- midae, Ellobium midae P.F. Röding, 1798 - syn of: Ellobium aurismidae (C. Linnaeus, 1758) - (ELLOBIIDAE)
- midae, Haliotis midae C. Linnaeus, 1758 - (HALIOTIDAE)
- midae elatior, Haliotis midae elatior H.A. Pilsbry, 1890 - syn of: Haliotis midae C. Linnaeus, 1758 - (HALIOTIDAE)
- midannulata, Hemipsila midannulata Mu & Ruan, 1983 † - (UNDASTRIATOSTYLIOLINIDAE) (FOSSIL)
- midareta, Orthotrigonia midareta Kobayashi & Mori 1955 † - (MYOPHORELLIDAE) (FOSSIL)
- midas, Plekocheilus midas J.A. Albers, 1852 - (AMPHIBULIMIDAE)
- midas, Bayerotrochus midas (F.M. Bayer, 1965) - (PLEUROTOMARIIDAE)
- midas, Turbonilla midas A. Pimenta & R.S. Absalão, 2004 - (PYRAMIDELLIDAE)
- midatlantica, Felimare midatlantica T.M. Gosliner, 1990 - syn of: Felimare tricolor (F.J. Cantraine, 1835) - (CHROMODORIDIDAE)
- midatlantica, Hypselodoris midatlantica T.M. Gosliner, 1990 - syn of: Felimare tricolor (F.J. Cantraine, 1835) - (CHROMODORIDIDAE)
- midatlantica, Pseudorimula midatlantica J.H. McLean, 1992 - (LEPETODRILIDAE)
- Middalya, Genus Middalya Dickins, 1956 (ASTARTIDAE) (FOSSIL)
- middendorffi, Karaftohelix middendorffi (G. Gerstfeldt, 1859) - (BRADYBAENIDAE)
- middendorffi, Volutopsius middendorffi (W.H. Dall, 1891) - (BUCCINIDAE)
- middendorffi, Buccinum middendorffi T.A. Verkrüzen, 1882 - syn of: Buccinum middendorfii T.A. Verkrüzen, 1882 - (BUCCINIDAE)
- middendorffi, Keenocardium californiense middendorffi A.I. Kafanov, 1999 - (CARDIIDAE)
- middendorffi, Gonatus middendorffi T. Kubodera & T.A. Okutani, 1981 - (GONATIDAE)
- middendorffi, Helix middendorffi A. Mousson, 1887 - syn of: Karaftohelix maackii (G. Gerstfeldt, 1859) - (HELICIDAE)
- middendorffi, Lymnaea middendorffi (W. Dybowski, 1904) - (LYMNAEIDAE)
- middendorffi, Margaritifera middendorffi (O.W. Von Rosen, 1926) - (MARGARITIFERIDAE)
- middendorffi, Mytilus middendorffi Grewingk † - (MYTILIDAE) (FOSSIL)
- middendorffi, Pseudoeuryptychites middendorffi Pavlov, 1914 † - (POLYPTYCHITIDAE) (FOSSIL)
- middendorffi, Turbonilla middendorffi P. Bartsch, 1927 - (PYRAMIDELLIDAE)
- middendorffi, Olenekoceras middendorffi (Keyserling, 1845 †) - (SIBIRITIDAE) (FOSSIL)
- middendorffi, Macoma middendorffi W.H. Dall, 1884 - (TELLINIDAE)
- middendorffi, Pseudanodonta middendorffi (Siemaschko, 1848) - (UNIONIDAE)
- middendorffi, Unio middendorffi C.A. Westerlund, 1890 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- middendorffi, Cincinna middendorffi (I.M. Moskvicheva, 1985) - (VALVATIDAE)
- middendorffi amatoris, Karaftohelix middendorffi amatoris (T.D.A. Cockerell, 1924) - (BRADYBAENIDAE)
- Middendorffia, syn of: Genus Lepidochitona J.E. Gray, 1821 (LEPIDOCHITONIDAE)
- middendorffiana, Neptunea middendorffiana G.E. MacGinitie, 1959 - syn of: Neptunea heros (J.E. Gray, 1850) - (BUCCINIDAE)
- middendorffiana, Admete middendorffiana W.H. Dall, 1885 - syn of: Admete viridula (O. Fabricius, 1780) - (CANCELLARIIDAE)
- middendorffii, Chiton middendorffii L. von Schrenck, 1861 - syn of: Mopalia middendorffii (L. von Schrenck, 1861) - (CHITONIDAE)
- middendorffii, Panopea middendorffii A. Adams, 1854 - syn of: Panomya norvegica (L. Spengler, 1793) - (HIATELLIDAE)
- middendorffii, Mopalia middendorffii (L. von Schrenck, 1861) - (MOPALIIDAE)
- middendorffii hirsuta, Mopalia middendorffii hirsuta Is. Taki, 1938 - (MOPALIIDAE)
- Middendorffinaia, Genus Middendorffinaia I.M. Moskvicheva & Y.I. Starobogatov, 1973 (UNIONIDAE)
- Middendorfia, Genus Middendorfia Dall, 1879 (CALLISTOPLACIDAE) (FOSSIL)
- middendorfii, Buccinum middendorfii T.A. Verkrüzen, 1882 - (BUCCINIDAE)
- middendorfii, Panomya middendorfii A. Adams, 1855 - syn of: Panomya norvegica (L. Spengler, 1793) - (HIATELLIDAE)
- middendorfii emphaticus, Volutopsius middendorfii emphaticus S. Kosuge, 1972 - syn of: Lussivolutopsius furukawai (K. Oyama, 1951) - (BUCCINIDAE)
- middendorfii emphaticus, Volutopsius middendorfii emphaticus W.H. Dall, 1907 - syn of: Lussivolutopsius emphaticus (W.H. Dall, 1907) - (BUCCINIDAE)
- middenense, Badistes middenense A. McLauchlan, 1954 - (CAMAENIDAE)
- middlemissi, Palaeolima middlemissi Nakazawa, 1981 † - (LIMIDAE) (FOSSIL)
- middlesexensis, Chesapecten middlesexensis (W.C. Mansfield, 1936 †) - (PECTINIDAE) (FOSSIL)
- middlesexensis ceccae, Chesapecten middlesexensis ceccae Ward, 1992 † - (PECTINIDAE) (FOSSIL)
- middletoni, Nordiceras middletoni House, 2002 † - (NORDICERATIDAE) (FOSSIL)
- middlevillense, Spyroceras middlevillense Foerste, 1928 † - (SPYROCERATIDAE) (FOSSIL)
- mideltiana, Xerosecta mideltiana (P.M. Pallary, 1920) - (HYGROMIIDAE)
- midfordensis, Punctaconchus midfordensis (Richardson, 1907 †) - (VIRIATELLIDAE) (FOSSIL)
- midiensis, Crassinella midiensis A.A. Olsson, 1922 † - (CRASSATELLIDAE) (FOSSIL)
- midiensis, Strioterebrum midiensis A.A. Olsson, 1922 - (TEREBRIDAE)
- midoensis, Acanthohoplites midoensis M. Collignon, 1962 † - (DESHAYESITIDAE) (FOSSIL)
- midori, Buccinum midori T. Habe & K. Itô, 1965 - syn of: Buccinum oedematum W.H. Dall, 1907 - (BUCCINIDAE)
- Midorigai, syn of: Genus Berthelinia J.C.H. Crosse, 1875 (JULIIDAE)
- midpacifica, Gymnobela midpacifica P. Stahlschmidt & M. Chino, 2012 - (RAPHITOMIDAE)
- midsoni, Charopa midsoni C.M.D.E. Legrand, 1871 - syn of: Thryasona diemenensis (J.C. Cox, 1868) - (CHAROPIDAE)
- midsoni, Helix midsoni C.M.D.E. Legrand, 1871 - syn of: Thryasona diemenensis (J.C. Cox, 1868) - (HELICIDAE)
- midwayense, Bittium midwayense S. Kosuge, 1979 - (CERITHIIDAE)
- midwayensis, Omphalotukaia midwayensis T.C. Lan, 1990 - syn of: Calliotropis midwayensis (T.C. Lan, 1990) - (CALLIOSTOMATIDAE)
- midwayensis, Calliotropis midwayensis (T.C. Lan, 1990) - (CALLIOTROPIDAE)
- midwayensis, Euchelus midwayensis T. Habe & S. Kosuge, 1970 - (CHILODONTIDAE)
- midwayensis, Nesiocypraea midwayensis M. Azuma & K. Kurohara, 1967 - (CYPRAEIDAE)
- midwayensis, Claviscala midwayensis T. Habe & S. Kosuge, 1970 - (EPITONIIDAE)
- midwayensis, Fusinus midwayensis S. Kosuge, 1979 - (FASCIOLARIIDAE)
- midwayensis, Subcancilla midwayensis S. Kosuge, 1979 - (MITRIDAE)
- midwayensis, Chlamys midwayensis T. Habe & T.A. Okutani, 1968 - syn of: Laevichlamys cuneata (L.A. Reeve, 1853) - (PECTINIDAE)
- midwayensis, Sassia midwayensis (T. Habe & T.A. Okutani, 1968) - (RANELLIDAE)
- midwayensis, Minolia midwayensis T. Shikama, 1977 - (SOLARIELLIDAE)
- midwayensis, Lyrodus midwayensis C.H. Edmondson, 1946 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- midwayensis, Bolma midwayensis (T. Habe & S. Kosuge, 1970) - (TURBINIDAE)
- midwayensis kontiki, Nesiocypraea midwayensis kontiki F.Jr. Lorenz, 2012 - (CYPRAEIDAE)
- midyetti, Poenia midyetti H.G. Richards, 1938 - (HELICINIDAE)
- mienanus, Gyraulus mienanus D.S. Brown, 1998 - (PLANORBIDAE)
- Mienerita, Subgenus Nerita (Mienerita) H. Dekker, 2000 (NERITIDAE)
- Mienerita, syn of: Genus Nerita C. Linnaeus, 1758 (NERITIDAE)
- Mieniplotia, Genus Mieniplotia Low & Tan, 2014 (THIARIDAE)
- mienisi, Cochlostoma mienisi H. Schütt, 1968 - (COCHLOSTOMATIDAE)
- mienisi, Zebrina mienisi E. Gittenberger, 1986 - (ENIDAE)
- mienisi, Islamia mienisi (H. Schütt, 1991) - (HYDROBIIDAE)
- mienisi, Mienisiella mienisi H. Schütt, 1991 - syn of: Islamia mienisi (H. Schütt, 1991) - (HYDROBIIDAE)
- mienisi, Eunaticina mienisi (R.N. Kilburn, 1988) - (NATICIDAE)
- mienisi, Gennaeosinum mienisi R.N. Kilburn, 1988 - syn of: Eunaticina mienisi (R.N. Kilburn, 1988) - (NATICIDAE)
- mienisi, Tornus mienisi J.J. Van Aartsen, F. Carrozza & H.P.M.G. Menkhorst, 1998 - (TORNIDAE)
- Mienisiella, syn of: Genus Islamia P. Radoman, 1973 (HYDROBIIDAE)
- mieraensis, Spiralix mieraensis Quiñonero-Salgado, Ruiz-Cobo & Rolán, 2017 - (MOITESSIERIIDAE)
- miersi, Megalobulimus miersi (S.I. Da Costa, 1904) - (MEGALOBULIMIDAE)
- miersi, Simpulopsis miersi L. Pfeiffer, 1856 - (SIMPULOPSIDAE)
- Miersi, syn of: Genus Simpulopsis H.H. Beck, 1837 (SIMPULOPSIDAE)
- miersii, Anthinus miersii (G.B. Sowerby, 1886) - (STROPHOCHEILIDAE)
- Miesea, Genus Miesea E.G.G. Marcus, 1961 (DOTIDAE)
- mietta, Herviella mietta Er. Marcus & J.B. Burch, 1965 - (GLAUCIDAE)
- mieuina, Besla mieuina (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- mifsudi, Mitromorpha mifsudi B. Amati, C. Smriglio & M. Oliverio, 2015 - (MITROMORPHIDAE)
- Mifsudia, Genus Mifsudia P. Mietto, I. Nofroni & E. Quaggiotto, 2014 (CIMIDAE)
- mifunensis, Nipponicorbula mifunensis Ota 1964 † - (CORBULIDAE) (FOSSIL)
- mifunensis, Anthonya mifunensis Tamura, 1977 † - (CRASSATELLIDAE) (FOSSIL)
- mifunensis, Pseudoveletuceta mifunensis Tashiro, 1971 † - (GLYCYMERIDIDAE) (FOSSIL)
- mifunensis, Septifer mifunensis Tamura, 1976 † - (MYTILIDAE) (FOSSIL)
- mifunensis, Periploma mifunensis Tamura, 1977 † - (PERIPLOMATIDAE) (FOSSIL)
- mifunensis, Ptilotrigonia mifunensis Tamura & Tashiro, 1967 † - (PTEROTRIGONIIDAE) (FOSSIL)
- miga, Tritia miga (J.G. Bruguière, 1789 †) - (NASSARIIDAE) (FOSSIL)
- migayi, Frechitoides migayi (Kiparisova, 1958 †) - (BEYRICHITIDAE) (FOSSIL)
- migayi, Arctonautilus migayi E.S. Sobolev, 1989 † - (PROPTYCHITIDAE) (FOSSIL)
- mighelsi, Heliacus mighelsi (R.A. Philippi, 1853) - (ARCHITECTONICIDAE)
- mighelsi, Teretropoma mighelsi (R.A. Philippi, 1853) - syn of: Heliacus mighelsi (R.A. Philippi, 1853) - (ARCHITECTONICIDAE)
- mighelsi, Lienardia mighelsi T. Iredale & J.R. le B. Tomlin, 1917 - (CLATHURELLIDAE)
- mighelsi, Conus mighelsi L.C. Kiener, 1847 - syn of: Harmoniconus musicus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- mighelsi, Clavus mighelsi E.A. Kay, 1979 - syn of: Pyrgocythara mighelsi (E.A. Kay, 1979) - (DRILLIIDAE)
- mighelsi, Stagnicola mighelsi W.G. Binney, 1865 - (LYMNAEIDAE)
- mighelsi, Pyrgocythara mighelsi (E.A. Kay, 1979) - (MANGELIIDAE)
- mighelsi, Margarites mighelsi H.A. Rehder, 1937 - syn of: Margarites vahlii (H.P.C. Møller, 1842) - (MARGARITIDAE)
- mighelsi, Turbonilla mighelsi P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- mighelsi, Alvania mighelsi W. Stimpson, 1851 - (RISSOIDAE)
- mighelsi, Solariella varicosa mighelsi A. Adams, 1860 - (SOLARIELLIDAE)
- mighelsiana, Partulina mighelsiana (L. Pfeiffer, 1847) - (ACHATINELLIDAE)
- mighelsiana, Euhadra mighelsiana (L. Pfeiffer, 1846) - (BRADYBAENIDAE)
- mighelsiana bella, Partulina mighelsiana bella (L.A. Reeve, 1850) - (ACHATINELLIDAE)
- mighelsiana dixoni, Partulina mighelsiana dixoni F. Borcherding, 1906 - (ACHATINELLIDAE)
- mighelsiana hepatica, Partulina mighelsiana hepatica F. Borcherding, 1906 - (ACHATINELLIDAE)
- mighelsiana latizona, Partulina mighelsiana latizona F. Borcherding, 1906 - (ACHATINELLIDAE)
- mighelsiana martensi, Partulina mighelsiana martensi F. Borcherding, 1906 - (ACHATINELLIDAE)
- mighelsiana polita, Partulina mighelsiana polita (W. Newcomb, 1853) - (ACHATINELLIDAE)
- mighelsii, Onoba mighelsii (W. Stimpson, 1851) - (RISSOIDAE)
- migliorinii, Cyclope migliorinii Bevilaqua, 1928 † - (NASSARIIDAE) (FOSSIL)
- migma, Hinemoa migma (C. Hedley, 1909) - (PYRAMIDELLIDAE)
- Migonitis, syn of: Genus Erycina J.B.P.A. Lamarck, 1805 (LASAEIDAE)
- Migranaia, syn of: Genus Potomida W.J. Swainson, 1840 (UNIONIDAE)
- migrans, Trichotropis migrans W.H. Dall, 1881 - (CAPULIDAE)
- migrans, Cardiola migrans Barrande, 1881 † - syn of: Butovicella migrans (Barrande, 1881 †) - (CARDIOLIDAE) (FOSSIL)
- migrans, Melanella migrans T.A. Conrad, 1846 † - (EULIMIDAE) (FOSSIL)
- migrans, Mariafusus migrans (T.A. Conrad, 1843 †) - (FASCIOLARIIDAE) (FOSSIL)
- migrans, Temperoceras migrans (Barrande, 1868 †) - (GEISONOCERATIDAE) (FOSSIL)
- migrans, Pleurorima migrans J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- migrans, Butovicella migrans (Barrande, 1881 †) - (MODIOMORPHIDAE) (FOSSIL)
- migrans erato, Pleurorima migrans erato J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- migrans transcedens, Pleurorima migrans transcedens J. Perner, 1907 † - (GOSSELETINIDAE) (FOSSIL)
- migrata, Cernuella migrata É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- migratoria, Papuina migratoria L. Pfeiffer, 1865 - (CAMAENIDAE)
- migratoria, Strophiops migratoria C.J. Maynard & W.F. Clapp, 1921 - (CERIONIDAE)
- migratoria, Cochlis migratoria A.W.B. Powell, 1927 - syn of: Notocochlis gualteriana (C.A. Récluz, 1844) - (NATICIDAE)
- miguelensis, Acutostrea miguelensis (L.G. Hertlein, 1928 †) - (FLEMINGOSTREIDAE) (FOSSIL)
- miguelensis, Ostrea miguelensis L.G. Hertlein, 1928 † - syn of: Acutostrea miguelensis (L.G. Hertlein, 1928 †) - (OSTREIDAE) (FOSSIL)
- miguelensis, Lyropecten miguelensis R. Arnold, 1906 † - (PECTINIDAE) (FOSSIL)
- miguelensis, Solariorbis miguelensis H.A. Pilsbry & A.A. Olsson, 1952 - (TORNIDAE)
- migueleti, Cerion migueleti M.I. Sánchez Roig, 1951 - (CERIONIDAE)
- miguelfiaderoi, Africonus miguelfiaderoi T. Cossignani & R. Fiadeiro, 2015 - (CONIDAE)
- miguelgomezi, Turbonilla miguelgomezi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- migueli, Hemicycla migueli K. Groh & R. Hutterer, 1996 - syn of: Hemicycla merita (A. Mousson, 1872) - (HELICIDAE)
- migueliana, Glycymeris migueliana W.H. Dall, 1916 - syn of: Glycymeris septentrionalis (A.T. von Middendorff, 1849) - (GLYCYMERIDIDAE)
- miguelinum, Cerion miguelinum A. Gonzalez Guillén, 2008 - (CERIONIDAE)
- miguelinus, Oxychilus miguelinus L. Pfeiffer, 1856 - (OXYCHILIDAE)
- migueloi, Turbonilla migueloi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- mihalcikae, Elimia mihalcikae F.G. Thompson, 1998 - (PLEUROCERIDAE)
- mihanus, Dicoelites mihanus Boehm, 1912 † - (DICOELITIDAE) (FOSSIL)
- miharanoroensis, Bogoslovskya miharanoroensis Niko & T. Ozawa, 1997 † - (BOGOSLOVSKYIDAE) (FOSSIL)
- miharanoroensis, Somoholites miharanoroensis Ehiro & al., 2014 † - (SOMOHOLITIDAE) (FOSSIL)
- mihomehia, Gulella mihomehia K.C. Emberton, 2001 - (STREPTAXIDAE)
- miikensis, Hawaiarca miikensis H. Noda, 1966 - syn of: Mesocibota bistrigata (R.W. Dunker, 1866) - (ARCIDAE)
- mija, Okenia mija R.F. Burn, 1967 - (GONIODORIDIDAE)
- mijana, Zebinella mijana (H.S. Ladd, 1866 †) - (RISSOINIDAE) (FOSSIL)
- mijanona, Parvedentulina mijanona K.C. Emberton, 2002 - (STREPTAXIDAE)
- mikado, Siphonalia mikado J.C. Melvill, 1888 - (BUCCINIDAE)
- mikado, Tyrannophaedusa mikado (H.A. Pilsbry, 1900) - (CLAUSILIIDAE)
- mikado, Cymatoceras mikado Krenkel, 1910 † - (CYMATOCERATIDAE) (FOSSIL)
- mikado, Monetaria caputserpentis mikado F.A. Schilder & M. Schilder, 1938 - (CYPRAEIDAE)
- mikado, Calcarovula mikado (K. Kurohara & T. Habe, 1991) - (OVULIDAE)
- mikado makiyamai, Siphonalia mikado makiyamai F.S. MacNeil, 1960 † - (BUCCINIDAE) (FOSSIL)
- Mikadotrochus, Genus Mikadotrochus W.A. Lindholm, 1927 (PLEUROTOMARIIDAE)
- mikasaensis, Bathyancistrolepis mikasaensis Amano & Oleinik, 2016 † - (BUCCINIDAE) (FOSSIL)
- mikasaensis, Apiotrigonia mikasaensis Tashiro, 1979 † - (MEGATRIGONIIDAE) (FOSSIL)
- mikasaensis, Acharax mikasaensis S. Kiel, K. Amano & B.W. Jenkins, 2008 † - (SOLEMYIDAE) (FOSSIL)
- mikawa, Euhadra scaevola mikawa K. Amano, 1939 - (BRADYBAENIDAE)
- mikawa, Mesophaedusa hickonis mikawa (H.A. Pilsbry, 1905) - (CLAUSILIIDAE)
- mikawaensis, Mammilla mikawaensis M. Azuma, 1961 - (NATICIDAE)
- mikeharti, Cypraeovula mikeharti F.Jr. Lorenz, 1985 - (CYPRAEIDAE)
- mikeleei, Gyroscala mikeleei E.F. Garcia, 2003 - (EPITONIIDAE)
- Mikenoella, syn of: Genus Halolimnohelix J. Germain, 1913 (HALOLIMNOHELICIDAE)
- mikenoensis, Gulella mikenoensis (H.B. Preston, 1913) - (STREPTAXIDAE)
- mikesevernsi, Hemilienardia mikesevernsi Wiedrick, 2017 - (RAPHITOMIDAE)
- mikhaili, Egoianites mikhaili Delanoy & J.J. Bert, 2006 † - (HETEROCERATIDAE) (FOSSIL)
- mikhailovichi, Subradioceras mikhailovichi Smyshlyaeva & Zakharov, 2015 † - (GYRONITIDAE) (FOSSIL)
- mikikoae, Calliostoma mikikoae (S. Kosuge & Oh-Ishi, 1970) - (CALLIOSTOMATIDAE)
- Mikiria, Genus Mikiria H.H. Godwin-Austen, 1918 (CAMAENIDAE)
- mikkelsenae, Coccopigya mikkelsenae J.H. McLean & M.G. Harasewych, 1995 - (COCCULINIDAE)
- mikkelsenae, Homalopoma mikkelsenae Y.F. Huang, C.C. Fu & G.T. Poppe, 2016 - (COLLONIIDAE)
- mikkelsenae, Amerycina mikkelsenae P.H. Valentich-Scott, 2012 - (LASAEIDAE)
- mikkula, Anadara mikkula (J. Gardner, 1926 †) - (ARCIDAE) (FOSSIL)
- mikkulum, Uromitra mikkulum J. Gardner, 1937 † - (COSTELLARIIDAE) (FOSSIL)
- Miklukhoceras, Genus Miklukhoceras Pavlov , 1967 (MEDLICOTTIIDAE) (FOSSIL)
- mikobokense, Anagaudryceras mikobokense M. Collignon, 1956 † - (GAUDRYCERATIDAE) (FOSSIL)
- mikobokense, Neophylloceras mikobokense Shimizu 1934 † - (NEOPHYLLOCERATIDAE) (FOSSIL)
- mikobokense, Epiphylloceras mikobokense M. Collignon, 1956 † - syn of: Neophylloceras surya (E. Forbes, 1846 †) - (PHYLLOCERATIDAE) (FOSSIL)
- mikobokensis, Brahmaites mikobokensis M. Collignon 1971 † - (KOSSMATICERATIDAE) (FOSSIL)
- mikoi, Neritodryas dubia mikoi T. Cossignani, 2016 - (NERITIDAE)
- mikoi, Lyria mikoi (S. Kosuge, 1985) - (VOLUTIDAE)
- mikoi, Microlyria mikoi S. Kosuge, 1985 - syn of: Lyria mikoi (S. Kosuge, 1985) - (VOLUTIDAE)
- mikra, Mitrella mikra Gardner, 1947 † - (COLUMBELLIDAE) (FOSSIL)
- mikraulax, Uskardita mikraulax Ratter & Cope, 1998 † - (FREJIDAE) (FOSSIL)
- Mikro, Genus Mikro A. Warιn, 1996 (SKENEIDAE)
- Mikrogoniochilus, Genus Mikrogoniochilus Willmann, 1981 (HYDROBIIDAE) (FOSSIL)
- mikrokamelos, Splendrillia mikrokamelos R.N. Kilburn, 1988 - (DRILLIIDAE)
- Mikrola, syn of: Genus Spheniopsis C.L.F. von Sandberger, 1863 (SPHENIOPSIDAE)
- mikrolobus, Galbanites mikrolobus Buckman † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- mikros, Pseudechotrida mikros J. Stanisic, 2010 - (RHYTIDIDAE)
- mikrostenos, Favartia mikrostenos R. Houart, S. Gori & J. Rosado, 2017 - (MURICIDAE)
- mikulici, Trochonemella mikulici Rohr, 1980 † - (TROCHONEMATIDAE) (FOSSIL)
- mikuriyensis, Aegista proba mikuriyensis H.A. Pilsbry, 1902 - (BRADYBAENIDAE)
- mikuskai, Vitrea mikuskai I. Pintér, 1977 - (PRISTILOMATIDAE)
- mikuzi, Sepia mikuzi Košt'ák & al., 2016 † - (SEPIIDAE) (FOSSIL)
- Mila, Genus Mila Barrande, 1881 (STOLIDOTIDAE) (FOSSIL)
- milachevitchi, Paraelona milachevitchi V.I. Beriozkina & Y.I. Starobogatov, 1995 - (BITHYNIIDAE)
- milachevitchi, Euxinipyrgula milachevitchi (A.N. Golikov & Y.I. Starobogatov, 1966) - (HYDROBIIDAE)
- milachevitchi, Theodoxus milachevitchi A.N. Golikov & Y.I. Starobogatov, 1966 - (NERITIDAE)
- milachewichi, Abra nitida milachewichi Nevesskaja, 1963 - (SEMELIDAE)
- MILACIDAE Ellis, 1926 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-PARMACELLOIDEA [Superfamily])
- miladinovorum, Ohrigocea miladinovorum S. Hadžišce, 1959 - (HYDROBIIDAE)
- milae, Caspia milae H.D. Boeters, P. Glöer & D.G. Georgiev, 2015 - (HYDROBIIDAE)
- milagrosae, Ramsdenia notata milagrosae C.G. Aguayo, 1943 - (POMATIIDAE)
- milamensis, Nuculana milamensis (G.F. Harris, 1895 †) - (NUCULANIDAE) (FOSSIL)
- milamensis, Leda milamensis G.F. Harris, 1895 † - syn of: Nuculana milamensis (G.F. Harris, 1895 †) - (NUCULANIDAE) (FOSSIL)
- milamensis, Eurytellina milamensis Garvie, 1996 † - (TELLINIDAE) (FOSSIL)
- milaschevichi, Abra milaschevichi Nevesskaja, 1963 - syn of: Abra prismatica (G. Montagu, 1808) - (SEMELIDAE)
- milaschevichi, Anodonta milaschevichi V.V. Bogatov, Y.I. Starobogatov & L.A. Prozorova, 2005 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- milaschevici, Rondiceras milaschevici (Nikitin, 1881 †) - (CARDIOCERATIDAE) (FOSSIL)
- milaschevici khudyaevi, Rondiceras milaschevici khudyaevi Kiselev, 2006 † - (CARDIOCERATIDAE) (FOSSIL)
- milaschevitchi, Anodonta milaschevitchi V.V. Bogatov, Y.I. Starobogatov & L.A. Prozorova, 2005 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- milaschevitschi, Parabaicalia milaschevitschi (W.A. Lindholm, 1909) - (AMNICOLIDAE)
- milaschevitschi, Pupilla milaschevitschi W.A. Lindholm, 1911 - syn of: Pupilla muscorum (C. Linnaeus, 1758) - (PUPILLIDAE)
- milaschevitschi vulcanica, Xerosecta milaschevitschi vulcanica Puzanov, 1927 - syn of: Helicopsis filimargo I. Krynicki, 1833 - (HYGROMIIDAE)
- milaschewitchi, Tricolia milaschewitchi V.V. Anistratenko & Y.I. Starobogatov, 1991 - (PHASIANELLIDAE)
- milaschewitchii, Pontohedyle milaschewitchii (A. Kowalevsky, 1901) - (PARHEDYLIDAE)
- milaschewitchii, Microhedyle milaschewitchii A. Kowalevsky, 1901 - syn of: Pontohedyle milaschewitchii (A. Kowalevsky, 1901) - (PARHEDYLIDAE)
- milaskeviczi, Abra milaskeviczi Nevesskaja, 1916 - syn of: Abra prismatica (G. Montagu, 1808) - (SEMELIDAE)
- milatschevitchi, Hedylopsis milatschevitchi A. Kowalevsky, 1901 - syn of: Pontohedyle milaschewitchii (A. Kowalevsky, 1901) - (HEDYLOPSIDAE)
- Milax, Genus Milax J.E. Gray, 1855 (MILACIDAE)
- milcorama, Littorina milcorama R.A. Philippi, 1838 - (LITTORINIDAE)
- milda, Rochefortia milda P. Bartsch, 1915 - syn of: Neolepton atlanticum (E.A. Smith, 1890) - (LASAEIDAE)
- Milda, Subgenus Pyramidella (Milda) W.H. Dall & P. Bartsch, 1904 (PYRAMIDELLIDAE)
- milda, Triphora milda P. Bartsch, 1915 - (TRIPHORIDAE)
- mildredae, Murexsul mildredae (L.H. Poorman, 1980) - (MURICIDAE)
- mildredae, Caribachlamys mildredae (Bayer, 1941) - (PECTINIDAE)
- milelinae, Pristiterebra milelinae (U. Aubry, 1999) - (TEREBRIDAE)
- milely, Terebra pertusa milely L. Bozzetti, 2001 - (TEREBRIDAE)
- milerai, Zeidora milerai J. Espinosa, J.A. Ortea & R. Fernández-Garcés, 2005 - (FISSURELLIDAE)
- milerai, Annularita majuscula milerai M.L. Jaume, 1984 - (POMATIIDAE)
- miles, Squamopleura miles (P.P. Carpenter in H.A. Pilsbry, 1893) - (CHITONIDAE)
- miles, Sclerochiton miles P.P. Carpenter in H.A. Pilsbry, 1893 - syn of: Squamopleura miles (P.P. Carpenter in H.A. Pilsbry, 1893) - (CHITONIDAE)
- miles, Stigmatica stigmatica miles (H.C. Küster, 1860) - (CLAUSILIIDAE)
- miles, Rhizoconus miles (C. Linnaeus, 1758) - (CONIDAE)
- miles, Eteoderoceras miles (C.T. Simpson, 1855 †) - (EODEROCERATIDAE) (FOSSIL)
- miles, Tegoceras miles T.L. Casey, 1978 † - syn of: Tegoceras mosense (A.V.M.D. D'Orbigny, 1841 †) - (LYELLICERATIDAE) (FOSSIL)
- miles, Zebra miles H. Strebel, 1909 - syn of: Orthalicus ponderosus H. Strebel, 1882 - (ORTHALICIDAE)
- miles, Flexopecten miles (L.A. Reeve, 1853) - (PECTINIDAE)
- miles, Pseudomelania miles E.A.L. Kittl, 1894 † - (PSEUDOMELANIIDAE) (FOSSIL)
- milesi, Turriconus milesi (E.A. Smith, 1887) - (CONIDAE)
- milesi, Turriconus milesi E.A. Smith, 1887 - syn of: Turriconus milesi (E.A. Smith, 1887) - (CONIDAE)
- milesi, Ashmunella milesi D.M. Reeder, 1993 - (POLYGYRIDAE)
- milesi, Campeloma milesi H.C. Lea, 1863 - (VIVIPARIDAE)
- Milesiana, Genus Milesiana B. Arconada & M.A. Ramos, 2006 (HYDROBIIDAE)
- milessii, Theodoxus milessii Papp, 1979 † - (NERITIDAE) (FOSSIL)
- milessii, Fossarulus milessii Papp, 1979 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- mileti, Helix mileti W. Kobelt, 1906 - (HELICIDAE)
- milettiana, Medora italiana milettiana F.L. Giusti, 1967 - (CLAUSILIIDAE)
- milettiana, Helix milettiana M. Paulucci, 1881 - syn of: Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- milevianus, Coniconapaeus milevianus (W.J. Raymond, 1853) - (ENIDAE)
- milia, Eucithara milia (R.A. Philippi, 1851) - (MANGELIIDAE)
- miliacea, Volvaria miliacea J.B.P.A. Lamarck, 1822 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (ACTEONIDAE)
- miliacea, Arca miliacea A.E.M. Cossmann, 1887 † - (ARCIDAE) (FOSSIL)
- miliacea, Gibberula miliacea J.B.P.A. Lamarck, 1822 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (CYSTISCIDAE)
- miliacea, Gibberula miliacea L.C. Kiener, 1834 - syn of: Gibberula oryza (J.B.P.A. Lamarck, 1822) - (CYSTISCIDAE)
- miliacea, Kellia miliacea A. Issel, 1869 - syn of: Alveinus miliaceus (A. Issel, 1869) - (KELLIIDAE)
- miliacea, Marginella miliacea J.B.P.A. Lamarck, 1822 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (MARGINELLIDAE)
- miliacea, Ledella miliacea (C. Hedley, 1902) - (NUCULANIDAE)
- miliacea, Olivella miliacea (F.P. Marrat, 1871) - (OLIVELLIDAE)
- miliacea, Gangetia miliacea (G. Nevill, 1880) - (STENOTHYRIDAE)
- miliacea, Teredo miliacea É. Lamy, 1923 - (TEREDINIDAE)
- miliaceus, Alveinus miliaceus (A. Issel, 1869) - (KELLIELLIDAE)
- miliaria, Gibberula miliaria (C. Linnaeus, 1758) - (CYSTISCIDAE)
- miliaria, Marginella miliaria C. Linnaeus, 1758 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (MARGINELLIDAE)
- miliaria, Microstagon miliaria (J.B.P.A. Lamarck, 1806 †) - (UNGULINIDAE) (FOSSIL)
- miliaria, Voluta miliaria C. Linnaeus, 1758 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (VOLUTIDAE)
- miliaria majuscula, Marginella miliaria majuscula M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1883 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (MARGINELLIDAE)
- Miliariconus, Genus Miliariconus J.K. Tucker & M.J. Tenorio, 2009 (CONIDAE)
- miliaris, Drymaeus miliaris R.A. Philippi, 1867 - (BULIMULIDAE)
- miliaris, Calliostoma miliaris G.B. Brocchi, 1814 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (CALLIOSTOMATIDAE)
- miliaris, Miliariconus miliaris (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- miliaris, Erosaria miliaris (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- miliaris, Cypraea miliaris J.F. Gmelin, 1791 - syn of: Erosaria miliaris (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- miliaris, Pectunculus miliaris R.A. Philippi, 1845 - syn of: Lissarca miliaris (R.A. Philippi, 1845) - (GLYCYMERIDIDAE)
- miliaris, Kelliella miliaris (R.A. Philippi, 1844) - (KELLIELLIDAE)
- miliaris, Lasaea miliaris R.A. Philippi, 1845 - (LASAEIDAE)
- miliaris, Echinolittorina miliaris (J.R.C. Quoy & J.P. Gaimard, 1833) - (LITTORINIDAE)
- miliaris, Tectarius miliaris J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Echinolittorina miliaris (J.R.C. Quoy & J.P. Gaimard, 1833) - (LITTORINIDAE)
- miliaris, Littorina miliaris J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Echinolittorina miliaris (J.R.C. Quoy & J.P. Gaimard, 1833) - (LITTORINIDAE)
- miliaris, Marginella miliaris C. Linnaeus, 1758 - syn of: Gibberula miliaria (C. Linnaeus, 1758) - (MARGINELLIDAE)
- miliaris, Vitularia miliaris (J.F. Gmelin, 1791) - (MURICIDAE)
- miliaris, Nucinella miliaris (G.P. Deshayes, 1829 †) - (NUCINELLIDAE) (FOSSIL)
- miliaris, Nucula miliaris S.V. Wood, 1840 - syn of: Nucinella ovalis (S.V. Wood, 1840 †) - (NUCULIDAE)
- miliaris, Scutellastra miliaris (R.A. Philippi, 1848) - (PATELLIDAE)
- miliaris, Patella miliaris W.H. Turton, 1932 - syn of: Scutellastra granularis (C. Linnaeus, 1758) - (PATELLIDAE)
- miliaris, Lissarca miliaris (R.A. Philippi, 1845) - (PHILOBRYIDAE)
- miliaris, Pinctada miliaris G. Seguenza, 1876 - syn of: Lissotesta turrita (A. Gaglini, 1987) - (PTERIIDAE)
- miliaris, Lissotesta miliaris G. Seguenza, 1876 - syn of: Lissotesta turrita (A. Gaglini, 1987) - (SEGUENZIOIDEA (unassigned))
- miliaris, Clelandella miliaris (G.B. Brocchi, 1814) - (TROCHIDAE)
- miliaris, Mariella miliaris (Pictet & Campiche, 1861 †) - (TURRILITIDAE) (FOSSIL)
- miliaris, Venus miliaris R.A. Philippi, 1844 - syn of: Kelliella miliaris (R.A. Philippi, 1844) - (VENERIDAE)
- miliaris fijiensis, Echinolittorina miliaris fijiensis G. Nevill, 1885 - syn of: Echinolittorina feejeensis (L.A. Reeve, 1857) - (LITTORINIDAE)
- miliaris fijiensis, Littorina miliaris fijiensis G. Nevill, 1885 - syn of: Echinolittorina feejeensis (L.A. Reeve, 1857) - (LITTORINIDAE)
- miliaris granulatus, Conus miliaris granulatus G.B. I Sowerby, 1834 - syn of: Miliariconus miliaris (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- miliaris magistra, Cypraea miliaris magistra J.C. Melvill, 1888 - syn of: Erosaria miliaris (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- miliaris minor, Conus miliaris minor M. Couturier, 1907 - syn of: Miliariconus miliaris (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- miliaris pascuensis, Miliariconus miliaris pascuensis (H.A. Rehder, 1980) - (CONIDAE)
- milicentana, Purpura milicentana Loel & Corey, 1932 † - (MURICIDAE) (FOSSIL)
- milicevici, Goniochilus milicevici (P.S. Pavlovic, 1927 †) - (HYDROBIIDAE) (FOSSIL)
- milicha, Pyrgulina milicha J.C. Melvill, 1910 - (PYRAMIDELLIDAE)
- Milicheilea, Genus Milicheilea J. Espinosa & J.A. Ortea, 2011 (HIPPONICIDAE)
- milierensis, Schroederilda milierensis (Zardini, 1978 †) - (MATHILDIDAE) (FOSSIL)
- milierensis, Pseudotritonium milierensis Zardini, 1978 † - syn of: Schroederilda milierensis (Zardini, 1978 †) - (PSEUDOTRITONIIDAE) (FOSSIL)
- milievskyi, Kolymia milievskyi Biakov, 2012 † - (KOLYMIIDAE) (FOSSIL)
- miliola, Cyclodontina janeirensis miliola D'Orbigny, 1846 - (ODONTOSTOMIDAE)
- miliola, Olivella miliola (A.V.M.D. D'Orbigny, 1842) - (OLIVELLIDAE)
- miliola, Oliva miliola P.L. Duclos in J.C. Chenu, 1845 - syn of: Olivella miliola (A.V.M.D. D'Orbigny, 1842) - (OLIVIDAE)
- miliolus, Bahiensis miliolus D'Orbigny, 1835 - syn of: Bahiensis fuscagula (A.V.M.D. D'Orbigny, 1835) - (ODONTOSTOMIDAE)
- militare, Chaetoderma militare E. Selenka, 1885 - (CHAETODERMATIDAE)
- militare, Vexillum militare (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- militare, Discopsis militare (F.P. Jousseaume, 1872) - (TORNIDAE)
- militaris, Aeolidia militaris J. Alder & A. Hancock, 1864 - syn of: Phidiana militaris (J. Alder & A. Hancock, 1864) - (AEOLIDIIDAE)
- militaris, Calliostoma militaris H.F.A. von Ihering, 1907 - (CALLIOSTOMATIDAE)
- militaris, Clavatula militaris R.B. Hinds, 1843 - (CLAVATULIDAE)
- militaris, Trypanostylus militaris E.A.L. Kittl, 1894 † - (COELOSTYLINIDAE) (FOSSIL)
- militaris, Lithoconus militaris J. de C. Sowerby, 1840 † - syn of: Lithoconus brevis (J. de C. Sowerby, 1840 †) - (CONIDAE) (FOSSIL)
- militaris, Vexillum militaris L.A. Reeve, 1845 - syn of: Vexillum militare (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- militaris, Phanerotinus militaris (Whidborne, 1892 †) - (EUOMPHALIDAE) (FOSSIL)
- militaris, Serpulospira militaris Whidborne, 1892 † - syn of: Phanerotinus militaris (Whidborne, 1892 †) - (EUOMPHALOIDEA (unassigned)) (FOSSIL)
- militaris, Phidiana militaris (J. Alder & A. Hancock, 1864) - (FACELINIDAE)
- militaris, Helix militaris L. Pfeiffer, 1855 - syn of: Stylodonta unidentata (H.S. Holten, 1802) - (HELICIDAE)
- militaris, Pyrgulopsis militaris R. Hershler, 1998 - (HYDROBIIDAE)
- militaris, Theodoxus militaris (M. von Neumayr, 1869 †) - (NERITIDAE) (FOSSIL)
- militaris, Patella militaris C. Linnaeus, 1771 - syn of: Capulus ungaricus (C. Linnaeus, 1758) - (PATELLIDAE)
- militaris, Hindsiclava militaris (R.B. Hinds, in L.A. Reeve, 1843) - (PSEUDOMELATOMIDAE)
- militaris, Turbo militaris L.A. Reeve, 1848 † - syn of: Dinassivica imperialis J.F. Gmelin, 1791 † - (TURBINIDAE) (FOSSIL)
- militaris decostatus, Theodoxus militaris decostatus (Š. Brusina, 1897 †) - (NERITIDAE) (FOSSIL)
- militaris jurisicpolsakae, Theodoxus militaris jurisicpolsakae T.A. Neubauer, M. Harzhauser, A. Kroh, E. Georgopoulou & O. Mandic, - (NERITIDAE) (FOSSIL)
- militaris quequensis, Calliostoma militaris quequensis A. Carcelles, 1944 - (CALLIOSTOMATIDAE)
- militarium, Stearoceras militarium A. Hyatt, 1893 † - (GRYPOCERATIDAE) (FOSSIL)
- militis, Carinigera buresi militis (H. Nordsieck, 1977) - (CLAUSILIIDAE)
- milium, Anachis milium (W.H. Dall, 1916) - (COLUMBELLIDAE)
- milium, Thala milium (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- milium, Striatura milium (E.S. Morse, 1859) - (GASTRODONTIDAE)
- milium, Mitra milium L.A. Reeve, 1845 - syn of: Thala milium (L.A. Reeve, 1845) - (MITRIDAE)
- milium, Lucidestea milium (K.H.J. Thiele, 1925) - (RISSOIDAE)
- milium, Parviturbo milium (W.H. Dall, 1892 †) - (SKENEIDAE) (FOSSIL)
- milium, Pisidium milium F. Held, 1836 - (SPHAERIIDAE)
- milium, Angustula milium (A.A. Gould, 1840) - (VERTIGINIDAE)
- milium pseudosphaerium, Pisidium milium pseudosphaerium J. Favre, 1927 - syn of: Pisidium pseudosphaerium J. Favre, 1927 - (SPHAERIIDAE)
- miljkovici, Theodoxus miljkovici (Š. Brusina, 1902 †) - (NERITIDAE) (FOSSIL)
- millaini, Huncalotis millaini Damborenea & H.A. Leanza, 2016 † - (PECTINIDA (UNASSIGNED)) (FOSSIL)
- millardense, Meekoceras millardense Brayard & al., 2013 † - (MEEKOCERATIDAE) (FOSSIL)
- millardensis, Glaphyrites millardensis Titus, 2000 † - (GLAPHYRITIDAE) (FOSSIL)
- millardi, Borsonia millardi (M. Rouault, 1849 †) - (BORSONIIDAE) (FOSSIL)
- millardi, Mitrella millardi Lussi, 2017 - (COLUMBELLIDAE)
- millardi, Streptochetus millardi (M. Rouault, 1849 †) - (FASCIOLARIIDAE) (FOSSIL)
- millardi, Marginella millardi M. Lussi, 1993 - (MARGINELLIDAE)
- millardi, Ilanga millardi D.G. Herbert, 1987 - (SOLARIELLIDAE)
- millardi, Triviella millardi (C.N. Cate, 1979) - (TRIVIIDAE)
- millardi, Trivia millardi C.N. Cate, 1979 - syn of: Triviella millardi (C.N. Cate, 1979) - (TRIVIIDAE)
- millarensis, Iberus campesinus millarensis (W. Kobelt, 1909) - (HELICIDAE)
- millasiense, Laevicardium subturgidum millasiense C.F. Fontannes, 1881 - (CARDIIDAE)
- millbayana, Doto millbayana H.M. Lemche, 1976 - (DOTIDAE)
- milleacantha, Abbottella milleacantha G.T. Watters & G. Duffy, 2010. - (POMATIIDAE)
- milleconvolutum, Dentalium milleconvolutum Unknown - (DENTALIIDAE)
- millecostata, Scalaria millecostata W.H. Pease, 1861 - syn of: Epitonium multicostatum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- millecostata, Rissoina millecostata A. Garrett, 1873 - (RISSOINIDAE)
- millecostatum, Pusia millecostatum (W.J. Broderip, 1836) - (COSTELLARIIDAE)
- millecostatum, Epitonium millecostatum (W.H. Pease, 1861) - (EPITONIIDAE)
- millecostatus, Radiodiscus millecostatus H.A. Pilsbry & J.H. Ferriss, 1906 - (HELICODISCIDAE)
- millecra, Leminda millecra R.J. Griffiths, 1985 - (CHARCOTIIDAE)
- milleformis, Pleuromya milleformis J. Marwick, 1953 † - (PLEUROMYIDAE) (FOSSIL)
- millegemmata, Euciroa millegemmata J.T. Kuroda & T. Habe in J.T. Kuroda, 1952 - (EUCIROIDAE)
- millegrana, Centrocardita millegrana (S. Nomura & N. Zinbo, 1934) - (CARDITIDAE)
- millegrana, Venericardia millegrana S. Nomura & N. Zinbo, 1934 - syn of: Centrocardita millegrana (S. Nomura & N. Zinbo, 1934) - (CARDITIDAE)
- millegrana, Discodoris millegrana J. Alder & A. Hancock, 1854 - syn of: Aporodoris millegrana (J. Alder & A. Hancock, 1854) - (DISCODORIDIDAE)
- millegrana, Taringa millegrana J. Alder & A. Hancock, 1854 - syn of: Aporodoris millegrana (J. Alder & A. Hancock, 1854) - (DISCODORIDIDAE)
- millegrana, Aporodoris millegrana (J. Alder & A. Hancock, 1854) - (DORIDIDAE)
- millegrana, Doris millegrana J. Alder & A. Hancock, 1854 - syn of: Aporodoris millegrana (J. Alder & A. Hancock, 1854) - (DORIDIDAE)
- millegrana, Leiostyla millegrana R.T. Lowe, 1852 - (LAURIIDAE)
- millegrana, Echinolittorina millegrana (R.A. Philippi, 1848) - (LITTORINIDAE)
- millegrana, Daphnella millegrana A. Garrett, 1873 - (RAPHITOMIDAE)
- millegrana, Clelandella millegrana R.A. Philippi, 1836 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (TROCHIDAE)
- millegrana, Bolma millegrana J.T. Kuroda & T. Habe in T. Habe, 1958 - syn of: Bolma millegranosa (J.T. Kuroda & T. Habe in T. Habe, 1958) - (TURBINIDAE)
- millegranosa, Bolma millegranosa (J.T. Kuroda & T. Habe in T. Habe, 1958) - (TURBINIDAE)
- millegranum, Solariaxis millegranum (J.B.P.A. Lamarck, 1822 †) - (ARCHITECTONICIDAE) (FOSSIL)
- millegranum, Benoistia millegranum (A.E.M. Cossmann, 1898 †) - (BRACHYTREMATIDAE) (FOSSIL)
- millegranum, Trachyspira millegranum C. Gemmellaro, 1889 † - (TRACHYSPIRIDAE) (FOSSIL)
- millegranum subcanaliculatum, Solariaxis millegranum subcanaliculatum (A.V.M.D. D'Orbigny, 1852 †) - (ARCHITECTONICIDAE) (FOSSIL)
- millegranus, Neopetraeus millegranus E.C. Von Martens, 1885 - (BULIMULIDAE)
- millegranus, Calliostoma millegranus R.A. Philippi, 1836 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (CALLIOSTOMATIDAE)
- millegranus pyramidata, Trochus millegranus pyramidata J.G. Jeffreys, 1865 - syn of: Clelandella miliaris (G.B. Brocchi, 1814) - (TROCHIDAE)
- millelineata, Chlorodiloma millelineata (C. Bonnet, 1864) - (TROCHIDAE)
- millenae, Loy millenae (A.V. Martynov, 1994) - (CORAMBIDAE)
- millenae, Cuthona millenae A. Hermosillo & Á. Valdés, 2007 - (FIONIDAE)
- millenaria, Pyrgulopsis millenaria R. Hershler, 1998 - (HYDROBIIDAE)
- milleneri, Kokopapa milleneri F.M. Climo & Mahlfeld, 2011 - (PUNCTIDAE)
- millepalmarum, Eremarionta millepalmarum S.S. Berry, 1930 - (HELMINTHOGLYPTIDAE)
- millepeda, Lambis millepeda (C. Linnaeus, 1758) - (STROMBIDAE)
- Millepes, syn of: Genus Lambis P.F. Rφding, 1798 (STROMBIDAE)
- millepora, Mitra millepora J.B.P.A. Lamarck, 1811 - syn of: Mitra imperialis P.F. Röding, 1798 - (MITRIDAE)
- millepunctata, Eburna millepunctata W.H. Turton, 1932 - syn of: Zemiropsis papillaris (G.B. I Sowerby, 1825) - (ANCILLARIIDAE)
- millepunctata, Bulla millepunctata É.A.A. Locard, 1897 - syn of: Scaphander nobilis A.E. Verrill, 1884 - (BULLIDAE)
- millepunctata, Damochlora millepunctata (E.A. Smith, 1894) - (CAMAENIDAE)
- millepunctata, Mitrella millepunctata (P.P. Carpenter, 1864) - (COLUMBELLIDAE)
- millepunctata, Helix millepunctata E.A. Smith, 1894 - syn of: Damochlora millepunctata (E.A. Smith, 1894) - (HELICIDAE)
- millepunctata, Helix millepunctata O. Böttger, 1889 - syn of: Xeropicta candaharica (L. Pfeiffer, 1846) - (HELICIDAE)
- millepunctata, Anatina millepunctata E.F. de Vogel, 1895 † - (MACTRIDAE) (FOSSIL)
- millepunctata, Mitra millepunctata G.B. Sowerby, 1889 - syn of: Domiporta carnicolor (L.A. Reeve, 1844) - (MITRIDAE)
- millepunctata, Mitra millepunctata M.M. Schepman, 1913 - syn of: Ziba rehderi (J.H. Webb, 1958) - (MITRIDAE)
- millepunctata, Natica millepunctata J.B.P.A. Lamarck, 1822 - syn of: Naticarius stercusmuscarum (J.F. Gmelin, 1791) - (NATICIDAE)
- millepunctata, Olivella millepunctata (P.L. Duclos, 1840) - (OLIVELLIDAE)
- millepunctata, Olivancillaria millepunctata P.L. Duclos, 1840 - syn of: Olivella millepunctata (P.L. Duclos, 1840) - (OLIVIDAE)
- millepunctata, Doryssa millepunctata (G.W. Tryon, 1865) - (PACHYCHILIDAE)
- millepunctata, Scaphander millepunctata É.A.A. Locard, 1897 - (SCAPHANDRIDAE)
- millepunctata, Skenea millepunctata H.B.S. Friele, 1880 - (SKENEIDAE)
- millepunctata, Teinostoma millepunctata G.W. Nowell-Usticke, 1969 - syn of: Teinostoma ciskae M.J. Faber, 1995 - (TORNIDAE)
- millepunctata, Mastonia millepunctata (S. Kosuge, 1962) - (TRIPHORIDAE)
- millepunctata, Xenuroturris millepunctata (Sowerby, 1909) - (TURRIDAE)
- millepunctata, Pleurotoma millepunctata G.B. III Sowerby, 1909 - syn of: Xenuroturris millepunctata (Sowerby, 1909) - (TURRIDAE)
- millepunctata, Lophiotoma millepunctata G.B. III Sowerby, 1908 - syn of: Xenuroturris millepunctata (Sowerby, 1909) - (TURRIDAE)
- millepunctata, Turritella millepunctata S. Nomura, 1935 † - (TURRITELLIDAE) (FOSSIL)
- millepunctata cassiniensis, Damochlora millepunctata cassiniensis E.A. Smith, 1894 - syn of: Nannochlora cassiniensis (E.A. Smith, 1894) - (CAMAENIDAE)
- millepunctata cassiniensis, Helix millepunctata cassiniensis E.A. Smith, 1894 - syn of: Nannochlora cassiniensis (E.A. Smith, 1894) - (HELICIDAE)
- millepunctata pardalis, Natica millepunctata pardalis Coppi, 1876 † - syn of: Cochlis epiglopardalis (F. Sacco, 1890 †) - (NATICIDAE) (FOSSIL)
- millepunctatum, Cerithium millepunctatum J.B. Hombron & C.H. Jacquinot, 1852 - syn of: Cerithium zonatum (W. Wood, 1828) - (CERITHIIDAE)
- millepunctatus, Cucullus millepunctatus P.F. Röding, 1798 - syn of: Conasprella puncticulata (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- millepunctatus, Conus millepunctatus J.B.P.A. Lamarck, 1822 - syn of: Lithoconus leopardus (P.F. Röding, 1798) - (CONIDAE)
- millepunctatus, Theodoxus millepunctatus (Š. Brusina, 1902 †) - (NERITIDAE) (FOSSIL)
- millepunctatus, Solariorbis millepunctatus (H.A. Pilsbry & A.A. Olsson, 1945) - (TORNIDAE)
- millerae, Victodrobia millerae W.F. Ponder & K.B. Clark, 1993 - (HYDROBIIDAE)
- millerae, Megalomphalus millerae (G.W. Nowell-Usticke, 1959) - (VANIKORIDAE)
- Millerelix, Genus Millerelix W.L. Pratt, 1981 (POLYGYRIDAE)
- Millerella, syn of: Subgenus Holospira (Millerspira) L.H. Gilbertson & E. Naranjo-Garcia, 2004 (UROCOPTIDAE)
- milleri, Maxacteon milleri W.B. Rudman, 1971 - (ACTEONIDAE)
- milleri, Ameranna milleri (G.W. Nowell-Usticke, 1959) - (BUCCINIDAE)
- milleri, Bailya milleri G.W. Nowell-Usticke, 1959 - syn of: Ameranna milleri (G.W. Nowell-Usticke, 1959) - (BUCCINIDAE)
- milleri, Anna milleri G.W. Nowell-Usticke, 1959 - syn of: Ameranna milleri (G.W. Nowell-Usticke, 1959) - (BUCCINIDAE)
- milleri, Naesiotus milleri (L. Hoffman, 1987) - (BULIMULIDAE)
- milleri, Trigonostoma milleri J.Q. Burch, 1949 - (CANCELLARIIDAE)
- milleri, Cerion milleri (L. Pfeiffer, 1867) - (CERIONIDAE)
- milleri, Albinaria caerulea milleri (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- milleri, Cochlicopa milleri Wenz, 1919 † - (COCHLICOPIDAE) (FOSSIL)
- milleri, Cochliopina milleri D.W. Taylor, 1966 - (COCHLIOPIDAE)
- milleri, Cycloconcha milleri (F.B. Meek, 1871 †) - (CYCLOCONCHIDAE) (FOSSIL)
- milleri, Cyrtogomphoceras milleri (Roy, 1941 †) - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- milleri, Diestoceras milleri Roy, 1941 † - syn of: Cyrtogomphoceras milleri (Roy, 1941 †) - (DIESTOCERATIDAE) (FOSSIL)
- milleri, Phidiana milleri W.B. Rudman, 1980 - (FACELINIDAE)
- milleri, Lucapinella milleri S.S. Berry, 1959 - (FISSURELLIDAE)
- milleri, Eumorphoceras milleri W.J. Gordon, 1964 † - (GIRTYOCERATIDAE) (FOSSIL)
- milleri, Neogoniatites milleri Ruzhentsev & Bogoslovskaya, 1970 † - (GONIATITIDAE) (FOSSIL)
- milleri, Sonorella milleri C.C. Christensen & D.M. Reeder, 1981 - (HELMINTHOGLYPTIDAE)
- milleri, Cimomia milleri O.S. Adegoke, 1977 † - (HERCOGLOSSIDAE) (FOSSIL)
- milleri, Pyrgulopsis milleri R. Hershler & H.P. Liu, 2010 - (HYDROBIIDAE)
- milleri, Lauria milleri W.L.H. Dohrn, 1869 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (LAURIIDAE)
- milleri, Liroceras milleri Nevell, † - (LIROCERATIDAE) (FOSSIL)
- milleri, Peripetoceras milleri Niko & Mapes, 2015 † - (LIROCERATIDAE) (FOSSIL)
- milleri, Lophospira milleri (Miller, 1877 †) - (LOPHOSPIRIDAE) (FOSSIL)
- milleri, Lymnaea turrita milleri Jooss, 1913 † - (LYMNAEIDAE) (FOSSIL)
- milleri, Eukteanochiton milleri Vendrasco & Runnegar, 2004 † - (MATTHEVIIDAE) (FOSSIL)
- milleri, Medlicottia milleri Plummer & P.H. Scott, 1937 † - (MEDLICOTTIIDAE) (FOSSIL)
- milleri, Murchisonia milleri Miller, 1877 † - syn of: Lophospira milleri (Miller, 1877 †) - (MURCHISONIIDAE) (FOSSIL)
- milleri, Paracymatoceras milleri G. Humphrey, 1949 † - (NAUTILIDAE) (FOSSIL)
- milleri, Palaeoglandina milleri (Pilsbry, 1909) † - (OLEACINIDAE) (FOSSIL)
- milleri, Partula milleri G.A. Solem, 1959 - (PARTULIDAE)
- milleri, Passaloteuthis milleri B. Phillips, 1867 † - (PASSALOTEUTHIDIDAE) (FOSSIL)
- milleri, Metaperrinites milleri (Toumanskaya, 1949 †) - (PERRINITIDAE) (FOSSIL)
- milleri, Ancylus milleri W.L.H. Dohrn, 1869 - (PLANORBIDAE)
- milleri, Spinyplatyceras milleri (Nettelroth, 1889 †) - (PLATYCERATIDAE) (FOSSIL)
- milleri, Nembrotha milleri T.M. Gosliner & D.W. Behrens, 1997 - (POLYCERIDAE)
- milleri, Weinlandipoma milleri P. Bartsch, 1946 - (POMATIIDAE)
- milleri, Neopronorites milleri Ruzhentsev, 1938 † - (PRONORITIDAE) (FOSSIL)
- milleri, Proserpina milleri (Fulton, 1915) † - (PROSERPINIDAE) (FOSSIL)
- milleri, Onoba milleri (L. de Folin, 1871) - (RISSOIDAE)
- milleri, Rissoina milleri J. Lycett, 1863 † - (RISSOINIDAE) (FOSSIL)
- milleri, Paralegoceras milleri Flower & Caster, 1935 † - (SCHISTOCERATIDAE) (FOSSIL)
- milleri, Sinezona milleri D.L. Geiger & T. Sasaki, 2009 - (SCISSURELLIDAE)
- milleri, Lilloettia milleri Imlay, 1953 † - (SPHAEROCERATIDAE) (FOSSIL)
- milleri, Maeneceras milleri Flower & Caster, 1935 † - (SPORADOCERATIDAE) (FOSSIL)
- milleri, Speironepion milleri (G.B. Sowerby, 1838) - (STROPHOCHEILIDAE)
- milleri, Grypoceras milleri Kummel, 1953 † - (TAINOCERATIDAE) (FOSSIL)
- milleri, Moreauoceras milleri Cullison † - (TARPHYCERATIDAE) (FOSSIL)
- milleri, Technophorus milleri Pojeta & Runnegar, 1976 † - (TECHNOPHORIDAE) (FOSSIL)
- milleri, Teredo milleri W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Lyrodus affinis (G.P. Deshayes, 1863) - (TEREDINIDAE)
- milleri, Prehoffmannia milleri Plummer & P.H. Scott, 1937 † - (THALASSOCERATIDAE) (FOSSIL)
- milleri, Tropicolpus milleri J. Marwick, 1931 † - (TURRITELLIDAE) (FOSSIL)
- milleri, Millerspira milleri (L.H. Gilbertson, 1989) - (UROCOPTIDAE)
- milleri, Calliconites milleri Doyle, 1994 † - (XIPHOTEUTHIDIDAE) (FOSSIL)
- milleriana, Alvinia milleriana L.G. Hertlein & A.M. Strong, 1951 - syn of: Lapsigyrus mutans (P.P. Carpenter, 1857) - (RISSOIDAE)
- Milleroceras, Subgenus Gonioloboceras (Milleroceras) Miller & Gurley, 1896 (GONIOLOBOCERATIDAE) (FOSSIL)
- Millerspira, Subgenus Holospira (Millerspira) L.H. Gilbertson & E. Naranjo-Garcia, 2004 (UROCOPTIDAE)
- millertianum, Hypacanthoplites millertianum (A.V.M.D. D'Orbigny, 1841 †) - (PARAHOPLITIDAE) (FOSSIL)
- millesquamata, Limea millesquamata (K.H.J. Thiele, 1920) - (LIMIDAE)
- millestriata, Torellia millestriata T.A. Okutani, 1964 - syn of: Haloceras millestriata (T.A. Okutani, 1964) - (CAPULIDAE)
- millestriata, Dupucharopa millestriata (E.A. Smith, 1874) - (CHAROPIDAE)
- millestriata, Haloceras millestriata (T.A. Okutani, 1964) - (HALOCERATIDAE)
- millestriata, Agathotoma millestriata E.A. Smith, 1882 - syn of: Agathotoma candidissima (C.B. Adams, 1845) - (MANGELIIDAE)
- millestriata, Holospira millestriata H.A. Pilsbry & J.H. Ferriss, 1915 - (UROCOPTIDAE)
- millestriata, Petricola millestriata J. Brown & H.A. Pilsbry, 1913 † - (VENERIDAE) (FOSSIL)
- millestriatus, Lanistes millestriatus H.A. Pilsbry & J.C. Bequaert, 1927 - syn of: Lanistes varicus (O.F. Müller, 1774) - (AMPULLARIIDAE)
- milleti, Clavatula milleti (S.A.A. Petit De La Saussaye, 1851) - (CLAVATULIDAE)
- milleti, Fusus milleti S.A.A. Petit De La Saussaye, 1851 - syn of: Clavatula milleti (S.A.A. Petit De La Saussaye, 1851) - (FASCIOLARIIDAE)
- milleti, Favartia milleti Ceulemans, van Dingenen, Merle & Landau, 2016 † - (MURICIDAE) (FOSSIL)
- milleti, Gibbula milleti B.M. Landau, L. Ceulemans & F. Van Dingenen, 2016 † - (TROCHIDAE) (FOSSIL)
- milleti, Vermicularia milleti (G.P. Deshayes, 1839 †) - (TURRITELLIDAE) (FOSSIL)
- milleti, Vermetus milleti G.P. Deshayes, 1839 † - (VERMETIDAE) (FOSSIL)
- milleti pseudoturritella, Vermetus milleti pseudoturritella Boettger, 1906 † - (VERMETIDAE) (FOSSIL)
- milleti subgranulatus, Clavatula milleti subgranulatus S.A.A. Petit De La Saussaye, 1851 - (CLAVATULIDAE)
- milletianus, Hypacanthoplites milletianus (A.V.M.D. D'Orbigny, 1841 †) - (PARAHOPLITIDAE) (FOSSIL)
- milletii, Anodonta milletii J.J. Ray & H. Drouët, 1848 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- milletioides, Hypacanthoplites milletioides T.L. Casey, 1965 † - (PARAHOPLITIDAE) (FOSSIL)
- millhorni, Pseudomonotis millhorni Hoare & al., 1978 † - (PSEUDOMONOTIDAE) (FOSSIL)
- milliacea, Olivella milliacea F.P. Marrat, 1871 - syn of: Olivella miliacea (F.P. Marrat, 1871) - (OLIVELLIDAE)
- millieri, Chilostoma millieri J.R. Bourguignat, 1880 - (HELICIDAE)
- millifila, Fugleria millifila (Dall) † - (ARCIDAE) (FOSSIL)
- milligani, Helix milligani C.M.D.E. Legrand, 1871 - syn of: Stenacapha hamiltoni (J.C. Cox, 1868) - (HELICIDAE)
- milligani, Ischnochiton versicolor milligani T. Iredale & W.L. May, 1916 - (ISCHNOCHITONIDAE)
- milligani, Victaphanta milligani (L. Pfeiffer, 1853) - (RHYTIDIDAE)
- Milligaretta, syn of: Genus Gari H.C.F. Schumacher, 1817 (PSAMMOBIIDAE)
- millingtoni, Fusimitra millingtoni (T.A. Conrad in Wailes, 1854 †) - (MITRIDAE) (FOSSIL)
- millipeda, Lambis millipeda C. Linnaeus, 1758 - syn of: Lambis millepeda (C. Linnaeus, 1758) - (STROMBIDAE)
- millipunctata, Retigyra millipunctata (H.B.S. Friele, 1886) - (SEGUENZIOIDEA (UNASSIGNED))
- millipunctatus, Limax millipunctatus N. Pini, 1885 - (LIMACIDAE)
- Millkoninckioceras, Genus Millkoninckioceras Kummel, 1963 (KONINCKIOCERATIDAE) (FOSSIL)
- milloni, Astralium milloni (B. Salvat, F. Salvat & G. Richard, 1973) - (TURBINIDAE)
- Millosevichia, Genus Millosevichia (CEPHALASPIDA (UNASSIGNED)) (FOSSIL)
- milloti, Ampelita milloti E. Fischer-Piette, 1952 - (ACAVIDAE)
- milloti, Kalidos milloti E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1966 - (ARIOPHANTIDAE)
- milloti, Kaliella milloti F. Salvat, 1966 - (CHRONIDAE)
- milloti, Boucardicus milloti E. Fischer-Piette & J. Bedoucha, 1965 - (CYCLOPHORIDAE)
- milloti, Anisoloma milloti E. Fischer-Piette & J. Bedoucha, 1965 - (FAUXULIDAE)
- milloti, Ctenophila milloti E. Fischer-Piette, F. Blanc & F. Salvat, 1975 - (HELICARIONIDAE)
- milloti, Acroptychia milloti E. Fischer-Piette & J. Bedoucha, 1965 - (MEGALOMASTOMIDAE)
- milloti, Cyclotopsis milloti E. Fischer-Piette, Ch.P. Blanc & D. Vukadinovic, 1974 - (POMATIIDAE)
- Millotorbis, Subgenus Cyclotus (Millotorbis) E. Fischer-Piette & J. Bedoucha, 1965 (CYCLOPHORIDAE)
- millsi, Glaphyrites millsi (Miller & Cline, 1934 †) - (GLAPHYRITIDAE) (FOSSIL)
- milneedwardsi, Calliostoma milneedwardsi (É.A.A. Locard, 1898) - (CALLIOSTOMATIDAE)
- milneedwardsi, Leptoconus milneedwardsi (F.P. Jousseaume, 1894) - (CONIDAE)
- milneedwardsi, Pecten milneedwardsi A. De Gregorio, 1898 - syn of: Amusium pleuronectes australiae (C. Linnaeus, 1758) - (PECTINIDAE)
- milneedwardsi, Philine milneedwardsi É.A.A. Locard, 1897 - syn of: Philine quadripartita P. Ascanius, 1772 - (PHILINIDAE)
- milneedwardsi, Georgia milneedwardsi (J.R. Bourguignat, 1881) - (POMATIIDAE)
- milneedwardsi, Pleurotoma milneedwardsi É.A.A. Locard, 1897 - syn of: Phymorhynchus sulciferus (K.J. Bush, 1893) - (TURRIDAE)
- milneedwardsi clytospira, Leptoconus milneedwardsi clytospira (J.C. Melvill & R. Standen, 1899) - (CONIDAE)
- milneedwardsi eduardi, Leptoconus milneedwardsi eduardi (A. Delsaerdt, 1997) - (CONIDAE)
- milneedwardsi lemuriensis, Leptoconus milneedwardsi lemuriensis (E. Wils & A. Delsaerdt, 1989) - (CONIDAE)
- milneedwardsiana, Achatina milneedwardsiana Revoil, 1885 - (ACHATINIDAE)
- milnei, Particulazona milnei P. Kaas, 1993 - (ISCHNOCHITONIDAE)
- milnelandensis, Costicamptonectes milnelandensis Fürsich, 1982 † - (PECTINIDAE) (FOSSIL)
- Milneria, Genus Milneria W.H. Dall, 1881 (CARDITIDAE)
- milolii, Hiona milolii H.B. Baker, 1940 - (EUCONULIDAE)
- milovanovici, Torreites milovanovici Grubic, 1979 † - (HIPPURITIDAE) (FOSSIL)
- Milovanovicia, Genus Milovanovicia Polsak, 1967 (RADIOLITIDAE) (FOSSIL)
- miltabrancha, Trapania miltabrancha T.M. Gosliner & S.J. Fahey, 2008 - (GONIODORIDIDAE)
- Miltha, Genus Miltha H. Adams & A. Adams, 1857 (LUCINIDAE)
- Milthea, syn of: Genus Miltha H. Adams & A. Adams, 1857 (LUCINIDAE)
- Milthona, Genus Milthona Marwick, 1931 (LUCINIDAE) (FOSSIL)
- Miltites, Genus Miltites Mojsisovics , 1893 (HALORITIDAE) (FOSSIL)
- Miltoceras, Genus Miltoceras Wiedenmayer , 1980 (COELOCERATIDAE) (FOSSIL)
- miltocheila, Pomacea miltocheila (L.A. Reeve, 1856) - (AMPULLARIIDAE)
- miltocheilus, Aspastus miltocheilus (L.A. Reeve, 1848) - (BOTHRIEMBRYONTIDAE)
- miltocheilus, Placostylus miltocheilus L.A. Reeve, 1848 - syn of: Aspastus miltocheilus (L.A. Reeve, 1848) - (BOTHRIEMBRYONTIDAE)
- miltocheilus, Bulimus miltocheilus L.A. Reeve, 1848 - syn of: Aspastus miltocheilus (L.A. Reeve, 1848) - (BULIMULIDAE)
- miltocheilus albolabris, Aspastus miltocheilus albolabris J.W. Brazier, 1895 - (BOTHRIEMBRYONTIDAE)
- miltocheilus manugiensis, Aspastus miltocheilus manugiensis B. Rensch, 1931 - (BOTHRIEMBRYONTIDAE)
- miltocheilus mayri, Aspastus miltocheilus mayri W.J. Clench, 1941 - (BOTHRIEMBRYONTIDAE)
- miltocheilus paravicinii, Aspastus miltocheilus paravicinii (B. Rensch, 1934) - (BOTHRIEMBRYONTIDAE)
- miltocheilus stramineus, Aspastus miltocheilus stramineus J.W. Brazier, 1895 - (BOTHRIEMBRYONTIDAE)
- miltochilus, Ampullaria miltochilus L.A. Reeve, 1856 - syn of: Pomacea miltocheila (L.A. Reeve, 1856) - (AMPULLARIIDAE)
- miltochrista, Collonista miltochrista (J.C. Melvill, 1918) - (COLLONIIDAE)
- miltochrista, Leptothyra miltochrista J.C. Melvill, 1918 - syn of: Collonista miltochrista (J.C. Melvill, 1918) - (COLLONIIDAE)
- miltochrous, Drymaeus miltochrous J.A. Albers, 1854 - (BULIMULIDAE)
- miltonis, Melo miltonis (J.E. Gray in E. Griffith & E. Pidgeon, 1833) - (VOLUTIDAE)
- miltostoma, Pseudamycla miltostoma (J.E. Tenison-Woods, 1877) - (COLUMBELLIDAE)
- miltozona, Apataxia cerithiiformis miltozona (J.R. le B. Tomlin, 1915) - (RISSOINIDAE)
- Miluna, Subgenus Heudeia (Miluna) A. Wagner, 1905 (HELICINIDAE)
- milvus, Chlamys milvus Cox, 1928 † - (PECTINIDAE) (FOSSIL)
- milyeringus, Strepsitaurus milyeringus G.A. Solem, 1997 - (CAMAENIDAE)
- mima, Luchuphaedusa mima (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- mima, Holopea mima J. Perner, 1903 † - syn of: Ptychospirina mima (J. Perner, 1903 †) - (HOLOPEIDAE) (FOSSIL)
- mima, Taniella mima P.A. Maxwell, 1988 † - (NATICIDAE) (FOSSIL)
- mima, Ptychospirina mima (J. Perner, 1903 †) - (PLATYCERATIDAE) (FOSSIL)
- Mima, syn of: Genus Sphincterochila C.M.F. Ancey, 1887 (SPHINCTEROCHILIDAE)
- mima, Metostracon mima H.A. Pilsbry, 1900 - (XANTHONYCHIDAE)
- mima tokunoshimana, Luchuphaedusa mima tokunoshimana H.A. Pilsbry, 1905 - (CLAUSILIIDAE)
- Mimachlamys, Genus Mimachlamys T. Iredale, 1929 (PECTINIDAE)
- Mimagoniatites, Genus Mimagoniatites Eichenberg , 1930 (MIMAGONIATITIDAE) (FOSSIL)
- MIMAGONIATITIDAE Miller, 1938 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AGONIATITIDA [Order]-AMIMAGONIATITOIDEA [Superfamily]) (FOSSIL)
- mimalongensis, Amnicola mimalongensis Pan, 1977 † - (AMNICOLIDAE) (FOSSIL)
- Mimanarcestes, Genus Mimanarcestes Bogoslovsky , 1969 (LATANARCESTIDAE) (FOSSIL)
- Mimarcaria, Genus Mimarcaria T. Iredale, 1939 (ARCIDAE)
- mimasakensis, Strombus mimasakensis M. Yokoyama, 1929 † - (STROMBIDAE) (FOSSIL)
- mimatensis, Juraphyllites mimatensis (A.V.M.D. D'Orbigny, 1844 †) - (JURAPHYLLITIDAE) (FOSSIL)
- mimatensis, Calliphylloceras mimatensis (A.V.M.D. D'Orbigny, 1845 †) - (PHYLLOCERATIDAE) (FOSSIL)
- Mimatys, Genus Mimatys T. Habe, 1952 (HAMINOEIDAE)
- mimbastaensis, Zebinella mimbastaensis (P. Lozouet, 2011 †) - (RISSOINIDAE) (FOSSIL)
- Mimelenchus, syn of: Genus Phasianella J.B.P.A. Lamarck, 1804 (PHASIANELLIDAE)
- mimer, Bositra mimer (Oberg 1877) † - (POSIDONIIDAE) (FOSSIL)
- mimer, Bositra mimer (Oeberg 1877 †) - (POSIDONIIDAE) (FOSSIL)
- Mimerodonta, Genus Mimerodonta Liljedahl, 1994 (MODIOMORPHIDAE) (FOSSIL)
- Mimetarion, Subgenus Prophysaon (Mimetarion) H.A. Pilsbry, 1948 (ANADENIDAE)
- mimetes, Broderiptella mimetes J. Brown & H.A. Pilsbry, 1911 † - (TURRITELLIDAE) (FOSSIL)
- mimetica, Bosellia mimetica S. Trinchese, 1891 - (BOSELLIIDAE)
- mimetica, Colus mimetica R. Tate, 1893 - syn of: Sassia mimetica (R. Tate, 1893) - (BUCCINIDAE)
- mimetica, Gibberula mimetica S. Gofas, 1989 - (CYSTISCIDAE)
- mimetica, Baptodoris mimetica T.M. Gosliner, 1991 - (DISCODORIDIDAE)
- mimetica, Cuthona mimetica A. Pruvot-Fol, 1930 - (FIONIDAE)
- mimetica, Lymnaea mimetica T.N. Annandale, 1918 - (LYMNAEIDAE)
- mimetica, Chondropoma mimetica (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- mimetica, Sassia mimetica (R. Tate, 1893) - (RANELLIDAE)
- mimeticus, Asteronotus mimeticus T.M. Gosliner & Á. Valdés, 2002 - (DISCODORIDIDAE)
- mimeticus, Eubranchus mimeticus K. Baba, 1975 - (EUBRANCHIDAE)
- mimeticus, Mimonion mimeticus (Woodring 1973) † - (PTERIIDAE) (FOSSIL)
- mimetus, Gymnotoceras mimetus Monnet & Bucher, 2005 † - (BEYRICHITIDAE) (FOSSIL)
- mimiae, Meekospira mimiae Erwin, 1988 † - (MEEKOSPIRIDAE) (FOSSIL)
- Mimiaxis, Subgenus Centralia (Mimiaxis) M.L. Jaume & C. de la Torre, 1972 (UROCOPTIDAE)
- Mimiaxis, syn of: Genus Centralia M.L. Jaume & C. de la Torre, 1972 (UROCOPTIDAE)
- mimica, Ptychohamulina mimica J.J. Vermeulen, 2005 † - (ANAHAMULINIDAE) (FOSSIL)
- mimica, Rhagada mimica T. Iredale, 1939 - (CAMAENIDAE)
- mimica, Phidiana mimica V. Padula, Wirtz & M. Schrödl, 2014 - (FACELINIDAE)
- mimica, Weyerella mimica (Ruan, 1981 †) - (GATTENDORFIIDAE) (FOSSIL)
- mimica, Lottia mimica D.R. Lindberg & J.H. McLean, 1981 - (LOTTIIDAE)
- mimica, Leptoxis mimica (H.H. Smith in C. Goodrich, 1922) - (PLEUROCERIDAE)
- mimica, Nepotilla mimica (G.B. III Sowerby, 1896) - (RAPHITOMIDAE)
- mimica, Trigonothracia mimica B.A. Marshall, 2002 - (THRACIIDAE)
- mimicum, Homalopoma mimicum P.I. LaFollette, 1976 - (COLLONIIDAE)
- Mimicuna, Genus Mimicuna P.U. Middelfart, 2002 (CONDYLOCARDIIDAE)
- mimicus, Hyolithus mimicus (Cobbold, 1931 †) - (CRESTJAHITIDAE) (FOSSIL)
- mimicus, Hyolithes mimicus Cobbold, 1931 † - (HYOLITHIDAE) (FOSSIL)
- mimicus, Strombinophos mimicus W.P. Woodring, 1964 † - (NASSARIIDAE) (FOSSIL)
- mimicus, Thaumoctopus mimicus M.D. Norman & F.G. Hochberg, 2005 - (OCTOPODIDAE)
- mimikirensis, Boreionectes mimikirensis Kurata & Kimura, 1951 † - (PECTINIDAE) (FOSSIL)
- Mimimitoceras, Genus Mimimitoceras Korn , 1988 (PRIONOCERATIDAE) (FOSSIL)
- mimiwhangata, Kokikora mimiwhangata F.M. Climo & J.F. Goulstone, 1995 - (PUNCTIDAE)
- mimiwilsoni, Haustellum mimiwilsoni E.H. Vokes, 1990 † - (MURICIDAE) (FOSSIL)
- Mimoceras, syn of: Genus Gyroceratites Meyer , 1831 (MIMOCERATIDAE) (FOSSIL)
- MIMOCERATIDAE Steinmann, 1890 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AGONIATITIDA [Order]-AMIMOSPHINCTOIDEA [Superfamily]) (FOSSIL)
- Mimolychnoceras, Genus Mimolychnoceras Zhuravleva, 1974 (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- Mimonion, Genus Mimonion Woodring, 1973 (PTERIIDAE) (FOSSIL)
- mimosa, Discocharopa mimosa (W.F. Petterd, 1879) - (CHAROPIDAE)
- Mimosphinctes, Genus Mimosphinctes Eichenberg , 1931 (MIMOSPHINCTIDAE) (FOSSIL)
- MIMOSPHINCTIDAE Erben, 1953 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AGONIATITIDA [Order]-AMIMOSPHINCTOIDEA [Superfamily]) (FOSSIL)
- Mimospira, Genus Mimospira Koken & Perner, 1925 (CLISOSPIRIDAE) (FOSSIL)
- mimotoi, Neritilia mimotoi Y. Kano, T. Sasaki & H. Ishikawa, 2001 - (NERITILIIDAE)
- Mimotornoceras, Genus Mimotornoceras Klug , 2002 (PINACITIDAE) (FOSSIL)
- mimula, Aegista mimula (H.A. Pilsbry, 1901) - (BRADYBAENIDAE)
- mimula, Dimya mimula W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - (DIMYIDAE)
- mimula, Gastrocopta mimula (W.H. Benson, 1853) - (GASTROCOPTIDAE)
- mimula, Goniodoris mimula Er. Marcus, 1955 - (GONIODORIDIDAE)
- mimula, Belgrandiella mimula M. Haase, 1996 - (HYDROBIIDAE)
- mimula, Patelloida mimula T. Iredale, 1924 - (LOTTIIDAE)
- mimulus, Barbatia mimulus T. Iredale, 1939 - syn of: Barbatia cometa (L.A. Reeve, 1844) - (ARCIDAE)
- mimus, Allorisma mimus (Whidborne 1896) † - (EDMONDIIDAE) (FOSSIL)
- mimus, Melanella mimus H.A. Pilsbry, 1918 - (EULIMIDAE)
- mimus, Diplodon mimus C.T. Simpson, 1914 - syn of: Diplodon expansus mimus C.T. Simpson, 1914 - (HYRIIDAE)
- mimus, Diplodon expansus mimus C.T. Simpson, 1914 - (HYRIIDAE)
- mimus, Octopus mimus A.A. Gould, 1852 - (OCTOPODIDAE)
- mimus, Scheltemaia mimus (A.H. Scheltema & C.F.C. Schander, 2000) - (PRUVOTINIDAE)
- mimus, Sanguinolites mimus Whidborne, 1896 † - (SANGUINOLITIDAE) (FOSSIL)
- mimus, Spondylus mimus A.A. Olsson, 1931 - (SPONDYLIDAE)
- mimys, Agladrillia mimys A.A. Olsson, 1964 † - (DRILLIIDAE) (FOSSIL)
- mimyum, Amusium mimyum W.P. Woodring, 1982 † - (PECTINIDAE) (FOSSIL)
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