- Inuda, syn of: Genus Cadlina L.S.R. Bergh, 1878 (CADLINIDAE)
- inumbilicata, Bembexia inumbilicata E.L. Yochelson & Dutro, 1960 † - (EOTOMARIIDAE) (FOSSIL)
- inunctus, Kerkophorus inunctus (Melvill & Ponsonby, 1899) - (UROCYCLIDAE)
- inurbana, Falsicolus inurbana C.R. Laws, 1932 † - (FASCIOLARIIDAE) (FOSSIL)
- inusitata, Barbatia inusitata W.P. Woodring, 1925 † - (ARCIDAE) (FOSSIL)
- inusitata, Amplirhagada inusitata F. Köhler, 2011 - (CAMAENIDAE)
- inusitata, Mangelia inusitata E. Rolán & J. Otero-Schmidt, 1999 - (MANGELIIDAE)
- inusitata, Beraunia inusitata Farrell, 1992 † - syn of: Anoriostoma inusitata (Farrell, 1992 †) - (ORIOSTOMATIDAE) (FOSSIL)
- inusitata, Lissarca inusitata (C.R. Laws, 1944 †) - (PHILOBRYIDAE) (FOSSIL)
- inusitata, Anoriostoma inusitata (Farrell, 1992 †) - (PORCELLIIDAE) (FOSSIL)
- inusitata, Cingula inusitata C. Beets, 1946 † - (RISSOIDAE) (FOSSIL)
- inusitatum, Maeneceras inusitatum Liang, 1980 † - (SPORADOCERATIDAE) (FOSSIL)
- inusitatum, Spirostemma inusitatum H. Vendryes, 1901 - (UROCOPTIDAE)
- inusitatus, Mesembrinus inusitatus H.C. Fulton, 1900 - (BULIMULIDAE)
- inusitatus, Spiraxis inusitatus (C.B. Adams, 1849) - (SPIRAXIDAE)
- inusta, Fusceulima inusta (C. Hedley, 1906) - (EULIMIDAE)
- inusta, Hebeulima inusta C. Hedley, 1906 - syn of: Oceanida graduata L. de Folin, 1871 - (EULIMIDAE)
- inusta, Leiostraca inusta C. Hedley, 1906 - syn of: Oceanida graduata L. de Folin, 1871 - (EULIMIDAE)
- inusta, Olivella inusta G.B. III Sowerby, 1915 - (OLIVELLIDAE)
- inutile, Danoceras inutile Flower, 1952 † - (DIESTOCERATIDAE) (FOSSIL)
- inutile, Sphaerium japonicum inutile H.A. Pilsbry, 1901 - (SPHAERIIDAE)
- inutilis, Cunearca inutilis P.O. Jung, 1965 † - (ARCIDAE) (FOSSIL)
- inutilis, Bulimulus inutilis L.A. Reeve, 1850 - (BULIMULIDAE)
- inutilis, Cyrtodontula inutilis (Reed, 1905 †) - (CYRTODONTIDAE) (FOSSIL)
- inutilis, Whitella inutilis Reed, 1905 † - syn of: Cyrtodontula inutilis (Reed, 1905 †) - (CYRTODONTIDAE) (FOSSIL)
- inutilis, Entolium demissus inutilis Whidborne † - (ENTOLIIDAE) (FOSSIL)
- inutilis, Hemicycla inutilis (A. Mousson, 1872) - (HELICIDAE)
- inutilis, Natica inutilis P.F. Röding, 1798 - (NATICIDAE)
- inutilis, Poteria inutilis E. Chitty, 1857 - (NEOCYCLOTIDAE)
- invadens, Deroceras invadens H. Reise, J.M.C. Hutchinson, S. Schunack & B. Schlitt, 2011 - (AGRIOLIMACIDAE)
- invaginatum, Cerithium invaginatum A.A. Gould, 1849 - syn of: Cerithium balteatum R.A. Philippi, 1848 - (CERITHIIDAE)
- invaginatum, Piloceras invaginatum Salter † - (PILOCERATIDAE) (FOSSIL)
- invaginatus, Beyrichoceratoides invaginatus Bisat, 1924 † - (MUENSTEROCERATIDAE) (FOSSIL)
- invalida, Plastiscala invalida (J.C. Verco, 1906) - (EPITONIIDAE)
- invalida, Epitonium invalida J.C. Verco, 1906 - syn of: Plastiscala invalida (J.C. Verco, 1906) - (EPITONIIDAE)
- invalida, Limopsis invalida J. Marwick, 1928 † - (LIMOPSIDAE) (FOSSIL)
- invalida, Ostrea invalida White, 1887 † - (OSTREIDAE) (FOSSIL)
- invalida, Pleurodonte invalida (C.B. Adams, 1850) - (PLEURODONTIDAE)
- invalidum, Dentalium invalidum W.K. Emerson, 1954 - (DENTALIIDAE)
- invalidum, Phylloceras invalidum Mojsisovics, 1873 † - syn of: Rhacophyllites invalidus (Mojsisovics, 1873 †) - (PHYLLOCERATIDAE) (FOSSIL)
- invalidus, Naesiotus invalidus P.H. Reibisch, 1892 - (BULIMULIDAE)
- invalidus, Rhacophyllites invalidus (Mojsisovics, 1873 †) - (DISCOPHYLLITIDAE) (FOSSIL)
- invalidus, Argopecten invalidus G.D. Hanna, 1924 † - (PECTINIDAE) (FOSSIL)
- invallatum, Teinostoma invallatum P.P. Carpenter, 1864 - (TORNIDAE)
- invariabile, Loxonema invariabile E.A.L. Kittl, 1894 † - (LOXONEMATIDAE) (FOSSIL)
- invariabilis, Almites invariabilis (Ruzhentsev, 1933 †) - (MARATHONITIDAE) (FOSSIL)
- invariabilis, Peritrochia invariabilis (Ruzhencev, 1956 †) - (VIDRIOCERATIDAE) (FOSSIL)
- invaricosum, Cerithium invaricosum N.H. Odhner, 1924 † - syn of: Stiracolpus huttoni (A.E.M. Cossmann, 1895 †) - (CERITHIIDAE) (FOSSIL)
- invaricosum, Ataxocerithium invaricosum N.H. Odhner, 1924 † - syn of: Stiracolpus huttoni (A.E.M. Cossmann, 1895 †) - (NEWTONIELLIDAE) (FOSSIL)
- invasa, Hyalina invasa L. Pfeiffer, 1855 - syn of: Stauroglypta anthoniana (C.B. Adams, 1849) - (MARGINELLIDAE)
- invavica, Suessonia invavica F. Traub, 1979 † - (STREPSIDURIDAE) (FOSSIL)
- invectita, Helicina invectita H.A. Pilsbry & E.G. Vanatta, 1928 - (HELICINIDAE)
- invectus, Monophorus invectus M. Harzhauser, 2014 † - (TRIPHORIDAE) (FOSSIL)
- invenusta, Chlanidota invenusta M.G. Harasewych & Y.I. Kantor, 1999 - (BUCCINIDAE)
- invenustum, Planetoceras invenustum Shimanskiy, 1967 † - (KONINCKIOCERATIDAE) (FOSSIL)
- invenustum, Pisidium invenustum (J.G.J. Kuiper, 1996) - (SPHAERIIDAE)
- invenustus, Unio invenustus I. Lea, 1874 - syn of: Elliptio fumata (I. Lea, 1857) - (UNIONIDAE)
- invernicata, Hemicycla invernicata (A. Mousson, 1872) - (HELICIDAE)
- inversa, Neptunea inversa F.W. Harmer, 1918 † - (BUCCINIDAE) (FOSSIL)
- inversa, Excussispira inversa (P.M. Heude, 1886) - (CLAUSILIIDAE)
- inversa, Cristataria leprevieri inversa (M. Szekeres, 1998) - (CLAUSILIIDAE)
- inversa, Erosaria inversa P.M. Pallary, 1900 - syn of: Erosaria spurca (C. Linnaeus, 1758) - (CYPRAEIDAE)
- inversa, Graptacme inversa (G.P. Deshayes, 1825) - (DENTALIIDAE)
- inversa, Paradoris inversa J.A. Ortea, 1995 - (DISCODORIDIDAE)
- inversa, Asuranena inversa A.A. Schileyko & S.E. Moiseeva, 1995 - (ENIDAE)
- inversa, Plagiostoma inversa (L. Waagen, 1881 †) - (LIMIDAE) (FOSSIL)
- inversa, Schileykula inversa B. Hausdorf, 1992 - (ORCULIDAE)
- inversa, Pseudomonotis inversa L. Waagen, 1881 † - syn of: Plagiostoma inversa (L. Waagen, 1881 †) - (PSEUDOMONOTIDAE) (FOSSIL)
- inversa, Terebra inversa P. Nyst, 1843 † - (TEREBRIDAE) (FOSSIL)
- inversa, Petricola inversa O. Macsotay & B. Campos, 2001 - (VENERIDAE)
- inversicolor, Pachystyla inversicolor (A.E.J. Férussac, 1821) - (HELICARIONIDAE)
- inversicolor, Littorina obtusata inversicolor P. Dautzenberg & H. Fischer, 1915 - (LITTORINIDAE)
- inversicolor, Strigatella inversicolor P. Dautzenberg & J.L. Bouge, 1923 - syn of: Mitra litterata J.B.P.A. Lamarck, 1811 - (MITRIDAE)
- inversicolor mauritianella, Pachystyla inversicolor mauritianella (P.M.A. Morelet) - (HELICARIONIDAE)
- Inversidens, Genus Inversidens F. Haas, 1911 (UNIONIDAE)
- inversiluna, Selenoptyx inversiluna H.A. Pilsbry, 1908 - (CLAUSILIIDAE)
- Inversiunio, Genus Inversiunio T. Habe, 1991 (UNIONIDAE)
- Inversoceras, Genus Inversoceras Hedström, 1917 † (TRIMEROCERATIDAE) (FOSSIL)
- inversum, Corculum inversum J.B.P.A. Lamarck, 1819 - syn of: Corculum cardissa (C. Linnaeus, 1758) - (CARDIIDAE)
- inversum, Cerithium inversum A. da Costa, 1830 - syn of: Monophorus perversus (C. Linnaeus, 1758) - (CERITHIIDAE)
- inversum, Graptacme inversum G.P. Deshayes, 1826 - syn of: Graptacme inversa (G.P. Deshayes, 1825) - (DENTALIIDAE)
- inversum, Manticoceras inversum (Wedekind, 1913 †) - (GEPHUROCERATIDAE) (FOSSIL)
- inversum, Parodiceras inversum Wedekind, 1918 † - syn of: Holzapfeloceras inversum (Wedekind, 1918 †) - (PARODOCERATIDAE) (FOSSIL)
- inversum, Holzapfeloceras inversum (Wedekind, 1918 †) - (SOBOLEWIIDAE) (FOSSIL)
- inversus, Amphidromus inversus (O.F. Müller, 1774) - (CAMAENIDAE)
- inversus, Cheiloceras inversus Sobolew, 1914 † - syn of: Cheiloceras rotundum (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- inversus, Onyxites inversus (Wenjukov, 1866 †) - (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- inversus albulus, Amphidromus inversus albulus C. Sutcharit & S. Panha, 2006 - (CAMAENIDAE)
- inversus andamanensis, Amphidromus inversus andamanensis L. Pfeiffer, 1871 - (CAMAENIDAE)
- inversus annamiticus, Amphidromus inversus annamiticus (J.C.H. Crosse & P.H. Fischer, 1863) - (CAMAENIDAE)
- inversus koperbergi, Amphidromus inversus koperbergi F.F. Laidlaw & G.A. Solem, 1961 - (CAMAENIDAE)
- inverta, Crossea inverta C. Hedley, 1907 - (CROSSEOLIDAE)
- inverta, Chrysallida inverta (C.F. Laseron, 1959) - (PYRAMIDELLIDAE)
- invertens, Koneprusellia invertens (J. Perner, 1907 †) - (PORCELLIIDAE) (FOSSIL)
- Invertospira, syn of: Genus Antispira Perner, 1903 † (ONYCHOCHILIDAE) (FOSSIL)
- investigator, Nuculana investigator (R.K. Dell, 1952) - (NUCULANIDAE)
- investigatoris, Drillia investigatoris (E.A. Smith, 1899) - (DRILLIIDAE)
- investigatoris, Ficus investigatoris (E.A. Smith, 1894) - (FICIDAE)
- investigatoris, Loliolus investigatoris C. Goodrich, 1896 - syn of: Loliolus hardwickei (J.E. Gray, 1849) - (LOLIGINIDAE)
- investigatoris, Myrtea investigatoris R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- investigatoris, Amussium investigatoris E.A. Smith, 1906 - syn of: Propeamussium investigatoris (E.A. Smith, 1906) - (PECTINIDAE)
- investigatoris, Propeamussium investigatoris (E.A. Smith, 1906) - (PROPEAMUSSIIDAE)
- investigatoris, Brachytoma investigatoris E.A. Smith, 1899 - syn of: Drillia investigatoris (E.A. Smith, 1899) - (PSEUDOMELATOMIDAE)
- investigatoris, Channelaxinus investigatoris (E.A. Smith, 1895) - (THYASIRIDAE)
- investigatus, Oxychilus investigatus F. Riedel, 1993 - (OXYCHILIDAE)
- investigatus, Schistophallus investigatus (A. Riedel, 1993) - (ZONITIDAE)
- invia, Plectopylis invia P.M. Heude, 1885 - syn of: Sicradiscus invius (P.M. Heude, 1885) - (PLECTOPYLIDAE)
- invicta, Mitra invicta Huang & Salisbury, 2017 - (MITRIDAE)
- invicta, Gemmula invicta J.C. Melvill, 1910 - syn of: Unedogemmula unedo (L.C. Kiener, 1839) - (TURRIDAE)
- invictus, Capulus invictus Whidborne, 1891 † - syn of: Platyostoma invictus (Whidborne, 1891 †) - (CAPULIDAE) (FOSSIL)
- invictus, Platyostoma invictus (Whidborne, 1891 †) - (PLATYCERATIDAE) (FOSSIL)
- invidiosa, Scapharca invidiosa T.L. Casey, 1903 † - (ARCIDAE) (FOSSIL)
- invieta, Tarebia invieta (A. Mousson) - (THIARIDAE)
- invisa, Merdigera invisa P.V. Kijashko, 2006 - (ENIDAE)
- invisa, Platyclymenia invisa Pajchlowa, 1972 † - (PLATYCLYMENIIDAE) (FOSSIL)
- invisibilis, Parashiela invisibilis (C. Hedley, 1899) - (RISSOIDAE)
- invisitata, Neilsonia invisitata Hoare & al., 1997 † - (GOSSELETINIDAE) (FOSSIL)
- invisus, Sicradiscus invisus P.M. Heude, 1885 - syn of: Sicradiscus invius (P.M. Heude, 1885) - (PLECTOPYLIDAE)
- invitabilis, Euphemites invitabilis (de Koninck, 1883 †) - (EUPHEMITIDAE) (FOSSIL)
- invittulina, Myophorella invittulina Saveliev, 1958 † - (MYOPHORELLIDAE) (FOSSIL)
- invitus, Zonites invitus F. Riedel & M. Mylonas, 1995 - (ZONITIDAE)
- invius, Sicradiscus invius (P.M. Heude, 1885) - (PLECTOPYLIDAE)
- invocata, Elliptica invocata Merklin & A. Petrov, 1962 † - syn of: Astarte borealis (H.C.F. Schumacher, 1817) - (ASTARTIDAE) (FOSSIL)
- invocatum, Exochoceras invocatum P.A. Zhuravleva, 1972 † - syn of: Chrysoceras tumidum (P.A. Zhuravleva, 1972 †) - (DISCOSORIDA (unassigned)) (FOSSIL)
- involuta, Achatina involuta A.A. Gould, 1845 - (ACHATINIDAE)
- involuta, Acteocina involuta (G. Nevill & H. Nevill, 1871) - (ACTEOCINIDAE)
- involuta, Acteocina crassiplica involuta McNeil, 1984 † - (ACTEOCINIDAE) (FOSSIL)
- involuta, Cochlorina involuta E.C. Von Martens, 1867 - (BULIMULIDAE)
- involuta, Varicopeza involuta K.H.J. Thiele, 1918 - syn of: Varicopeza pauxilla (A. Adams, 1855) - (CERITHIIDAE)
- involuta, Chama involuta R.J.L. Guppy, 1873 † - (CHAMIDAE) (FOSSIL)
- involuta, Charopa involuta N.H. Odhner, 1921 - (CHAROPIDAE)
- involuta, Clymenia involuta Wedekind, 1908 † - syn of: Platyclymenia involuta (Wedekind, 1908 †) - (CLYMENIIDAE) (FOSSIL)
- involuta, Cylichna involuta (C.B. Adams, 1850) - (CYLICHNIDAE)
- involuta, Eocylichna involuta (C.B. Adams, 1850) - syn of: Cylichna involuta (C.B. Adams, 1850) - (CYLICHNIDAE)
- involuta, Cyrtoclymenia involuta Nalivkina, 1936 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- involuta, Protactoclymenia involuta Wedekind, 1908 † - syn of: Platyclymenia involuta (Wedekind, 1908 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- involuta, Naticopsis involuta E.A.L. Kittl, 1892 † - (DELPHINULOPSIDAE) (FOSSIL)
- involuta, Dagnoceras involuta Renz & Renz, 1948 † - syn of: Metadagnoceras terbunicum (Arthaber, 1911 †) - (DINARITIDAE) (FOSSIL)
- involuta, Mucronalia involuta P.P. Carpenter, 1865 - (EULIMIDAE)
- involuta, Euomphalopsis involuta Ulrich & al., 1931 † - (EUOMPHALIDAE) (FOSSIL)
- involuta, Janthina involuta L.A. Reeve, 1858 - syn of: Janthina janthina (C. Linnaeus, 1758) - (JANTHINIDAE)
- involuta, Lymnaea involuta I.C. Thompson, 1840 - syn of: Myxa glutinosa (O.F. Müller, 1774) - (LYMNAEIDAE)
- involuta, Melanopsis involuta Handmann, 1882 † - (MELANOPSIDAE) (FOSSIL)
- Involuta, Genus Involuta Cox, 1931 † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- involuta, Microdiscula involuta C.F. Laseron, 1958 - (ORBITESTELLIDAE)
- involuta, Oriostoma involuta Barrois, 1889 † - (ORIOSTOMATIDAE) (FOSSIL)
- involuta, Platyclymenia involuta (Wedekind, 1908 †) - (PLATYCLYMENIIDAE) (FOSSIL)
- involuta, Uptonia involuta Meister, 1986 † - (POLYMORPHITIDAE) (FOSSIL)
- involuta, Chemnitzia involuta Stoppani, 1858 † - syn of: Omphaloptycha aldrovandii (Stoppani, 1857 †) - (PYRAMIDELLIDAE) (FOSSIL)
- involuta, Subulona involuta (A.A. Gould) - (SUBULINIDAE)
- involuta, Radiatula involuta (W.H. Benson, 1856) - (UNIONIDAE)
- involuta, Leiophyllites involuta Renz & Renz, 1948 † - syn of: Proptychitoides trigonalis (Arthaber, 1911 †) - (USSURITIDAE) (FOSSIL)
- involuta, Fagesia involuta Barber, 1957 † - (VASCOCERATIDAE) (FOSSIL)
- involuta arctica, Cyrtoclymenia involuta arctica Nalivkina, 1936 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- involuta crassa, Protactoclymenia involuta crassa Wedekind, 1914 † - syn of: Cyrtoclymenia frechi (Tokarenko, 1903 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- involuta curvistriata, Protactoclymenia involuta curvistriata Nalivkina, 1953 † - syn of: Cyrtoclymenia frechi (Tokarenko, 1903 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- involuta gracilis, Lenticlymenia involuta gracilis A. Schmidt, 1924 † - syn of: Cyrtoclymenia gracilis A. Schmidt, 1924 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- Involuticeras, Genus Involuticeras Salfeld, 1913 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- involutoides, Stenoglaphyrites involutoides Ruzhencev & Bogoslovskaya, 1978 † - (STENOGLAPHYRITIDAE) (FOSSIL)
- involutum, Planodiscoceras involutum J.K. Zhao & al., 1978 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- involutum, Coroniceras involutum Taylor, 1998 † - (ARIETITIDAE) (FOSSIL)
- involutum, Salpingostoma involutum E.F.R.K. Koken & J. Perner, 1925 † - (BUCANIIDAE) (FOSSIL)
- involutum, Miltoceras involutum Meister & al., 2011 † - (COELOCERATIDAE) (FOSSIL)
- involutum, Craspedostoma involutum Lindström, 1884 † - (CRASPEDOSTOMATIDAE) (FOSSIL)
- involutum, Cravenoceras involutum W.J. Gordon, 1964 † - syn of: Stenoglaphyrites involutus (W.J. Gordon, 1964 †) - (CRAVENOCERATIDAE) (FOSSIL)
- involutum, Ephippioceras involutum J.K. Zhao, 1954 † - syn of: Liroceras involutum (J.K. Zhao, 1954 †) - (EPHIPPOCERATIDAE) (FOSSIL)
- involutum, Eumorphoceras involutum Horn, 1960 † - (GIRTYOCERATIDAE) (FOSSIL)
- involutum, Stearoceras involutum Tucker, 1976 † - (GRYPOCERATIDAE) (FOSSIL)
- involutum, Pachystoma involutum L. von G. Tausch, 1886 † - syn of: Ariomphalus involutus (L. von G. Tausch, 1886 †) - (HELICINIDAE) (FOSSIL)
- involutum, Protodrepanostoma involutum (Thomä, 1845 †) - (HELICODONTIDAE) (FOSSIL)
- involutum, Lioceratoides involutum Smith & Tipper, 1996 † - (HILDOCERATIDAE) (FOSSIL)
- involutum, Huananoceras involutum Chao & Liang, 1974 † - (HUANANOCERATIDAE) (FOSSIL)
- involutum, Liroceras involutum (J.K. Zhao, 1954 †) - (LIROCERATIDAE) (FOSSIL)
- involutum, Cluthoceras involutum Pareyn, 1961 † - (MUENSTEROCERATIDAE) (FOSSIL)
- involutum, Radstockiceras involutum Pompeckj, 1907 † - (OXYNOTICERATIDAE) (FOSSIL)
- involutum, Uraloceras involutum (Voinova, 1934 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- involutum, Pharciceras involutum Bockwinkel, Becker & Ebbighausen, 2013 † - (PHARCICERATIDAE) (FOSSIL)
- involutum, Gemmellaroceras involutum Venturi & Ferri, 2001 † - (POLYMORPHITIDAE) (FOSSIL)
- involutum, Diaboloceras involutum Nassichuk, 1975 † - (SCHISTOCERATIDAE) (FOSSIL)
- involutum, Teinostoma involutum Hedley, 1902 - (TORNIDAE)
- involutum, Silenticeras involutum Tozer, 1994 † - (TRACHYCERATIDAE) (FOSSIL)
- involutum angitortum, Protodrepanostoma involutum angitortum (Jooss, 1912 †) - (HELICODONTIDAE) (FOSSIL)
- involutum deplanatum, Protodrepanostoma involutum deplanatum (Jooss, 1911 †) - (HELICODONTIDAE) (FOSSIL)
- involutum nordsiecki, Protodrepanostoma involutum nordsiecki (G. Falkner, 1986 †) - (HELICODONTIDAE) (FOSSIL)
- involutus, Acroloxus involutus (P.S. Pavlovic, 1903 †) - (ACROLOXIDAE) (FOSSIL)
- involutus, Lenticoceltites involutus J.K. Zhao & al., 1978 † - (ANDERSSONOCERATIDAE) (FOSSIL)
- involutus, Brayardites involutus Zakharov & Smyshlyaeva, 2013 † - (ARCTOCERATIDAE) (FOSSIL)
- involutus, Goniotremus involutus (Frech, 1894 †) - (BUCANIIDAE) (FOSSIL)
- involutus, Parakellnerites involutus Gu & al., 1980 † - (CERATITIDAE) (FOSSIL)
- involutus, Cyclophorus involutus (O.F. Müller, 1774) - (CYCLOPHORIDAE)
- involutus, Deshayesites involutus Spath † - (DESHAYESITIDAE) (FOSSIL)
- involutus, Subflemingites involutus (Welter, 1922 †) - (FLEMINGITIDAE) (FOSSIL)
- involutus, Goniatites involutus de Koninck, 1880 † - (GONIATITIDAE) (FOSSIL)
- involutus, Volviceramus involutus (Sowerby, 1828 †) - (INOCERAMIDAE) (FOSSIL)
- involutus, Arctohungarites involutus Kiparisova, 1937 † - (LONGOBARDITIDAE) (FOSSIL)
- involutus, Paranannites involutus Chao, 1959 † - (MELAGATHICERATIDAE) (FOSSIL)
- involutus, Proplanulites involutus Buckman † - (PERISPHINCTIDAE) (FOSSIL)
- involutus, Metaperrinites involutus (Liang, 1982 †) - (PERRINITIDAE) (FOSSIL)
- involutus, Shuangyangites involutus Liang, 1982 † - syn of: Metaperrinites involutus (Liang, 1982 †) - (PERRINITIDAE) (FOSSIL)
- involutus, Furlites involutus Venturi & Ferri, 2001 † - syn of: Gemmellaroceras involutum Venturi & Ferri, 2001 † - (POLYMORPHITIDAE) (FOSSIL)
- involutus, Tympanotonos involutus (J.B.P.A. Lamarck, 1804 †) - (POTAMIDIDAE) (FOSSIL)
- involutus, Prionites involutus Brühwiler & al., 2010 † - (PRIONITIDAE) (FOSSIL)
- involutus, Lucasites involutus Brühwiler & Bucher, 2012 † - (PRIONITIDAE) (FOSSIL)
- involutus, Xiaoqiaoceras involutus Brayard & Bucher, 2008 † - (PROPTYCHITIDAE) (FOSSIL)
- involutus, Eurycephalites involutus Riccardi & Westermann, 1991 † - (SPHAEROCERATIDAE) (FOSSIL)
- involutus, Stenoglaphyrites involutus (W.J. Gordon, 1964 †) - (STENOGLAPHYRITIDAE) (FOSSIL)
- involutus, Phaedrysmocheilus involutus E.S. Sobolev, 1989 † - (TAINOCERATIDAE) (FOSSIL)
- involutus, Ariomphalus involutus (L. von G. Tausch, 1886 †) - (VALVATIDAE) (FOSSIL)
- involutus, Xenodiscoides involutus (Frech, 1905 †) - (XENOCELTITIDAE) (FOSSIL)
- involutus a, Tympanotonos involutus a G.P. Deshayes, 1833 - (POTAMIDIDAE)
- involutus a, Diptychochilus involutus a A.E.M. Cossmann in Doncieux, 1908 † - syn of: Exechestoma cossmani R.B. Newton, 1922 † - (POTAMIDIDAE) (FOSSIL)
- involvens, Cymaclymenia involvens C.N. Lange, 1929 † - (CYMACLYMENIIDAE) (FOSSIL)
- involvulum, Anagaudryceras involvulum (F. Stoliczka, 1865 †) - (GAUDRYCERATIDAE) (FOSSIL)
- Inyoceras, Genus Inyoceras Tozer , 1994 † (XENOCELTITIDAE) (FOSSIL)
- inyoense, Pseudacrochordiceras inyoense (Smith, 1914 †) - (ACROCHORDICERATIDAE) (FOSSIL)
- inyoensis, Glaphyrites inyoensis W.J. Gordon, 1964 † - (GLAPHYRITIDAE) (FOSSIL)
- Inyoites, Genus Inyoites Hyatt & Smith, 1905 † (INYOITIDAE) (FOSSIL)
- INYOITIDAE Spath, 1934 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-NORITOIDEA [Superfamily]) (FOSSIL)
- Inzeroceras, Genus Inzeroceras Ruzhentsev, 1974 † (SCHISTOCERATIDAE) (FOSSIL)
- io, Ainohelix io H. Minato, 1983 - (BRADYBAENIDAE)
- io, Cancellaria io W.H. Dall, 1896 - (CANCELLARIIDAE)
- io, Cerithiopsis io W.H. Dall & P. Bartsch, 1911 - (CERITHIOPSIDAE)
- io, Anachis io P. Bartsch, 1915 - syn of: Anachis kraussii (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- io, Columbella io P. Bartsch, 1915 - syn of: Anachis kraussii (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- io, Benthocardiella io (P. Bartsch, 1915) - (CONDYLOCARDIIDAE)
- io, Rochefortia io P. Bartsch, 1915 - syn of: Benthocardiella io (P. Bartsch, 1915) - (LASAEIDAE)
- Io, Genus Io I. Lea, 1831 (PLEUROCERIDAE)
- io, Rissoina io P. Bartsch, 1915 - (RISSOINIDAE)
- io, Finella io (P. Bartsch, 1911) - (SCALIOLIDAE)
- io, Gulella io B. Verdcourt, 1974 - (STREPTAXIDAE)
- ioani, Astarte ioani Z.A. Filatova, 1957 - syn of: Astarte compacta Carpenter, 1864 - (ASTARTIDAE)
- ioanis, Gyraulus ioanis P. Glöer & V.M. Pešic, 2007 - (PLANORBIDAE)
- iochrous, Cerithiopsis iochrous M. Jay & J. Drivas, 2002 - (CERITHIOPSIDAE)
- iocosensis, Bostryx iocosensis (P. Dautzenberg, 1901) - (BULIMULIDAE)
- iocosensis, Peronaeus iocosensis P. Dautzenberg, 1901 - syn of: Bostryx iocosensis (P. Dautzenberg, 1901) - (BULIMULIDAE)
- iodes, Prosipho iodes P.G. Oliver & G.B. Picken, 1984 - (BUCCINIDAE)
- Iodes, syn of: Subgenus Janthina (Jodes) O.A.L. Mörch, 1860 (JANTHINIDAE)
- iodes, Nassarius iodes (W.H. Dall, 1917) - (NASSARIIDAE)
- iodina, Corbicula iodina P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- Iodina, syn of: Subgenus Janthina (Jodina) O.A.L. Mörch, 1860 (JANTHINIDAE)
- iodinea, Flabellina iodinea (J.G. Cooper, 1863) - (FLABELLINIDAE)
- iodolabiata, Pseudorhaphitoma iodolabiata (A. Hornung & G. Mermod, 1929) - (MANGELIIDAE)
- iodostoma, Cantharus iodostoma J.E. Gray, 1834 - syn of: Prodotia iostoma (J.E. Gray, 1834) - (BUCCINIDAE)
- iodostoma, Mitrella iodostoma J.S. Gaskoin, 1851 - syn of: Mitrella puella (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- iodostoma, Pyrene iodostoma J.S. Gaskoin, 1851 - syn of: Mitrella puella (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- iodostoma, Graphiconus iodostoma (L.A. Reeve, 1843) - (CONIDAE)
- iodostoma, Drupa iodostoma R.P. Lesson, 1840 - syn of: Drupa morum iodostoma (R.P. Lesson, 1840) - (MURICIDAE)
- iodostoma, Drupa morum iodostoma (R.P. Lesson, 1840) - (MURICIDAE)
- iodostomus, Drymaeus iodostomus L. Deville & L.H. Hupé, 1850 - (BULIMULIDAE)
- iodostylus, Bulimus iodostylus L. Pfeiffer, 1861 - syn of: Mesembrinus ghiesbreghti iodostylus L. Pfeiffer, 1861 - (BULIMULIDAE)
- iodostylus, Mesembrinus ghiesbreghti iodostylus L. Pfeiffer, 1861 - (BULIMULIDAE)
- ioes, Cylindrophaedusa ioes (W.H. Benson, 1852) - (CLAUSILIIDAE)
- ioes jiriensis, Cylindrophaedusa ioes jiriensis H. Nordsieck, 1973 - (CLAUSILIIDAE)
- ioessa, Gymnobela ioessa A.V. Sysoev, 1997 - (RAPHITOMIDAE)
- iofasciata, Polymita picta iofasciata C. de la Torre, 1950 - (HELMINTHOGLYPTIDAE)
- iohannae, Synthopsis iohannae (A. Cecalupo & I. Perugia, 2012) - (CERITHIOPSIDAE)
- iohannesbaptistae, Samiolus iohannesbaptistae S. Kiel & M. Taviani, 2017 † - (MYTILIDAE) (FOSSIL)
- ioides, Littorina ioides K.T. Menke, 1845 - syn of: Littorina obtusata (C. Linnaeus, 1758) - (LITTORINIDAE)
- iola, Clathroterebra iola (H.A. Pilsbry & H.N. Lowe, 1932) - (TEREBRIDAE)
- iolabiata, Hemitrochus compta iolabiata C.G. Aguayo & M.L. Jaume, 1954 - (CEPOLIDAE)
- Iolaea, Subgenus Odostomia (Iolaea) A. Adams, 1867 (PYRAMIDELLIDAE)
- iolarynx, Lignus iolarynx (R.J. Shuttleworth, 1856) - (ACHATINIDAE)
- iolausi, Turbonilla iolausi P. Bartsch, 1955 - (PYRAMIDELLIDAE)
- iole, Fusiturricula iole W.P. Woodring, 1928 - (DRILLIIDAE)
- Iolea, syn of: Subgenus Odostomia (Iolaea) A. Adams, 1867 (PYRAMIDELLIDAE)
- iolimbata, Polymita picta iolimbata C. de la Torre, 1950 - (HELMINTHOGLYPTIDAE)
- Iolina, syn of: Subgenus Odostomia (Iolaea) A. Adams, 1867 (PYRAMIDELLIDAE)
- iolinensis, Eovoluta iolinensis J.M. Pacaud, 2016 † - (VOLUTIDAE) (FOSSIL)
- ione, Placunanomia ione J.E. Gray, 1850 - syn of: Monia zelandica (J.E. Gray, 1843) - (ANOMIIDAE)
- ione, Conasprella ione (H.C. Fulton, 1938) - (CONIDAE)
- ione, Endemoconus ione (H.C. Fulton, 1938) - syn of: Conasprella ione (H.C. Fulton, 1938) - (CONIDAE)
- ione, Drillia ione J.C. Melvill & R. Standen, 1896 - syn of: Anacithara ione (J.C. Melvill & R. Standen, 1896) - (DRILLIIDAE)
- ione, Scintilla ione J.T. Kuroda & Iw. Taki - (GALEOMMATIDAE)
- ione, Anacithara ione (J.C. Melvill & R. Standen, 1896) - (HORAICLAVIDAE)
- ione fulva, Anacithara ione fulva (J.L. Bouge & P. Dautzenberg, 1914) - (HORAICLAVIDAE)
- ione maculata, Anacithara ione maculata (J.L. Bouge & P. Dautzenberg, 1914) - (HORAICLAVIDAE)
- ionensis, Modiolus ionensis L.C. Glenn, 1904 † - (MYTILIDAE) (FOSSIL)
- ionfasciatus, Acteon ionfasciatus Á. Valdés, 2008 - (ACTEONIDAE)
- ionica, Cocculina ionica (F. Nordsieck, 1973) - (COCCULINIDAE)
- ionica, Leukadiella ionica Renz & Renz, 1947 † - (HILDOCERATIDAE) (FOSSIL)
- ionica, Belgrandia ionica (H. Schütt, 1980) - (HYDROBIIDAE)
- ionica, Cernuella ionica A. Mousson, 1854 - syn of: Cernuella jonica (A. Mousson, 1854) - (HYGROMIIDAE)
- ionica, Lepetella ionica F. Nordsieck, 1974 - (LEPETELLIDAE)
- ionica, Benthomangelia macra ionica F. Nordsieck, 1977 - (MANGELIIDAE)
- ionica, Mediterranea ionica F. Riedel & P. Subai, 1978 - (OXYCHILIDAE)
- ionica, Mediterranea ionica F. Käufel, 1930 - syn of: Allaegopis ionicus (F. Käufel, 1930) - (OXYCHILIDAE)
- ionica, Tibia ionica G. Perry, 1811 - syn of: Tibia fusus (C. Linnaeus, 1758) - (ROSTELLARIIDAE)
- ionica, Quinnia ionica (R.B. Watson, 1878) - (SEGUENZIIDAE)
- ionica, Gibbula ionica F. Nordsieck, 1982 - (TROCHIDAE)
- ionicae, Abida secale ionicae B. Kokshoorn & E. Gittenberger, 2010 - (CHONDRINIDAE)
- ionicus, Protogrammoceras ionicus Dommergues & al., 2000 † - (HILDOCERATIDAE) (FOSSIL)
- ionicus, Allaegopis ionicus (F. Käufel, 1930) - (ZONITIDAE)
- ionida, Euplica ionida (P.L. Duclos, 1840) - (COLUMBELLIDAE)
- ionida, Columbella ionida P.L. Duclos, 1840 - syn of: Euplica ionida (P.L. Duclos, 1840) - (COLUMBELLIDAE)
- ionnae, Galeojanolus ionnae M.C. Miller, 1971 - (PROCTONOTIDAE)
- ionopsis, Oliva ionopsis S.S. Berry, 1969 - syn of: Oliva spicata (P.F. Röding, 1798) - (OLIVIDAE)
- iontha, Cerithiopsis iontha P. Bartsch, 1911 - (CERITHIOPSIDAE)
- iontha, Suturoglypta iontha (E. Ravenel, 1861) - (COLUMBELLIDAE)
- iontha, Columbella iontha E. Ravenel, 1861 - syn of: Suturoglypta iontha (E. Ravenel, 1861) - (COLUMBELLIDAE)
- iontha, Anachis iontha E. Ravenel, 1861 - syn of: Suturoglypta iontha (E. Ravenel, 1861) - (COLUMBELLIDAE)
- ionthados, Calloarca ionthados (P.G. Oliver & R. von Cosel, 1993) - (ARCIDAE)
- ionthodes, Cypraea ionthodes J.C. Melvill, 1888 - syn of: Cypraea tigris C. Linnaeus, 1758 - (CYPRAEIDAE)
- Iopas, syn of: Genus Nassa P.F. Röding, 1798 (MURICIDAE)
- Iopsis, syn of: Genus Zebina H. Adams & A. Adams, 1854 (ZEBINIDAE)
- iopuei, Joculator iopuei Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- ios, Tricolia ios R. Robertson, 1985 - (PHASIANELLIDAE)
- ios, Provanna ios A. Warén & P. Bouchet, 1986 - (PROVANNIDAE)
- iosaturatum, Chondropometes torrei iosaturatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- iospira, Clathurella iospira (R.P.J. Hervier, 1897) - (CLATHURELLIDAE)
- iospira, Pseudodaphnella iospira R.P.J. Hervier, 1897 - syn of: Clathurella iospira (R.P.J. Hervier, 1897) - (RAPHITOMIDAE)
- iospira fulvescens, Clathurella iospira fulvescens R.P.J. Hervier, 1897 - (CLATHURELLIDAE)
- iostoma, Achatina iostoma L. Pfeiffer, 1852 - (ACHATINIDAE)
- iostoma, Prodotia iostoma (J.E. Gray, 1834) - (BUCCINIDAE)
- iostoma, Chama limbula iostoma T.A. Conrad, 1837 - (CHAMIDAE)
- iostoma, Strigilecula cana iostoma (E.A. Bielz, 1856) - (CLAUSILIIDAE)
- iostoma, Polymita picta iostoma C. de la Torre, 1950 - (HELMINTHOGLYPTIDAE)
- iostoma, Morula iostoma L.A. Reeve, 1844 - (MURICIDAE)
- iostoma, Murex iostoma A. Adams, 1853 - syn of: Spinidrupa euracantha (Adams, 1853) - (MURICIDAE)
- iostoma, Murex iostoma G.B. II Sowerby, 1834 - syn of: Muricodrupa fiscella (J.F. Gmelin, 1791) - (MURICIDAE)
- iostoma, Natica iostoma K.T. Menke - syn of: Natica broderipiana C.A. Récluz, 1844 - (NATICIDAE)
- iostoma, Porphyrobaphe iostoma (G.B. I Sowerby, 1824) - (ORTHALICIDAE)
- iostoma, Charonia iostoma J.E. Gray, 1834 - syn of: Prodotia iostoma (J.E. Gray, 1834) - (RANELLIDAE)
- iostoma, Turbinella iostoma H.C. Küster & W. Kobelt, 1874 - syn of: Peristernia columbarium (J.F. Gmelin, 1791) - (TURBINELLIDAE)
- iostoma bilabratus, Porphyrobaphe iostoma bilabratus H.A. Pilsbry, 1899 - (ORTHALICIDAE)
- iostoma billeheusti, Prodotia iostoma billeheusti S.M. Souverbie - (BUCCINIDAE)
- iostoma phasianella, Porphyrobaphe iostoma phasianella (A. Valenciennes, 1833) - (ORTHALICIDAE)
- iostomum, Cerion iostomum (L. Pfeiffer, 1854) - (CERIONIDAE)
- iostomum arangoi, Cerion iostomum arangoi H.A. Pilsbry & E.G. Vanatta, 1896 - syn of: Cerion arangoi (H.A. Pilsbry & E.G. Vanatta, 1896) - (CERIONIDAE)
- iostomum moreleti, Cerion iostomum moreleti W.J. Clench & C.G. Aguayo, 1951 - (CERIONIDAE)
- iostomus, Muricidea iostomus H. Adams & A. Adams, 1853 - syn of: Morula spinosa (H. Adams & A. Adams, 1853) - (MURICIDAE)
- iostomus, Potamides iostomus L. Pfeiffer, 1839 - syn of: Cerithideopsis pliculosa (K.T. Menke, 1829) - (POTAMIDIDAE)
- iota, Volvula iota (T.A. Conrad, 1843 †) - (ACTEOCINIDAE) (FOSSIL)
- iota, Ancilla iota R.N. Kilburn, 1981 - (ANCILLARIIDAE)
- iota, Acar iota T. Iredale, 1939 - syn of: Acar congenita (E.A. Smith, 1885) - (ARCIDAE)
- iota, Trigonostoma iota T.A. Garrard, 1975 - (CANCELLARIIDAE)
- iota, Cerithiopsis iota (C.B. Adams, 1845) - (CERITHIOPSIDAE)
- iota, Norfolcioconcha iota H.B. Preston, 1913 - (CHAROPIDAE)
- iota, Pusia iota C.N. Cate, 1963 - syn of: Vexillum castum (H. Adams, 1872) - (COSTELLARIIDAE)
- iota, Cyathopoma micron iota H.A. Pilsbry & Y. Hirase, 1904 - (CYCLOPHORIDAE)
- iota, Cystiscus iota (C. Hedley, 1899) - (CYSTISCIDAE)
- iota, Halgerda iota N. Yonow, 1994 - (DISCODORIDIDAE)
- iota, Minidonta iota F.J. Brook, 2010 - (ENDODONTIDAE)
- iota, Eulima iota C.B. Adams, 1852 - (EULIMIDAE)
- iota, Cecilioides iota (C.B. Adams, 1845) - (FERUSSACIIDAE)
- iota, Gadila iota (J. Henderson, 1920) - (GADILIDAE)
- iota, Bathyxylophila iota B.A. Marshall, 1988 - (LAROCHEIDAE)
- iota, Eucithara iota A.A. Gould, 1860 - syn of: Eucithara lota (A.A. Gould, 1860) - (MANGELIIDAE)
- iota, Marginella iota C. Hedley, 1899 - syn of: Cystiscus iota (C. Hedley, 1899) - (MARGINELLIDAE)
- iota, Belloliva iota Y.I. Kantor & P. Bouchet, 2007 - (OLIVIDAE)
- iota, Odostomia iota P.A. Maxwell, 1992 † - (PYRAMIDELLIDAE) (FOSSIL)
- iota, Chemnitzia iota A.A. Gould, 1861 - (PYRAMIDELLIDAE)
- iota, Sinezona iota (H.J. Finlay, 1926) - (SCISSURELLIDAE)
- iota, Seguenzia iota B.A. Marshall, 1991 - (SEGUENZIIDAE)
- iota, Lodderia iota A.W.B. Powell, 1940 - (SKENEIDAE)
- iota, Dolichupis iota (C.N. Cate, 1979) - (TRIVIIDAE)
- iota, Turritella iota W.P. Popenoe, 1937 † - (TURRITELLIDAE) (FOSSIL)
- iota, Truncatellina iota (J.C. Melvill & J.H. Ponsonby, 1894) - (VERTIGINIDAE)
- iota nana, Gadila iota nana (W.J. Clench & C.G. Aguayo, 1939) - (GADILIDAE)
- iotaptyx, Tyrannophaedusa iotaptyx (H.A. Pilsbry, 1900) - (CLAUSILIIDAE)
- Ioteuthion, syn of: Genus Pterygioteuthis P. Fischer, 1896 (PYROTEUTHIDAE)
- Iothia, Genus Iothia E. Forbes, 1849 (LEPETIDAE)
- iotoides, Melanella iotoides P. Bartsch, 1916 - (EULIMIDAE)
- Iotrigonia, Genus Iotrigonia van Hoepen, 1929 † (IOTRIGONIIDAE) (FOSSIL)
- IOTRIGONIIDAE Saveliev, 1958 † - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-TRIGONIIDA [Order]-MEGATRIGONIOIDEA [Superfamily]) (FOSSIL)
- Iotula, Genus Iotula T. Iredale, 1941 (PUNCTIDAE)
- Iotyrris, Genus Iotyrris A.I. Medinskaya & A.V. Sysoev, 2001 (TURRIDAE)
- Iouannetia, syn of: Genus Jouannetia C. des Moulins, 1828 (PHOLADIDAE)
- ioujimensis, Homalopoma ioujimensis S. Kosuge & Koizumi, 1990 - (COLLONIIDAE)
- iouspi, Pleurobranchus iouspi Ev. Marcus, 1984 - (PLEUROBRANCHIDAE)
- iovacea, Dolabrifera iovacea W.H. Pease, 1860 - syn of: Dolabrifera dolabrifera (P.C.A.S.L. Rang, 1828) - (APLYSIIDAE)
- iowaense, Hipparionoceras iowaense Flower, 1945 † - (POLYELASMOCERATIDAE) (FOSSIL)
- iowaense, Tornoceras iowaense Miller, 1938 † - (TORNOCERATIDAE) (FOSSIL)
- iowaensis, Holopea iowaensis W.H. Webster, 1906 † - (HOLOPEIDAE) (FOSSIL)
- iowense, Paralegoceras iowense (F.B. Meek & A.H. Worthen, 1860 †) - (SCHISTOCERATIDAE) (FOSSIL)
- iowense, Westonoceras iowense Foerste & Teichert, 1930 † - (WESTONOCERATIDAE) (FOSSIL)
- Iowoceras, Genus Iowoceras † (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- iozona, Columbella iozona R.P.J. Hervier, 1900 - syn of: Mitromorpha iozona (R.P.J. Hervier, 1900) - (COLUMBELLIDAE)
- iozona, Mitromorpha iozona (R.P.J. Hervier, 1900) - (MITROMORPHIDAE)
- ipacoyana, Palmadusta androyensis ipacoyana L. Bozzetti, 2006 - (CYPRAEIDAE)
- ipara, Mangelia ipara W.H. Dall, 1881 - syn of: Pleurotomella ipara (W.H. Dall, 1881) - (MANGELIIDAE)
- ipara, Pleurotomella ipara (W.H. Dall, 1881) - (RAPHITOMIDAE)
- iparia, Murella platychela iparia (L. Benoit, 1857) - (HELICIDAE)
- Iphiana, Subgenus Syrnola (Iphiana) W.H. Dall & P. Bartsch, 1904 (PYRAMIDELLIDAE)
- Iphigena, syn of: Subgenus Macrogastra (Pseudovestia) H. Nordsieck, 1977 (CLAUSILIIDAE)
- Iphigenia, syn of: Genus Alinda H. Adams & A. Adams, 1855 (CLAUSILIIDAE)
- iphigenia, Ctenodonta iphigenia Billings, 1865 † - (CTENODONTIDAE) (FOSSIL)
- Iphigenia, Genus Iphigenia H.C.F. Schumacher, 1817 (DONACIDAE)
- iphigenia, Nucula iphigenia (W.H. Dall, 1896) - (NUCULIDAE)
- iphigenia, Lamellinucula iphigenia W.H. Dall, 1896 - syn of: Nucula iphigenia (W.H. Dall, 1896) - (NUCULIDAE)
- iphigenia, Oxychilus iphigenia (W.A. Lindholm, 1926) - (OXYCHILIDAE)
- iphigenia, Hyalinia iphigenia W.A. Lindholm, 1926i - syn of: Oxychilus iphigenia (W.A. Lindholm, 1926) - (ZONITIDAE)
- iphigenia azulensis, Nucula iphigenia azulensis A.A. Olsson, 1942 - (NUCULIDAE)
- iphigeniae, Oxychilus iphigeniae (W.A. Lindholm, 1926) - (OXYCHILIDAE)
- iphigeniae, Retinella iphigeniae W.A. Lindholm, 1926 - (ZONITIDAE)
- Iphinoe, Subgenus Trichotropis (Iphinoe) H. Adams & A. Adams, 1854 (CAPULIDAE)
- Iphinoella, syn of: Genus Iphinopsis W.H. Dall, 1924 (CANCELLARIIDAE)
- Iphinopsis, Genus Iphinopsis W.H. Dall, 1924 (CANCELLARIIDAE)
- iphis, Syntomodrillia iphis W.P. Woodring, 1928 † - (DRILLIIDAE) (FOSSIL)
- Iphitella, syn of: Genus Iphitus J.G. Jeffreys, 1883 (NYSTIELLIDAE)
- iphitus, Metaclavites iphitus Spath, 1926 † - (HOPLITIDAE) (FOSSIL)
- Iphitus, Genus Iphitus J.G. Jeffreys, 1883 (NYSTIELLIDAE)
- ippeni, Acrochordiceras ippeni Arthaber, 1911 † - syn of: Acrochordiceras carolinae Mojsisovics, 1882 † - (ACROCHORDICERATIDAE) (FOSSIL)
- Ipsa, Genus Ipsa F.P. Jousseaume, 1884 (CYPRAEIDAE)
- ipse, Panderevela ipse J.A. Ortea, L. Moro & J. Espinosa, 2015 - (COSTASIELLIDAE)
- ipswichense, Spirostemma ipswichense H.A. Pilsbry, 1903 - (UROCOPTIDAE)
- Ipunina, Genus Ipunina Nielsen & Frassinetti, 2008 † (LITIOPIDAE) (FOSSIL)
- ipupiara, Doryssa ipupiara L.R.L. Simone, 2001 - (PACHYCHILIDAE)
- iqualaensis, Coelostemma iqualaensis (P. Bartsch, 1926) - (UROCOPTIDAE)
- iquitensis, Onobops iquitensis Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- iquitensis, Pachydon iquitensis Greve, 1938 † - (CORBULIDAE) (FOSSIL)
- iquito, Pisidium iquito C.F. Ituarte, 2004 - (SPHAERIIDAE)
- ira, Caryocorbula ira (W.H. Dall, 1908) - (CORBULIDAE)
- ira, Melanella ira W.H. Dall, 1927 - (EULIMIDAE)
- ira, Terebra ira H.A. Pilsbry & H.N. Lowe, 1932 - syn of: Terebra guayaquilensis (E.A. Smith, 1880) - (TEREBRIDAE)
- iracema, Kora iracema (L.R.L. Simone, 2015) - (BULIMULIDAE)
- iradieri, Sinistrexcisa iradieri A.J. de Winter, R. Gomez & C.E. Prieto, 1999 - (STREPTAXIDAE)
- irafca, Hemiliostraca irafca (P. Bartsch, 1915) - (EULIMIDAE)
- irafca, Odostomia irafca P. Bartsch, 1915 - (PYRAMIDELLIDAE)
- irakita, Euglandina irakita J.A. Jardim, D. Abbate & L.R.L. Simone, 2013 - (SPIRAXIDAE)
- Iraklimelania, Genus Iraklimelania Willmann, 1981 † (HYDROBIIDAE) (FOSSIL)
- irana, Pseudobithynia irana P. Glöer & V.M. Pešic, 2006 - (BITHYNIIDAE)
- iranense, Araxoceras iranense Zakharov & Moussavi Abnavi, 2010 † - (ARAXOCERATIDAE) (FOSSIL)
- iranica, Indoplacuna iranica (E.W. Vredenburg, 1923 †) - (ANOMIIDAE) (FOSSIL)
- iranica, Primahinnites iranica Repin 1996 † - (AVICULOPECTINIDAE) (FOSSIL)
- iranica, Radix iranica (T.N. Annandale & B. Prashad, 1919) - (LYMNAEIDAE)
- iranica, Gruenewaldia iranica Hautmann, 2001 † - (MYOPHORIIDAE) (FOSSIL)
- iranica, Placuna iranica E.W. Vredenburg, 1924 † - (PLACUNIDAE) (FOSSIL)
- iranica, Protorcula iranica A. Nützel & al., 2012 † - (PROTORCULIDAE) (FOSSIL)
- iranicus, Trochonodus iranicus A. Nützel & al., 2003 † - (EUCYCLIDAE) (FOSSIL)
- iraniense, Knemiceras iraniense M. Collignon, 1983 † - (KNEMICERATIDAE) (FOSSIL)
- iraniense, Legumen iraniense Collignon 1981 † - (VENERIDAE) (FOSSIL)
- Iranites, Genus Iranites Teichert & Kummel, 1973 † (XENODISCIDAE) (FOSSIL)
- iranjanense, Microfragum iranjanense E. Fischer-Piette, 1977 - syn of: Microfragum erugatum (R. Tate, 1889) - (CARDIIDAE)
- Iranoceras, Genus Iranoceras Walliser, 1966 † (SPORADOCERATIDAE) (FOSSIL)
- Iranognomon, Subgenus Isognomon (Iranognomon) Repin, 2008 † (MALLEIDAE) (FOSSIL)
- Iranoknemiceras, Subgenus Knemiceras (Iranoknemiceras) Mahmoud, 1955 † (KNEMICERATIDAE) (FOSSIL)
- Iranopsis, Genus Iranopsis Bank & Neubert, 1998 (ENIDAE)
- Iranothyra, syn of: Genus Gangetia C.M.F. Ancey, 1890 (STENOTHYRIDAE)
- Iranoxychilus, Genus Iranoxychilus A. Riedel, 1998 (OXYCHILIDAE)
- iraonensis, Lima iraonensis R.B. Newton, 1895 † - (LIMIDAE) (FOSSIL)
- iraonensis, Gervillia iraonensis R.B. Newton, 1895 † - (MYALINIDAE) (FOSSIL)
- iraqensis, Melanopsis iraqensis P.M. Pallary, 1939 - (MELANOPSIDAE)
- iraqensis, Stenothyra iraqensis S.P. Dance & F.E. Eames, 1966 - (STENOTHYRIDAE)
- iraqensis, Iraqitellina iraqensis S.P. Dance & F.E. Eames, 1966 - syn of: Tellinangulus aethiopicus (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (TELLINIDAE)
- iraqensis lutea, Melanopsis iraqensis lutea P.M. Pallary, 1939 - (MELANOPSIDAE)
- iraqensis subplicata, Melanopsis iraqensis subplicata P.M. Pallary, 1939 - (MELANOPSIDAE)
- Iraqetrema, syn of: Genus Etremopa K. Oyama, 1953 (CLATHURELLIDAE)
- Iraqitellina, syn of: Subgenus Angulus (Tellinangulus) K.H.J. Thiele, 1934 (TELLINIDAE)
- Iraquirissoa, syn of: Subgenus Iravadia (Pseudonoba) O. Böttger, 1902 (IRAVADIIDAE)
- iratiana, Pupilla iratiana D. Dupuy, 1850 † - (PUPILLIDAE) (FOSSIL)
- iratianum, Pisidium iratianum D. Dupuy, 1849 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- iratii, Mesarion iratii C. Garrido, J. Castillejo & J. Iglesias, 1995 - (ARIONIDAE)
- iratyensis, Obscurella iratyensis L. de Folin & F. Bèrillon, 1877 - syn of: Cochlostoma obscurum (J.P.R. Draparnaud, 1801) - (COCHLOSTOMATIDAE)
- Iravadia, Genus Iravadia W.T. Blanford, 1867 (IRAVADIIDAE)
- iravadica, Kelletia iravadica E.W. Vredenburg, 1921 † - (BUCCINIDAE) (FOSSIL)
- iravadica, Surcula iravadica E.W. Vredenburg, 1921 † - (CLAVATULIDAE) (FOSSIL)
- iravadica, Corbicula iravadica W.T. Blanford, 1880 - (CYRENIDAE)
- iravadica, Cancilla iravadica E.W. Vredenburg, 1923 - syn of: Cancilla isabella morchii A. Adams, 1855 - (MITRIDAE)
- iravadica, Brotia iravadica (W.T. Blanford, 1869) - (PACHYCHILIDAE)
- iravadica, Crassispira iravadica E.W. Vredenburg, 1921 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- iravadica, Hastula iravadica E.W. Vredenburg, 1921 † - (TEREBRIDAE) (FOSSIL)
- iravadicus, Latirus iravadicus E.W. Vredenburg, 1923 † - (FASCIOLARIIDAE) (FOSSIL)
- iravadicus, Hexaplex iravadicus E.W. Vredenburg, 1921 - (MURICIDAE)
- iravadicus yenanensis, Hexaplex iravadicus yenanensis E.W. Vredenburg, 1921 - (MURICIDAE)
- IRAVADIIDAE Thiele, 1928 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- iravadioides, Microdryas iravadioides (J.H. Gatliff & C.J. Gabriel, 1913) - (ANABATHRIDAE)
- iravadoides, Microdryas iravadoides J.H. Gatliff & C.J. Gabriel, 1913 - syn of: Microdryas iravadioides (J.H. Gatliff & C.J. Gabriel, 1913) - (ANABATHRIDAE)
- Irawadia, syn of: Genus Iravadia W.T. Blanford, 1867 (IRAVADIIDAE)
- irazu, Latirus irazu A.A. Olsson, 1922 † - (FASCIOLARIIDAE) (FOSSIL)
- irazuensis, Mesembrinus irazuensis G.F. Angas, 1878 - (BULIMULIDAE)
- Irdanites, Genus Irdanites Klug , 2001 † (TEICHERTICERATIDAE) (FOSSIL)
- Iredalea, Genus Iredalea W.R.B. Oliver, 1915 (DRILLIIDAE)
- iredaleana, Retusa iredaleana (C. Hedley, 1915) - (RETUSIDAE)
- iredalei, Tornatellinops iredalei (H.A. Pilsbry & C.M. Cooke, 1915) - (ACHATINELLIDAE)
- iredalei, Achatina iredalei H.B. Preston, 1910 - (ACHATINIDAE)
- iredalei, Gabbia iredalei B.C. Cotton, 1942 - (BITHYNIIDAE)
- iredalei, Eucominia iredalei H.J. Finlay, 1928 - syn of: Cominella nassoides iredalei (H.J. Finlay, 1928) - (BUCCINIDAE)
- iredalei, Cominella nassoides iredalei (H.J. Finlay, 1928) - (BUCCINIDAE)
- iredalei, Semicassis labiata iredalei F.M. Bayer, 1935 - (CASSIDAE)
- iredalei, Seila iredalei (C.F. Laseron, 1956) - (CERITHIOPSIDAE)
- iredalei, Trachycystis iredalei H.B. Preston, 1912 - (CHAROPIDAE)
- iredalei, Kaliella iredalei H.B. Preston, 1912 - (CHRONIDAE)
- iredalei, Corbula tunicata iredalei B.C. Cotton, 1930 - (CORBULIDAE)
- iredalei, Vexillum iredalei (A.W.B. Powell, 1958) - (COSTELLARIIDAE)
- iredalei, Salaputium iredalei (A.W.B. Powell, 1958) - (CRASSATELLIDAE)
- iredalei, Talabrica iredalei A.W.B. Powell, 1958 - syn of: Salaputium iredalei (A.W.B. Powell, 1958) - (CRASSATELLIDAE)
- iredalei, Cryptoplax iredalei E.A. Ashby, 1923 - (CRYPTOPLACIDAE)
- iredalei, Ransoniella iredalei F.A. Schilder & M. Schilder, 1938 - syn of: Notadusta punctata (C. Linnaeus, 1771) - (CYPRAEIDAE)
- iredalei, Platydoris iredalei J.K. Allan, 1932 - syn of: Platydoris scabra (G.L.C.F.D. Cuvier, 1804) - (DISCODORIDIDAE)
- iredalei, Eatoniella iredalei (W.R.B. Oliver, 1915) - (EATONIELLIDAE)
- iredalei, Elachisina iredalei (J. Brookes, 1926) - (ELACHISINIDAE)
- iredalei, Afroconulus iredalei (H.B. Preston, 1912) - (EUCONULIDAE)
- iredalei, Melanella iredalei C.F. Laseron, 1955 - syn of: Melanella acicula (A.A. Gould, 1849) - (EULIMIDAE)
- iredalei, Eulima iredalei C.F. Laseron, 1955 - syn of: Melanella acicula (A.A. Gould, 1849) - (EULIMIDAE)
- iredalei, Limatula iredalei (C.A. Fleming, 1978) - (LIMIDAE)
- iredalei, Favartia iredalei W.F. Ponder, 1972 - (MURICIDAE)
- iredalei, Pterynotus iredalei C.A. Fleming, 1962 - syn of: Ponderia canalifera (G.B. II Sowerby, 1841) - (MURICIDAE)
- iredalei, Myadora iredalei B.C. Cotton, 1931 - syn of: Myadora albida J.E. Tenison-Woods, 1876 - (MYOCHAMIDAE)
- iredalei, Orbitestella iredalei W.L. May, 1919 - (ORBITESTELLIDAE)
- iredalei, Ostrea iredalei L.A. Faustino, 1932 - syn of: Crassostrea bilineata (P.F. Röding, 1798) - (OSTREIDAE)
- iredalei, Annachlamys iredalei A.W.B. Powell, 1958 - (PECTINIDAE)
- iredalei, Mareleptopoma iredalei (A.R.J.B. Bavay, 1921) - (PICKWORTHIIDAE)
- iredalei, Turbonilla iredalei (C.F. Laseron, 1959) - (PYRAMIDELLIDAE)
- iredalei, Ranularia dunkeri iredalei (C.E. Lischke, 1868) - (RANELLIDAE)
- iredalei, Onoba iredalei (A.W.B. Powell, 1937) - (RISSOIDAE)
- iredalei, Rissoina iredalei C.F. Laseron, 1950 - (RISSOINIDAE)
- iredalei, Aequispirella iredalei (Finlay, 1924 †) - (SEGUENZIOIDEA (UNASSIGNED)) (FOSSIL)
- iredalei, Parisanda iredalei C.F. Laseron, 1954 - (SKENEIDAE)
- iredalei, Sphaerium iredalei H.B. Preston, 1912 - syn of: Sphaerium nyanzae (E.A. Smith, 1892) - (SPHAERIIDAE)
- iredalei, Spondylus iredalei H.C. Fulton, 1915 - syn of: Spondylus raoulensis P.G. Oliver, 1915 - (SPONDYLIDAE)
- iredalei, Euprotomus iredalei (R.T. Abbott, 1960) - (STROMBIDAE)
- iredalei, Pseudopeas iredalei M. Connolly, 1923 - (SUBULINIDAE)
- iredalei, Viriola iredalei (C.F. Laseron, 1958) - (TRIPHORIDAE)
- iredalei, Gazameda iredalei Finlay, 1927 - (TURRITELLIDAE)
- Iredaleoconcha, Subgenus Microcystis (Iredaleoconcha) H.B. Preston, 1913 (EUCONULIDAE)
- iredalia, Thaumatodon iredalia W.H. Webster, 1908 - syn of: Fectola varicosa (L. Pfeiffer, 1853) - (ENDODONTIDAE)
- Iredalina, Genus Iredalina H.J. Finlay, 1926 (VOLUTIDAE)
- Iredalula, Genus Iredalula H.J. Finlay, 1926 (COLUBRARIIDAE)
- irelandi, Glossus irelandi L.W. Stephenson, 1941 † - (GLOSSIDAE) (FOSSIL)
- irellii, Melanopsis irellii P.M. Pallary, 1920 - (MELANOPSIDAE)
- irena, Chemnitzia irena K.H.J. Thiele, 1925 - (PYRAMIDELLIDAE)
- irenae, Zilcheuchilus irenae W.R. Schlickum, 1961 † - syn of: Choerina irenae (W.R. Schlickum, 1961 † †) - (BITHYNIIDAE) (FOSSIL)
- irenae, Euchilus irenae W.R. Schlickum, 1961 † - syn of: Choerina irenae (W.R. Schlickum, 1961 † †) - (BITHYNIIDAE) (FOSSIL)
- irenae, Nematurella irenae W.R. Schlickum, 1964 † - (HYDROBIIDAE) (FOSSIL)
- irenae, Choerina irenae (W.R. Schlickum, 1961 † †) - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- ireneae, Anteaeolidiella ireneae L. Carmona, V. Bhave, R. Salunkhe & al., 2014 - (AEOLIDIIDAE)
- ireneae, Bostryx ireneae J.F. Araya, 2015 - (BULIMULIDAE)
- ireneae, Volvarina ireneae J. Espinosa & J.A. Ortea, 2015 - (MARGINELLIDAE)
- ireneana, Asoella ireneana McRoberts, 2011 † - (HETEROPECTINIDAE) (FOSSIL)
- ireneanus, Discostyrites ireneanus (McLearn, 1940 †) - (TROPICELTITIDAE) (FOSSIL)
- Ireneia, Genus Ireneia A. W. Janssen, 1995 † (CUVIERINIDAE) (FOSSIL)
- Irenella, Subgenus Orpiella (Irenella) G.P.L.K. Gude, 1913 (HELICARIONIDAE)
- irenense, Entolium irenense McLearn, 1933 † - (ENTOLIIDAE) (FOSSIL)
- irenense, Subarctoplites irenense (McLearn, 1945 †) - (HOPLITIDAE) (FOSSIL)
- irenjensis, Unio irenjensis W. Kobelt, 1912 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- Irenosyrinx, syn of: Genus Aforia W.H. Dall, 1889 (COCHLESPIRIDAE)
- irescens, Purpuradusta irescens G.B. Sowerby, 1870 - syn of: Purpuradusta gracilis macula (G.F. Angas, 1867) - (CYPRAEIDAE)
- irgizlaicus, Unio irgizlaicus W.A. Lindholm, 1904 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- iriana, Pyrostoma attenuata iriana (C. Pollonera, 1885) - (CLAUSILIIDAE)
- irianense, Menuthiocrioceras irianense (Skwarko & Thieuloy, 1989 †) - (CRIOCERATITIDAE) (FOSSIL)
- Irianoceras, Genus Irianoceras T. Kobayashi & D.W. Burton, 1971 † (ELLESMEROCERIDA (UNASSIGNED)) (FOSSIL)
- iricolor, Peristernia iricolor (J.B. Hombron & C.H. Jacquinot, 1848) - (FASCIOLARIIDAE)
- iricolor, Janthina iricolor L.A. Reeve, 1858 - syn of: Janthina globosa W.J. Swainson, 1822 - (JANTHINIDAE)
- iricolor, Turbinella iricolor J.B. Hombron & C.H. Jacquinot, 1848 - syn of: Peristernia iricolor (J.B. Hombron & C.H. Jacquinot, 1848) - (TURBINELLIDAE)
- Iridea, syn of: Genus Diplodon J.E. Gray, 1866 (HYRIIDAE)
- iridea, Solariella iridea W.H. Dall, 1889 - syn of: Suavotrochus lubricus (W.H. Dall, 1881) - (SOLARIELLIDAE)
- iridella, Cuspidaria iridella J.T. Kuroda, 1948 - syn of: Pseudoneaera semipellucida (J.T. Kuroda, 1948) - (CUSPIDARIIDAE)
- Iridella, syn of: Genus Diplodon J.E. Gray, 1866 (HYRIIDAE)
- Iridella, syn of: Genus Iridina Lamarck, 1819 (IRIDINIDAE)
- iridella, Tellina iridella E.C. Von Martens, 1865 - (TELLINIDAE)
- iridella, Friersonia iridella (H.A. Pilsbry & L.S. Frierson, 1907) - (UNIONIDAE)
- iridescens, Calliostoma iridescens G.B. III Sowerby, 1903 - (CALLIOSTOMATIDAE)
- iridescens, Neaera iridescens R.B. Hinds, 1843 - syn of: Theora iridescens (R.B. Hinds, 1843) - (CUSPIDARIIDAE)
- iridescens, Cyamium iridescens J.E. Cooper & H.B. Preston, 1910 - syn of: Cyamium falklandicum J.C. Melvill & R. Standen, 1898 - (CYAMIIDAE)
- iridescens, Cyathopoma iridescens K.C. Emberton, 2010 - (CYCLOPHORIDAE)
- iridescens, Amphorella iridescens T.V. Wollaston, 1878 - (FERUSSACIIDAE)
- iridescens, Mactra iridescens J.T. Kuroda & T. Habe in T. Habe, 1958 - (MACTRIDAE)
- iridescens, Mitromorpha iridescens R.N. Kilburn, 1986 - (MITROMORPHIDAE)
- iridescens, Nuculoma iridescens T. Habe & K. Sakurai, 1965 - (NUCULIDAE)
- iridescens, Ostrea iridescens Gray, 1854 - (OSTREIDAE)
- iridescens, Ostrea iridescens S.C.T. Hanley, 1854 - syn of: Striostrea prismatica (Gray, 1825) - (OSTREIDAE)
- iridescens, Gleviceras iridescens Tutcher & Trueman, 1925 † - (OXYNOTICERATIDAE) (FOSSIL)
- iridescens, Paramelania iridescens J.E.S. Moore, 1898 - (PALUDOMIDAE)
- iridescens, Pteria avicula iridescens L.A. Reeve, 1857 - (PTERIIDAE)
- iridescens, Theora iridescens (R.B. Hinds, 1843) - (SEMELIDAE)
- iridescens, Archiminolia iridescens (T. Habe, 1961) - (SOLARIELLIDAE)
- iridescens, Microgaza iridescens T. Habe, 1961 - syn of: Archiminolia iridescens (T. Habe, 1961) - (SOLARIELLIDAE)
- iridescens, Solariella iridescens T. Habe, 1968 - syn of: Archiminolia iridescens (T. Habe, 1961) - (SOLARIELLIDAE)
- iridescens, Pseudosubulina iridescens H.F. Ramsden & C. de la Torre - (SPIRAXIDAE)
- iridescens, Iridona iridescens (W.H. Benson, 1842) - (TELLINIDAE)
- iridescens, Broderipia iridescens (W.J. Broderip, 1834) - (TROCHIDAE)
- iridescens, Lirularia iridescens (L. von Schrenck, 1863) - (TROCHIDAE)
- iridescens, Trochus iridescens L. von Schrenck, 1863 - syn of: Lirularia iridescens (L. von Schrenck, 1863) - (TROCHIDAE)
- iridescens, Venerupis iridescens R. Tate, 1889 - syn of: Irus interstriatus (G.B. II Sowerby, 1854) - (VENERIDAE)
- iridesens, Paramelania iridesens (J.E.S. Moore, 1898) - (PALUDOMIDAE)
- irideum, Tornoceras irideum Frech, 1902 † - syn of: Pinacites irideus Frech, 1902 † - (TORNOCERATIDAE) (FOSSIL)
- irideum, Epitornoceras irideum Frech, 1902 † - syn of: Pinacites irideus Frech, 1902 † - (TORNOCERATIDAE) (FOSSIL)
- irideus, Pinacites irideus Frech, 1902 † - (PINACITIDAE) (FOSSIL)
- iridifulgens, Ethminolia iridifulgens (J.C. Melvill, 1910) - (TROCHIDAE)
- Iridina, Genus Iridina Lamarck, 1819 (IRIDINIDAE)
- iridinea, Solenaia iridinea (P.M. Heude, 1874) - (UNIONIDAE)
- iridineus, Mycetopus iridineus P.M. Heude, 1874 - syn of: Solenaia iridinea (P.M. Heude, 1874) - (MYCETOPODIDAE)
- IRIDINIDAE Swainson, 1840 - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-UNIONIDA [Order]-ETHERIOIDEA [Superfamily])
- iridis, Haliotis iridis J.F. Gmelin, 1791 - syn of: Haliotis iris J.F. Gmelin, 1791 - (HALIOTIDAE)
- iridis, Helicarion iridis I. Hyman, 2007 - (HELICARIONIDAE)
- iridisa, Granulina iridisa T. McCleery, 2010 - (MARGINELLIDAE)
- iridium, Calliostoma iridium W.H. Dall, 1896 - (CALLIOSTOMATIDAE)
- Iridona, Genus Iridona M. Huber, Langleit & Kreipl, 2015 (TELLINIDAE)
- iridophora, Costasiella iridophora M. Ichikawa, 1993 - (COSTASIELLIDAE)
- Iridoteuthis, Genus Iridoteuthis A. Naef, 1912 (SEPIOLIDAE)
- irikovi, Alinda biplicata irikovi H. Nordsieck, 2008 - (CLAUSILIIDAE)
- irina, Pseudozonaria irina L.C. Kiener, 1843 - syn of: Pseudozonaria nigropunctata (Gray, 1828) - (CYPRAEIDAE)
- irinae, Plesiocystiscus irinae L. Bozzetti, P.M.S. Costa & T. Cossignani, 2010 - (CYSTISCIDAE)
- irinae, Artinskia irinae Ruzhentsev, 1938 † - (MEDLICOTTIIDAE) (FOSSIL)
- irindaense, Pseudancylastrum irindaense Y.I. Starobogatov, 1989 - (ACROLOXIDAE)
- irinimeke, Fluviopupa irinimeke M. Haase, W.F. Ponder & P. Bouchet, 2006 - (HYDROBIIDAE)
- Irinites, Genus Irinites Zhuravleva, 1972 † (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- Irinoceras, Genus Irinoceras Ruzhencev , 1947 † (PRIONOCERATIDAE) (FOSSIL)
- irioides, Barbatia irioides K.T. Menke, 1843 - syn of: Acar plicata (L.W. Dillwyn, 1817) - (ARCIDAE)
- iriomotense, Phyllodesmium iriomotense K. Baba, 1991 - (FACELINIDAE)
- iriomotensis, Euphaedusa stearnsii iriomotensis J.T. Kuroda, 1960 - (CLAUSILIIDAE)
- iriomotensis, Clenchiella iriomotensis W.F. Ponder, H. Fukuda & A. Hallan, 2014 - (CLENCHIELLIDAE)
- iriomotensis, Cuna iriomotensis T. Habe, 1992 - (CONDYLOCARDIIDAE)
- iris, Buccinum iris J. Lightfoot, 1786 - syn of: Turrilatirus iris (J. Lightfoot, 1786) - (BUCCINIDAE)
- iris, Calliostoma iris (J.T. Kuroda & T. Habe, 1961) - (CALLIOSTOMATIDAE)
- iris, Falsimargarita iris (E.A. Smith, 1915) - (CALLIOSTOMATIDAE)
- iris, Frigidocardium iris M. Huber & J.J. Ter Poorten, 2007 - (CARDIIDAE)
- iris, Hypselodoris iris (C. Collingwood, 1881) - (CHROMODORIDIDAE)
- iris, Opisthoporus iris (H.H. Godwin-Austen, 1889) - (CYCLOPHORIDAE)
- iris, Dendronotus iris J.G. Cooper, 1863 - (DENDRONOTIDAE)
- iris, Engonoceras iris Spath, 1924 † - (ENGONOCERATIDAE) (FOSSIL)
- iris, Turrilatirus iris (J. Lightfoot, 1786) - (FASCIOLARIIDAE)
- iris, Latirus iris J. Lightfoot, 1786 - syn of: Turrilatirus iris (J. Lightfoot, 1786) - (FASCIOLARIIDAE)
- iris, Cuthona iris M. Edmunds & H. Just, 1983 - (FIONIDAE)
- iris, Goniatites iris Klipstein, 1843 † - (GONIATITIDAE) (FOSSIL)
- iris, Haliotis iris J.F. Gmelin, 1791 - (HALIOTIDAE)
- iris, Mutela iris H.A. Pilsbry & J.C. Bequaert, 1927 - syn of: Mutela mabilli (A. de Rochebrune, 1886) - (IRIDINIDAE)
- iris, Nassarius iris E.C. Von Martens, 1880 - syn of: Nassarius irus (E.C. Von Martens, 1880) - (NASSARIIDAE)
- iris, Neritina iris A. Mousson, 1848 † - syn of: Nereina woodwardi R.J.L. Guppy, 1866 † - (NERITIDAE) (FOSSIL)
- iris, Porphyrobaphe iris (L. Pfeiffer, 1852) - (ORTHALICIDAE)
- iris, Philine iris L.P. Tringali, 2001 - (PHILINIDAE)
- iris, Discoscaphites iris (T.A. Conrad, 1858 †) - (SCAPHITIDAE) (FOSSIL)
- iris, Iridoteuthis iris (S.S. Berry, 1909) - (SEPIOLIDAE)
- iris, Solariella iris (W.H. Dall, 1881) - (SOLARIELLIDAE)
- iris, Tellina iris (T. Say, 1822) - (TELLINIDAE)
- iris, Heteromacoma iris (S.C.T. Hanley, 1845 †) - (TELLINIDAE) (FOSSIL)
- iris, Scissula iris T. Say, 1822 - syn of: Tellina iris (T. Say, 1822) - (TELLINIDAE)
- iris, Mastonia iris C.F. Laseron, 1958 - (TRIPHORIDAE)
- iris, Priotrochus iris D.G. Herbert, 1988 - (TROCHIDAE)
- iris, Cantharidus iris P.D. Montfort, 1810 - syn of: Cantharidus opalus (T. Martyn, 1784) - (TROCHIDAE)
- iris, Trochus iris J.F. Gmelin, 1791 - syn of: Cantharidus opalus (T. Martyn, 1784) - (TROCHIDAE)
- iris, Gemmula iris E.W. Vredenburg, 1921 † - (TURRIDAE) (FOSSIL)
- iris, Villosa iris (I. Lea, 1829) - (UNIONIDAE)
- iris, Scissileda iris R.N. Kilburn, 1994 - (YOLDIIDAE)
- iris, Yoldia iris A.E. Verrill & K.J. Bush, 1898 - syn of: Yoldiella lucida (S.L. Lovén, 1846) - (YOLDIIDAE)
- iris stricta, Yoldiella iris stricta A.E. Verrill & K.J. Bush, 1898 - syn of: Yoldiella lucida (S.L. Lovén, 1846) - (YOLDIIDAE)
- irisae, Volvarina irisae J. Espinosa & J.A. Ortea, 2015 - (MARGINELLIDAE)
- irisae, Swainsonia newcombii irisae R. Le Béon, 2014 - (MITRIDAE)
- irisans, Calliostoma irisans H. Strebel, 1905 - (CALLIOSTOMATIDAE)
- irisans, Anodontites irisans W.B. Marshall, 1927 - syn of: Anodontites leotaudi (R.J.L. Guppy, 1864) - (MYCETOPODIDAE)
- irisans, Perna irisans F.P. Jousseaume, 1888 - syn of: Perna perna (C. Linnaeus, 1758) - (MYTILIDAE)
- irisans, Oliva irisans J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- irisans, Anodon irisans J.G. Anthony, 1865 - syn of: Pyganodon fragilis (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- irisans albescens, Oliva irisans albescens C.W. Johnson, 1915 - (OLIVIDAE)
- irisans chrysoides, Oliva irisans chrysoides P. Dautzenberg, 1927 - (OLIVIDAE)
- irisans concinna, Oliva irisans concinna F.P. Marrat, 1871 - (OLIVIDAE)
- irisans cryptospira, Oliva irisans cryptospira J. Ford, 1891 - (OLIVIDAE)
- irisans fordii, Oliva irisans fordii C.W. Johnson, 1910 - (OLIVIDAE)
- irisans fumosa, Oliva irisans fumosa F.P. Marrat, 1871 - (OLIVIDAE)
- irisans kremerorum, Oliva irisans kremerorum E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- irisans oldi, Oliva irisans oldi R.F. Zeigler, 1969 - (OLIVIDAE)
- irisans ornata, Oliva irisans ornata F.P. Marrat, 1867 - syn of: Oliva ornata F.P. Marrat, 1867 - (OLIVIDAE)
- irisata, Stomatia irisata H. Dufo, 1840 - (TROCHIDAE)
- irisodontes, Phasianotrochus irisodontes (J.R.C. Quoy & J.P. Gaimard, 1834) - (TROCHIDAE)
- irius, Gravesia irius (A.V.M.D. D'Orbigny, 1850 †) - (AULACOSTEPHANIDAE) (FOSSIL)
- irizari, Mactra irizari R.O. Wilckens, 1912 † - (MACTRIDAE) (FOSSIL)
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