledella dicella (W.H. Dall, 1908) - (YOLDIIDAE)
- mantangulensis, Helicostyla satyrus mantangulensis (P. Bartsch, 1919) - (BRADYBAENIDAE)
- mantaroensis, Parabalea latestriata mantaroensis W.K. Weyrauch, 1963 - (CLAUSILIIDAE)
- mantaroensis, Parabalea decimvolvis mantaroensis W.K. Weyrauch, 1967 - (CLAUSILIIDAE)
- mantei, Barguesiella mantei Frau & al., 2016 † - (HETEROCERATIDAE) (FOSSIL)
- manteia, Cardita manteia C.J. Maury, 1924 † - (CARDITIDAE) (FOSSIL)
- mantelianus, Fusinus mantelianus A. Risso, 1826 - syn of: Fusinus rostratus (A.G. Olivi, 1792) - (FASCIOLARIIDAE)
- mantelli, Mantelliceras mantelli (J. de C. Sowerby, 1814 †) - (ACANTHOCERATIDAE) (FOSSIL)
- mantelli, Ammonites mantelli Sowerby, 1814 † - syn of: Mantelliceras mantelli (J. de C. Sowerby, 1814 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- mantelli, Anatoma mantelli S. Woodward, 1859 - syn of: Anatoma flemingi (B.A. Marshall, 2002) - (ANATOMIDAE)
- mantelli, Ancyloceras mantelli T.L. Casey, 1960 † - (ANCYLOCERATIDAE) (FOSSIL)
- mantelli, Dentalium mantelli C.A. von Zittel, 1865 † - (DENTALIIDAE) (FOSSIL)
- mantelli, Murexiella mantelli (T.A. Conrad, 1834 †) - (MURICIDAE) (FOSSIL)
- mantelli, Lewesiceras mantelli Wright & Wright, 1951 † - (PACHYDISCIDAE) (FOSSIL)
- mantelli, Planorbarius mantelli (R.W. Dunker, 1848 †) - (PLANORBIDAE) (FOSSIL)
- mantelli, Scissurella mantelli S. Woodward, 1859 - syn of: Anatoma flemingi (B.A. Marshall, 2002) - (SCISSURELLIDAE)
- mantelli, Turbo mantelli Leymerie, 1842 - (TURBINIDAE)
- mantelli, Hypoturrilites mantelli (Sharpe, 1857 †) - (TURRILITIDAE) (FOSSIL)
- mantelliana, Mimachlamys mantelliana (Orbigny, 1847 †) - (PECTINIDAE) (FOSSIL)
- Mantelliceras, Genus Mantelliceras Hyatt , 1903 (ACANTHOCERATIDAE) (FOSSIL)
- Mantellina, Genus Mantellina Sacco, 1904 (LIMIDAE)
- mantellum, Cypraea mantellum J.G. Walls & C.M. Burgess, 1980 - syn of: Annepona mariae (F.A. Schilder, 1927) - (CYPRAEIDAE)
- mantellum, Annepona mantellum J.G. Walls & C.M. Burgess, 1980 - syn of: Annepona mariae (F.A. Schilder, 1927) - (CYPRAEIDAE)
- Mantellum, Subgenus Lima (Mantellum) Rφding, 1798 (LIMIDAE) (FOSSIL)
- Mantellum, syn of: Genus Limaria J.H.F. Link, 1807 (LIMIDAE)
- mantensis, Engina mantensis P. Bartsch, 1928 - (BUCCINIDAE)
- mantichora, Oliva mantichora P.L. Duclos, 1835 - (OLIVIDAE)
- Manticoceras, Genus Manticoceras Miller, 1938 (GEPHUROCERATIDAE) (FOSSIL)
- manticoides, Chutoceras manticoides (Becker & House, 2000 †) - (ACANTHOCLYMENIIDAE) (FOSSIL)
- manticoides, Uchtites manticoides Becker & House, 2000 † - syn of: Chutoceras manticoides (Becker & House, 2000 †) - (PONTICERATIDAE) (FOSSIL)
- Manticula, Genus Manticula Waterhouse, 1960 (MANTICULIDAE) (FOSSIL)
- MANTICULIDAE Waterhouse, 2008 - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-PECTINIDA [Order]-EURYDESMATOIDEA [Superfamily]) (FOSSIL)
- Mantissa, syn of: Genus Mentissa H. Adams & A. Adams, 1855 (CLAUSILIIDAE)
- mantongensis, Giardia mantongensis (W. Kobelt, 1899) - (BRADYBAENIDAE)
- mantouensis, Hyolithes mantouensis Resser & Endo, 1937 † - (HYOLITHIDAE) (FOSSIL)
- mantovani, Conus mantovani Seguenza, 1880 † - (CONIDAE) (FOSSIL)
- manuana, Succinea manuana A.A. Gould - (SUCCINEIDAE)
- manuanense, Manuaniceras manuanense Spath, 1925 † - syn of: Elobiceras spathianum F. Haas, 1942 † - (BRANCOCERATIDAE) (FOSSIL)
- manuanense, Pseudophacoceras manuanense Spath 1925 † - (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- manuanensis, Cymatoceras manuanensis Crick, 1907 † - (CYMATOCERATIDAE) (FOSSIL)
- Manuaniceras, Subgenus Oxytropidoceras (Manuaniceras) Collignon, 1936 (BRANCOCERATIDAE) (FOSSIL)
- manubriata, Ostrea manubriata R. Tate, 1887 † - (OSTREIDAE) (FOSSIL)
- manubriatus, Murex manubriatus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- manubriatus, Gymnarus manubriatus (W.M. Gabb, 1864 †) - (PUGNELLIDAE) (FOSSIL)
- manubrium, Ascoceras manubrium Lindström, 1890 † - (ASCOCERATIDAE) (FOSSIL)
- manuelae, Filifusus manuelae (L. Bozzetti, 2008) - (FASCIOLARIIDAE)
- manuelae, Apricardia manuelae Mainelli, 1995 † - (REQUIENIIDAE) (FOSSIL)
- manueli, Labyrinthus manueli H.C. Higgins, 1872 - (CAMAENIDAE)
- manueli, Dallocardia manueli (A.C.G. Prado, 1993) - (CARDIIDAE)
- manueli, Cameroceras manueli Gil, 1988 † - (ENDOCERATIDAE) (FOSSIL)
- manueli, Corrosella manueli (D. Delicado, Machordom & M.A. Ramos, 2012) - (HYDROBIIDAE)
- manueli, Homorus manueli H.B. Preston, 1910 - (SUBULINIDAE)
- manueli, Pseudodon manueli Konopleva, Kondakov & Vikhrev, 2017 - (UNIONIDAE)
- manuellae, Mitra manuellae T. Cossignani & V. Cossignani, 2006 - (MITRIDAE)
- manueltenorioi, Chelyconus manueltenorioi B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (CONIDAE) (FOSSIL)
- manugiensis, Aspastus miltocheilus manugiensis B. Rensch, 1931 - (BOTHRIEMBRYONTIDAE)
- manuherikia, Charopa manuherikia B.A. Marshall & T.H. Worthy, 2017 † - (CHAROPIDAE) (FOSSIL)
- manuherikia, Latia manuherikia B.A. Marshall, 2011 † - (LATIIDAE) (FOSSIL)
- manuiensis, Nanonavis manuiensis Kalishevich, 1981 † - (PARALLELODONTIDAE) (FOSSIL)
- manukauensis, Maoriscaphander manukauensis R.K. Dell, 1950 † - (CYLICHNIDAE) (FOSSIL)
- manukauensis, Neoguraleus manukauensis A.W.B. Powell, 1942 - (MANGELIIDAE)
- manukauensis, Odostomia manukauensis C.R. Laws, 1939 - (PYRAMIDELLIDAE)
- manukauensis, Maoricolpus roseus manukauensis A.W.B. Powell, 1931 - (TURRITELLIDAE)
- manulia, Manulicula manulia (Barrande, 1881 †) - (PRAECARDIIDAE) (FOSSIL)
- Manulica, Genus Manulica (PRAECARDIOIDEA (UNASSIGNED)) (FOSSIL)
- Manulicula, Genus Manulicula Krν, 1967 (PRAECARDIIDAE) (FOSSIL)
- Manulona, Genus Manulona Ludbrook, 1941 (BATILLARIIDAE) (FOSSIL)
- manumbensis, Streptostele manumbensis K.C. Emberton, 1994 - (STREPTAXIDAE)
- manumboensis, Kalidos manumboensis K.C. Emberton, 1994 - (ARIOPHANTIDAE)
- manumissa, Tellina manumissa J.C. Melvill, 1898 - (TELLINIDAE)
- Manupecten, Genus Manupecten T.A. de M. Monterosato, 1872 (PECTINIDAE)
- manupictus, Mesembrinus manupictus (L.A. Reeve, 1848) - (BULIMULIDAE)
- Manureva, Subgenus Lamprocystis (Manureva) F.C. Baker, 1940 (EUCONULIDAE)
- manuscripta, Cerithium vulgatum manuscripta T.A. de M. Monterosato, 1917 - (CERITHIIDAE)
- manusensis, Margarites manusensis S.-Q. Zhang & S.-P. Zhang, 2017 - (MARGARITIDAE)
- manusensis, Bathymodiolus manusensis J. Hashimoto & Furuta, 2007 - (MYTILIDAE)
- manusensis, Lamellomphalus manusensis S.-Q. Zhang & S.-P. Zhang, 2017 - (NEOMPHALIDAE)
- manusutor, Taylorina manusutor R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- manwaii, Naquetia manwaii R. Houart & V. Héros, 2013 - (MURICIDAE)
- manx, Gastropteron rubrum manx Ev. Marcus & Er. Marcus, 1966 - (GASTROPTERIDAE)
- manzakiana, Herviera manzakiana (Yokoyama, 1922) - (PYRAMIDELLIDAE)
- manzakiana, Rissoina manzakiana Yokoyama, 1922 † - (RISSOINIDAE) (FOSSIL)
- Manzanella, Genus Manzanella Girty, 1909 (MANZANELLIDAE) (FOSSIL)
- MANZANELLIDAE Chronic, 1952 - Family (BIVALVIA-PROTOBRANCHIA [Subclass]-SOLEMYIDA [Order]-MANZANELLOIDEA [Superfamily]) (FOSSIL)
- manzaneti, Tuba manzaneti L.W. Stephenson † - (MATHILDIDAE) (FOSSIL)
- manzanicum, Manzanospira manzanicum (Girty, 1909 †) - (LOPHOSPIRIDAE) (FOSSIL)
- manzanillaensis, Conus aemulator manzanillaensis W.C. Mansfield, 1925 † - (CONIDAE) (FOSSIL)
- manzanillaensis, Drillia manzanillaensis W.C. Mansfield, 1925 † - (DRILLIIDAE) (FOSSIL)
- manzanillensis, Caryocorbula manzanillensis C.J. Maury, 1925 † - (CORBULIDAE) (FOSSIL)
- manzanillensis, Epitonium manzanillensis L.G. Hertlein & A.M. Strong, 1951 - syn of: Epitonium emydonesus W.H. Dall, 1917 - (EPITONIIDAE)
- manzanillensis, Melaniella manzanillensis (J. Gundlach in L. Pfeiffer, 1857) - (OLEACINIDAE)
- manzanillensis, Polycera manzanillensis J.A. Ortea, J. Espinosa & Y. Camacho-García, 1999 - syn of: Polycera manzanilloensis J.A. Ortea, J. Espinosa & Y. Camacho-García, 1999 - (POLYCERIDAE)
- manzanillensis, Cochlodinella manzanillensis (C. de la Torre, 1930) - (UROCOPTIDAE)
- manzanilloensis, Polycera manzanilloensis J.A. Ortea, J. Espinosa & Y. Camacho-García, 1999 - (POLYCERIDAE)
- Manzanospira, Genus Manzanospira Batten, 1989 (LOPHOSPIRIDAE) (FOSSIL)
- manzimtotiensis, Marginella manzimtotiensis S.G. Veldsman, 2017 - (MARGINELLIDAE)
- Manzonia, Genus Manzonia . Brusina, 1870 (RISSOIDAE)
- manzoniana, Eulima manzoniana A. Issel, 1869 - (EULIMIDAE)
- manzoniana, Manzonia manzoniana (E. Rolán, 1987) - (RISSOIDAE)
- manzoniana, Onoba manzoniana E. Rolán, 1987 - syn of: Manzonia manzoniana (E. Rolán, 1987) - (RISSOIDAE)
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