- intacta, Microsurcula intacta (T.L. Casey, 1903 †) - (COCHLESPIRIDAE) (FOSSIL)
- intacta, Nassaria intacta K. Fraussen, 2006 - (NASSARIIDAE)
- intactus, Antillophos intactus K. Fraussen & G.T. Poppe, 2005 - (NASSARIIDAE)
- intalpina, Leptoconchus intalpina E. Gittenberger & A. Gittenberger, 2011 - (MURICIDAE)
- intaminata, Mangelia intaminata A.A. Gould, 1860 - syn of: Pseudodaphnella intaminata (A.A. Gould, 1860) - (MANGELIIDAE)
- intaminata, Pseudodaphnella intaminata (A.A. Gould, 1860) - (RAPHITOMIDAE)
- intaminatum, Bittium intaminatum M. Yokoyama, 1931 † - (CERITHIIDAE) (FOSSIL)
- intapurpurea, Puberella intapurpurea (T.A. Conrad, 1849) - (VENERIDAE)
- intastrata, Plectodon intastrata (T.A. Conrad, 1848 †) - (CUSPIDARIIDAE) (FOSSIL)
- intastriata, Plectodon intastriata (T.A. Conrad, 1848 †) - (CUSPIDARIIDAE) (FOSSIL)
- intastriata, Nassa intastriata T.A. Conrad, 1855 - syn of: Nassarius perpinguis (R.B. Hinds, 1844) - (NASSARIIDAE)
- intastriata, Psammotreta intastriata (T. Say, 1826) - (TELLINIDAE)
- intastriata, Tellina intastriata T. Say, 1826 - syn of: Psammotreta intastriata (T. Say, 1826) - (TELLINIDAE)
- intecta, Atagema intecta (E.F. Kelaart, 1858) - (DISCODORIDIDAE)
- intecta, Electroma intecta Finlay & J. Marwick, 1937 † - (PTERIIDAE) (FOSSIL)
- integella, Attenuata integella (C. Hedley, 1904) - (RISSOIDAE)
- integer, Heligmus integer J.H.F. Douvillé, 1916 † - (ELIGMIDAE) (FOSSIL)
- integer, Somatogyrus integer (T. Say, 1829) - (LITHOGLYPHIDAE)
- integer, Thaumastus integer (L. Pfeiffer, 1855) - (MEGASPIRIDAE)
- integer, Tricornis integer W.J. Swainson, 1823 - syn of: Lobatus costatus (J.F. Gmelin, 1791) - (STROMBIDAE)
- integer, Strombus integer W.J. Swainson, 1823 - syn of: Lobatus costatus (J.F. Gmelin, 1791) - (STROMBIDAE)
- integra, Amnicola integra T. Say, 1821 - syn of: Cincinnatia integra (T. Say, 1821) - (AMNICOLIDAE)
- integra, Bucania integra L. Waagen, 1880 † - syn of: Retispira integra (L. Waagen, 1880 †) - (BUCANIIDAE) (FOSSIL)
- integra, Turquetia integra C. Hedley, 1907 - syn of: Benthoquetia integra (C. Hedley, 1907) - (GALEOMMATIDAE)
- integra, Cincinnatia integra (T. Say, 1821) - (HYDROBIIDAE)
- integra, Retispira integra (L. Waagen, 1880 †) - (KNIGHTITIDAE) (FOSSIL)
- integra, Plaxiphora integra (Is. Taki, 1953) - (MOPALIIDAE)
- integra, Bulliopsis integra (T.A. Conrad, 1842 †) - (NASSARIIDAE) (FOSSIL)
- integra, Bulliopsis integra F.B. Meek, 1864 † - (NASSARIIDAE) (FOSSIL)
- integra, Haitia integra (S.S. Haldeman, 1841) - (PHYSIDAE)
- integra, Solaropsis pellisserpentis integra (H. Drouët, 1859) - (PLEURODONTIDAE)
- integra, Blanfordia integra H.A. Pilsbry, 1924 - (POMATIOPSIDAE)
- integra, Crassispira integra (K.H.J. Thiele, 1925) - (PSEUDOMELATOMIDAE)
- integra, Turbonilla integra (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- integra, Varicospira integra (A. von Koenen, 1889 †) - (ROSTELLARIIDAE) (FOSSIL)
- integra, Benthoquetia integra (C. Hedley, 1907) - (SPORTELLIDAE)
- integra, Opimaphora integra C.F. Laseron, 1958 - (TRIPHORIDAE)
- integra, Turris integra K.H.J. Thiele, 1925 - syn of: Crassispira integra (K.H.J. Thiele, 1925) - (TURRIDAE)
- integra, Organocoptis integra (L. Pfeiffer, 1856) - (UROCOPTIDAE)
- integra, Paludina integra T. Say, 1821 - syn of: Cincinnatia integra (T. Say, 1821) - (VIVIPARIDAE)
- integra apenninensis, Rimella integra apenninensis F. Sacco, 1893 † - syn of: Rimella appeninensis (F. Sacco, 1893 †) - (RIMELLIDAE) (FOSSIL)
- integra brevispira, Haitia integra brevispira (I. Lea, 1864) - (PHYSIDAE)
- integra signae, Organocoptis integra signae C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- integra silvicola, Organocoptis integra silvicola C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- integra walkeri, Haitia integra walkeri (O.A. Crandall, 1901) - (PHYSIDAE)
- Integricardium, Genus Integricardium Rollier , 1912 † (CARDIIDAE) (FOSSIL)
- integricostatum, Androgynoceras integricostatum (C.T. Simpson, 1855 †) - (LIPAROCERATIDAE) (FOSSIL)
- Intejoceras, Genus Intejoceras Balashov, 1960 † (INTEJOCERATIDAE) (FOSSIL)
- INTEJOCERATIDAE Balashov, 1960 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-INTEJOCERIDA [Order]) (FOSSIL)
- INTEJOCERIDA (UNASSIGNED) † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-INTEJOCERIDA [Order]) (FOSSIL)
- Intelcystiscus, Genus Intelcystiscus J.A. Ortea & J. Espinosa, 2001 (CYSTISCIDAE)
- intemerata, Anodonta intemerata P.M. Heude, 1885 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- intemeratus, Polinices intemeratus R.A. Philippi, 1851 - (NATICIDAE)
- intemnuscyra, Terebra intemnuscyra S.F.B. de Lima, D. de Oliveira Tenório & J.C.N. Barros, 2007 - syn of: Terebra intumescyra S.F.B. de Lima, D. de Oliveira Tenório & J.C.N. Barros, 2007 - (TEREBRIDAE)
- intensa, Sinployea intensa (T. Iredale, 1941) - (CHAROPIDAE)
- intensior, Ampelita calypso intensior H.A. Pilsbry - (ACAVIDAE)
- intensior, Cochlorina aurisleporis intensior H.A. Pilsbry, 1898 - (BULIMULIDAE)
- intentata, Strophiops intentata C.J. Maynard & W.F. Clapp, 1920 - (CERIONIDAE)
- interamnensis, Cernuella interamnensis W. Kobelt, 1907 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- intercalare, Placenticeras intercalare (F.B. Meek, 1876 †) - (PLACENTICERATIDAE) (FOSSIL)
- intercalaria, Strophiops intercalaria C.J. Maynard & W.F. Clapp, 1921 - (CERIONIDAE)
- Intercalaria, syn of: Genus Parayoldiella Z.A. Filatova, 1971 (NUCULANIDAE)
- intercalaris, Cerithiopsis intercalaris P.P. Carpenter, 1865 - syn of: Eumetula intercalaris (P.P. Carpenter, 1865) - (CERITHIOPSIDAE)
- intercalaris, Clathurella intercalaris (P.P. Carpenter, 1856) - (CLATHURELLIDAE)
- intercalaris, Boesites intercalaris Ruzhentsev, 1978 † - (DARAELITIDAE) (FOSSIL)
- intercalaris, Eumetula intercalaris (P.P. Carpenter, 1865) - (NEWTONIELLIDAE)
- intercalaris, Strobeus intercalaris (F.B. Meek & A.H. Worthen, 1860 †) - (SOLENISCIDAE) (FOSSIL)
- intercalaris, Sphaerodoma intercalaris F.B. Meek & A.H. Worthen, 1860 † - syn of: Strobeus intercalaris (F.B. Meek & A.H. Worthen, 1860 †) - (SPHAERODOMIDAE) (FOSSIL)
- intercalaris, Inella intercalaris B.A. Marshall, 1983 - (TRIPHORIDAE)
- intercalaris, Viriola intercalaris (A.A. Gould, 1861) - (TRIPHORIDAE)
- intercalaris, Meretrix intercalaris A.E.M. Cossmann & M.A. Peyrot, 1910 † - (VENERIDAE) (FOSSIL)
- intercalata, Martesia intercalata P.P. Carpenter, 1857 - syn of: Diplothyra curta (G.B. I Sowerby, 1834) - (PHOLADIDAE)
- intercalatum, Dentalium intercalatum B. Wade, 1926 † - (DENTALIIDAE) (FOSSIL)
- intercalatum, Paradentalium intercalatum (A.A. Gould, 1859) - (DENTALIIDAE)
- intercalcaris, Viriola intercalcaris A.A. Gould, 1861 - syn of: Viriola intercalaris (A.A. Gould, 1861) - (TRIPHORIDAE)
- intercancellata, Turris intercancellata R.N. Kilburn, A.E. Fedosov & B.M. Olivera, 2012 - (TURRIDAE)
- intercedens, Semicassis intercedens E.C. Von Martens, 1903 - syn of: Semicassis labiata zeylanica (J.B.P.A. Lamarck, 1822) - (CASSIDAE)
- intercedens, Alopia glorifica intercedens A. Schmidt, 1857 - (CLAUSILIIDAE)
- intercedens, Caucasotachea intercedens (O. von Retowski, 1889) - (HELICIDAE)
- intercedens, Megalobulimus intercedens (E.C. Von Martens, 1876) - (MEGALOBULIMIDAE)
- intercedens, Murchisonia intercedens J.W. Hall, 1879 † - (MURCHISONIIDAE) (FOSSIL)
- intercedens, Daphnella intercedens (J.C. Melvill, 1923) - (RAPHITOMIDAE)
- intercedens, Unio intercedens I. Lea, 1857 - syn of: Villosa lienosa (T.A. Conrad, 1834) - (UNIONIDAE)
- intercingulata, Eunema intercingulata Seguenza, 1885 † - syn of: Eucyclus alpina F. Stoliczka, 1861 † - (LOPHOSPIRIDAE) (FOSSIL)
- intercisa, Xerarionta intercisa (W.G. Binney, 1857) - (CEPOLIDAE)
- intercisa, Micrarionta intercisa W.G. Binney, 1857 - syn of: Xerarionta intercisa (W.G. Binney, 1857) - (HELMINTHOGLYPTIDAE)
- intercisa, Lymnaea intercisa (W.A. Lindholm, 1909) - (LYMNAEIDAE)
- intercisa, Annularisca intercisa C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- intercissus, Peltoceratoides intercissus Uhlig, 1881 † - (ASPIDOCERATIDAE) (FOSSIL)
- intercisum, Gennaeosinum intercisum (T. Iredale, 1931) - (NATICIDAE)
- intercisum, Eunaticina intercisum T. Iredale, 1931 - syn of: Gennaeosinum intercisum (T. Iredale, 1931) - (NATICIDAE)
- intercisus, Pericyclus intercisus D. Korn & al., 2010 † - (PERICYCLIDAE) (FOSSIL)
- interconvexa, Eulimella interconvexa A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- intercosta, Pseudacesta intercosta Yin & Yin in Yang & al. 1983 † - (LIMIDAE) (FOSSIL)
- intercostalis, Ranella intercostalis R. Tate, 1888 † - (RANELLIDAE) (FOSSIL)
- intercostalis, Turbo intercostalis K.T. Menke, 1846 - (TURBINIDAE)
- intercostalium, Marmorostoma intercostalium K.T. Menke, 1829 - syn of: Turbo intercostalis K.T. Menke, 1846 - (TURBINIDAE)
- intercostata, Entalinopsis intercostata (M. Boissevain, 1906) - (ENTALINIDAE)
- intercostata, Glycymeris intercostata W.M. Gabb, 1860 † - (GLYCYMERIDIDAE) (FOSSIL)
- intercostata, Gonatorhaphe intercostata (A. Mousson, 1870) - (NEOCYCLOTIDAE)
- intercostatum, Dentalium intercostatum M. Boissevain, 1906 - syn of: Entalinopsis intercostata (M. Boissevain, 1906) - (DENTALIIDAE)
- intercostatus, Euchondria intercostatus (F. McCoy, 1844 †) - (EUCHONDRIIDAE) (FOSSIL)
- intercostulata, Limatula intercostulata R.N. Kilburn, 1998 - (LIMIDAE)
- intercrenata, Crassatella intercrenata A.E.M. Cossmann, 1905 † - (CRASSATELLIDAE) (FOSSIL)
- interferens, Carychiopsis interferens (Deshayes, 1863) † - (ELLOBIIDAE) (FOSSIL)
- interfilata, Viriola interfilata (A.A. Gould, 1861) - (TRIPHORIDAE)
- interfissa, Acanthochitona interfissa P. Kaas, 1972 - syn of: Choneplax lata (L. Guilding, 1829) - (ACANTHOCHITONIDAE)
- interflucta, Nucula interflucta L.N. Marincovich, 1973 - (NUCULIDAE)
- interfossa, Lirobittium interfossa (P.P. Carpenter, 1864) - (CERITHIIDAE)
- interfossa, Clathromangelia interfossa P.P. Carpenter, 1864 - syn of: Perimangelia interfossa (P.P. Carpenter, 1864) - (CLATHURELLIDAE)
- interfossa, Lepidozona interfossa (S.S. Berry, 1917) - (ISCHNOCHITONIDAE)
- interfossa, Perimangelia interfossa (P.P. Carpenter, 1864) - (MANGELIIDAE)
- interfossa, Ocinebrina interfossa (P.P. Carpenter, 1864) - (MURICIDAE)
- interfossa, Rissoa interfossa P.P. Carpenter, 1864 - syn of: Lirobittium interfossa (P.P. Carpenter, 1864) - (RISSOIDAE)
- interfossa, Rissoina interfossa P.P. Carpenter, 1864 - syn of: Lirobittium interfossa (P.P. Carpenter, 1864) - (RISSOINIDAE)
- interfossa alpha, Ocenebra interfossa alpha W.H. Dall, 1921 - syn of: Ocinebrina interfossa (P.P. Carpenter, 1864) - (MURICIDAE)
- interfossa atropurpurea, Ocinebrina interfossa atropurpurea (P.P. Carpenter, 1865) - (MURICIDAE)
- intergenerica, Syngenoherpia intergenerica L. Salvini-Plawén, 1978 - (SYNGENOHERPIIDAE)
- intergranosa, Viriola intergranosa (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- intergranosa, Triphora intergranosa R.P.J. Hervier, 1898 - syn of: Viriola intergranosa (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- intergranosus, Ischnochiton intergranosus H.A. Pilsbry, 1892 - syn of: Ischnochiton contractus (L.A. Reeve, 1847) - (ISCHNOCHITONIDAE)
- interica, Atlasica interica (P.M. Pallary, 1923) - (HELICIDAE)
- interiecta, Horologica interiecta Cecalupo & Perugia, 2016 - (CERITHIOPSIDAE)
- interior, Elia huebneri interior B. Hausdorf, 1997 - (CLAUSILIIDAE)
- interior, Everettia interior T.S. Liew, M. Schilthuizen & J.J. Vermeulen, 2009 - (DYAKIIDAE)
- interioris, Euhadra scaevola interioris H.A. Pilsbry, 1928 - (BRADYBAENIDAE)
- interioris, Cyclophorus formosaensis interioris H.A. Pilsbry & Y. Hirase, 1908 - (CYCLOPHORIDAE)
- interioris, Juga interioris C. Goodrich, 1944 - (SEMISULCOSPIRIDAE)
- interioris, Bocageia interioris H.A. Pilsbry, 1919 - (SUBULINIDAE)
- interioris, Eremopeas interioris (R. Tate, 1894) - (SUBULINIDAE)
- interioris, Succinea interioris R. Tate, 1894 - (SUCCINEIDAE)
- interita, Chrysallida interita J. van der Linden & J. Eikenboom, 1992 † - (PYRAMIDELLIDAE) (FOSSIL)
- interjecta, Amastra soror interjecta A. Hyatt & H.A. Pilsbry, 1911 - (AMASTRIDAE)
- interjecta, Naninia interjecta T. Iredale, 1941 - (ARIOPHANTIDAE)
- interjecta, Micropontica interjecta (O.W. Von Rosen, 1914) - (CLAUSILIIDAE)
- interjecta, Alopia nefasta interjecta H. Nordsieck, 1984 - (CLAUSILIIDAE)
- interjecta, Philonesia interjecta H.B. Baker, 1940 - (EUCONULIDAE)
- interjecta, Nassa interjecta É.A.A. Locard, 1886 - syn of: Tritia incrassata (H. Strøm, 1768) - (NASSARIIDAE)
- interjecta, Venerupis interjecta G.P. Deshayes, 1853 - syn of: Irus exoticus (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- interjunctus, Penion interjunctus (Finlay, 1930 †) - (BUCCINIDAE) (FOSSIL)
- interlacinia, Tellidorella interlacinia D.T. Dockery, 1982 † - (LUCINIDAE) (FOSSIL)
- interlaevigata, Trigonia interlaevigata F.A. von Quenstedt, 1858 † - (TRIGONIIDAE) (FOSSIL)
- interlaevis, Trigonaphera interlaevis C.F. Laseron, 1955 - syn of: Trigonostoma bicolor (R.B. Hinds, 1843) - (CANCELLARIIDAE)
- interlaevis, Scalptia interlaevis C.F. Laseron, 1955 - syn of: Trigonostoma bicolor (R.B. Hinds, 1843) - (CANCELLARIIDAE)
- interlamellaris, Mesophaedusa interlamellaris (E.C. Von Martens, 1876) - (CLAUSILIIDAE)
- interlamellaris validiuscula, Mesophaedusa interlamellaris validiuscula (E.C. Von Martens, 1876) - (CLAUSILIIDAE)
- interlineata, Annuliconcha interlineata (F.B. Meek & A.H. Worthen, 1860 †) - (ANNULICONCHIDAE) (FOSSIL)
- interlineata, Streptopelma interlineata (R. Tate, 1888 †) - (FASCIOLARIIDAE) (FOSSIL)
- interlineata, Mangelia interlineata W. Kobelt, 1905 - syn of: Mangelia multilineolata (G.P. Deshayes, 1835) - (MANGELIIDAE)
- interlineata, Oxymeris crenulata interlineata (G.P. Deshayes, 1859) - (TEREBRIDAE)
- interlineatus, Bucanopsis interlineatus (Portlock, 1843 †) - (BELLEROPHONTIDAE) (FOSSIL)
- interlineatus, Pecten interlineatus W.M. Gabb, 1873 † - syn of: Insolitotheca communis (Billings, 1872 †) - (PECTINIDAE) (FOSSIL)
- interlirata, Clathromangelia interlirata R.E.C. Stearns, 1872 - syn of: Perimangelia interfossa (P.P. Carpenter, 1864) - (CLATHURELLIDAE)
- interlirata, Ziba interlirata (L.A. Reeve, 1844) - (MITRIDAE)
- interlirata, Nassa interlirata E.A. Smith, 1876 - syn of: Nassarius interliratus (E.A. Smith, 1876) - (NASSARIIDAE)
- interlirata pia, Ziba interlirata pia (W.L.H. Dohrn, 1861) - (MITRIDAE)
- interlirata teschi, Ziba interlirata teschi E.J. Koperberg, 1931 - syn of: Ziba interlirata (L.A. Reeve, 1844) - (MITRIDAE)
- interliratus, Nassarius interliratus (E.A. Smith, 1876) - (NASSARIIDAE)
- interliratus, Petaloconchus interliratus R.E.C. Stearns, 1893 - (VERMETIDAE)
- interlithonis, Ohridotropidina relicta interlithonis S. Hadžišce, 1959 - (VALVATIDAE)
- intermaculata, Splendrillia intermaculata (E.A. Smith, 1879) - (DRILLIIDAE)
- Intermaria, Genus Intermaria Delicado, Pešic & Glöer, 2016 (HYDROBIIDAE)
- intermedia, Acanthochitona intermedia (H.F. Nierstrasz, 1905) - (ACANTHOCHITONIDAE)
- intermedia, Achatinella intermedia W. Newcomb - syn of: Amastra intermedia (W. Newcomb, 1853) - (ACHATINELLIDAE)
- intermedia, Acteocina intermedia G. Willett, 1928 - syn of: Acteocina eximia (W. Baird, 1863) - (ACTEOCINIDAE)
- intermedia, Amastra intermedia (W. Newcomb, 1853) - (AMASTRIDAE)
- intermedia, Ambonychia intermedia F.B. Meek & A.H. Worthen † - (AMBONYCHIIDAE) (FOSSIL)
- intermedia, Ambonychinia intermedia Isberg, 1934 † - (AMBONYCHIIDAE) (FOSSIL)
- intermedia, Byssonychia intermedia F.B. Meek & A.H. Worthen † - syn of: Ambonychia intermedia F.B. Meek & A.H. Worthen † - (AMBONYCHIIDAE) (FOSSIL)
- intermedia, Godlewskia pulchella intermedia (Kozhov, 1936) - (AMNICOLIDAE)
- intermedia, Spengelomenia intermedia L. Salvini-Plawén, 1978 - (AMPHIMENIIDAE)
- intermedia, Ampullaria intermedia J.R.C. Quoy & J.P. Gaimard, 1825 - syn of: Pomacea sordida (W.J. Swainson, 1823) - (AMPULLARIIDAE)
- intermedia, Marisa intermedia J.E. Gray, 1824 - syn of: Marisa cornuarietis (C. Linnaeus, 1758) - (AMPULLARIIDAE)
- intermedia, Crommium intermedia (G.P. Deshayes, 1832 †) - (AMPULLINIDAE) (FOSSIL)
- intermedia, Amorina intermedia J.J. Vermeulen & al., 2012 † - (ANAHAMULINIDAE) (FOSSIL)
- intermedia, Ancilla intermedia (A. von Koenen, 1889 †) - (ANCILLARIIDAE) (FOSSIL)
- intermedia, Ancillaria intermedia Speyer, 1862 † - syn of: Amalda glandiformis anomala (von Schlotheim, 1820 †) - (ANCILLARIIDAE) (FOSSIL)
- intermedia, Aplysia intermedia G.P. Farran, 1905 - (APLYSIIDAE)
- intermedia, Astarte intermedia G.B. II Sowerby, 1854 - syn of: Astarte elliptica (J. Brown, 1827) - (ASTARTIDAE)
- intermedia, Hyrcania intermedia K.E.I. von Eichwald † - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- intermedia, Karaftohelix intermedia (T.S. Rymzhanov, 1983) - (BRADYBAENIDAE)
- intermedia, Helicostyla intermedia O.F. von Möllendorff, 1896 - (BRADYBAENIDAE)
- intermedia, Cominella intermedia (H.H. Suter, 1917 †) - (BUCCINIDAE) (FOSSIL)
- intermedia, Euthria intermedia (O.G. Michelotti, 1847 †) - (BUCCINIDAE) (FOSSIL)
- intermedia, Neptunea despecta intermedia C.W.S. Aurivillius, 1885 † - (BUCCINIDAE) (FOSSIL)
- intermedia, Bythinella intermedia F. Mahler, 1950 - syn of: Bythinella austriaca (G.R. von Frauenfeld, 1856) - (BYTHINELLIDAE)
- intermedia, Rhagada intermedia G.A. Solem, 1997 - (CAMAENIDAE)
- intermedia, Nanotrachia intermedia (G.A. Solem, 1984) - (CAMAENIDAE)
- intermedia, Ordtrachia intermedia G.A. Solem, 1984 - syn of: Nanotrachia intermedia (G.A. Solem, 1984) - (CAMAENIDAE)
- intermedia, Amplirhagada alta intermedia G.A. Solem, 1981 - (CAMAENIDAE)
- intermedia, Cyclocardia intermedia K.H.J. Thiele, 1912 - syn of: Cyclocardia astartoides (E.C. Von Martens, 1878) - (CARDITIDAE)
- intermedia, Cardites intermedia G.B. Brocchi, 1814 - syn of: Cardites antiquatus (C. Linnaeus, 1758) - (CARDITIDAE)
- intermedia, Echinophoria intermedia (G.B. Brocchi, 1814 †) - (CASSIDAE) (FOSSIL)
- intermedia, Urceolarica intermedia (L.M.D. Bellardi, 1873 †) - (CAVOLINIIDAE) (FOSSIL)
- intermedia, Strophiops intermedia (C.J. Maynard, 1889) - (CERIONIDAE)
- intermedia, Iddingsia intermedia K.V.W. Palmer, 1965 † - (CERITHIIDAE) (FOSSIL)
- intermedia, Cerithium vulgatum intermedia E. Réquien, 1848 - (CERITHIIDAE)
- intermedia, Chama intermedia G.B. Brocchi, 1814 - syn of: Cardites antiquatus (C. Linnaeus, 1758) - (CHAMIDAE)
- intermedia, Climocella intermedia J.F. Goulstone, 1997 - (CHAROPIDAE)
- intermedia, Roblinella intermedia (N.H. Odhner, 1917) - (CHAROPIDAE)
- intermedia, Ulungaratoconcha intermedia (d'Archiac & de Verneuil, 1842 †) - (CHEENEETNUKIIDAE) (FOSSIL)
- intermedia, Nesokaliella intermedia L. Pfeiffer - (CHRONIDAE)
- intermedia, Stabilea costata intermedia (L. Pfeiffer, 1847) - (CLAUSILIIDAE)
- intermedia, Turricula intermedia (H.G. Bronn, 1837 †) - (CLAVATULIDAE) (FOSSIL)
- intermedia, Mitrella intermedia P.M. Pallary, 1902 - syn of: Mitrella broderipi (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- intermedia, Liocranchia intermedia C.W. Robson, 1924 - syn of: Liocranchia reinhardtii (J.J.S. Steenstrup, 1856) - (CRANCHIIDAE)
- intermedia, Ctenodonta intermedia Ulrich, 1894 † - (CTENODONTIDAE) (FOSSIL)
- intermedia, Cuvierina intermedia L.M.D. Bellardi, 1873 † - syn of: Urceolarica intermedia (L.M.D. Bellardi, 1873 †) - (CUVIERINIDAE) (FOSSIL)
- intermedia, Corolla intermedia (J.J. Tesch, 1903) - (CYMBULIIDAE)
- intermedia, Mauritia intermedia J.E. Gray, 1827 - syn of: Mauritia arabica (C. Linnaeus, 1758) - (CYPRAEIDAE)
- intermedia, Mauritia intermedia J.H. Redfield, 1847 - syn of: Mauritia depressa (J.E. Gray, 1824) - (CYPRAEIDAE)
- intermedia, Erosaria intermedia E.A. Smith, 1913 - syn of: Erosaria miliaris (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- intermedia, Corbicula intermedia Melleville, 1843 † - (CYRENIDAE) (FOSSIL)
- intermedia, Mesopuzosia intermedia (Kossmat, 1898 †) - (DESMOCERATIDAE) (FOSSIL)
- intermedia, Artachaea intermedia N.B. Eales, 1938 - (DISCODORIDIDAE)
- intermedia, Splendrillia intermedia F.E. Wells, 1995 - (DRILLIIDAE)
- intermedia, Edmondia intermedia de Koninck, 1876 † - syn of: Megadesmus nobilissimus de Koninck, 1876 † - (EDMONDIIDAE) (FOSSIL)
- intermedia, Epitonium intermedia F.W. Hutton, 1873 - syn of: Cirsotrema zelebori (R.W. Dunker, 1866) - (EPITONIIDAE)
- intermedia, Melanella intermedia J.G. Jeffreys, 1867 - syn of: Melanella lubrica (T.A. de M. Monterosato, 1890) - (EULIMIDAE)
- intermedia, Melanella intermedia G.O. Sars, 1878 - syn of: Melanella frielei (H.K. Jordan, 1895) - (EULIMIDAE)
- intermedia, Melanella polita intermedia F.J. Cantraine, 1835 - (EULIMIDAE)
- intermedia, Euomphalus intermedia Sowerby 1814 † - (EUOMPHALIDAE) (FOSSIL)
- intermedia, Mastigospira intermedia La Rocque, 1949 † - (EUOMPHALIDAE) (FOSSIL)
- intermedia, Warthia intermedia Dickins, 1963 † - (EUPHEMITIDAE) (FOSSIL)
- intermedia, Pleuroploca trapezium intermedia (W. Kobelt, 1875) - (FASCIOLARIIDAE)
- intermedia, Amphorella intermedia (T.V. Wollaston, 1878) - (FERUSSACIIDAE)
- intermedia, Ficopsis intermedia (Melleville, 1843 †) - (FICIDAE) (FOSSIL)
- intermedia, Gastrochaena intermedia M. Hörnes, 1859 † - (GASTROCHAENIDAE) (FOSSIL)
- intermedia, Glycymeris intermedia (W.J. Broderip, 1832) - (GLYCYMERIDIDAE)
- intermedia, Glycymeris intermedia (T.A. Conrad, 1849) - syn of: Panopea abrupta (T.A. Conrad, 1849) - (GLYCYMERIDIDAE)
- intermedia, Goniaeolis intermedia (L.S.R. Bergh, 1900) - (GONIAEOLIDIDAE)
- intermedia, Spiroscala intermedia (de Koninck, 1883 †) - (GOSSELETINIDAE) (FOSSIL)
- intermedia, Euryzone intermedia Tolmachoff, 1930 † - (GOSSELETINIDAE) (FOSSIL)
- intermedia, Reynesia intermedia (S.S. Buckman, 1888 †) - (GRAPHOCERATIDAE) (FOSSIL)
- intermedia, Kosicia intermedia (C. Pfeiffer, 1828) - (HELICIDAE)
- intermedia, Cepaea intermedia J.E.H. Scholtz, 1844 - syn of: Cepaea hortensis (O.F. Müller, 1774) - (HELICIDAE)
- intermedia, Helix intermedia E.A. Rossmässler, 1842 - syn of: Cepaea nemoralis (C. Linnaeus) - (HELICIDAE)
- intermedia, Helix intermedia T.V. Wollaston, 1878 - syn of: Cryptaxis groviana leonina (R.T. Lowe, 1852) - (HELICIDAE)
- intermedia, Rossmaessleria homadensis intermedia J. Ahuir, 1990 - (HELICIDAE)
- intermedia, Alcadia intermedia H.A. Pilsbry, 1909 - syn of: Alcadia pusilla (C.B. Adams, 1850) - (HELICINIDAE)
- intermedia, Hemimenia intermedia H.F. Nierstrasz, 1902 - (HEMIMENIIDAE)
- intermedia, Panopea intermedia J. de C. Sowerby, 1814 † - (HIATELLIDAE) (FOSSIL)
- intermedia, Panomya intermedia Khomenko, 1938 - syn of: Panopea abrupta (T.A. Conrad, 1849) - (HIATELLIDAE)
- intermedia, Turricaspia intermedia (N.I. Andrusov, 1902 †) - (HYDROBIIDAE) (FOSSIL)
- intermedia, Pyrgulopsis intermedia (G.W. Tryon, 1865) - (HYDROBIIDAE)
- intermedia, Leucozonella intermedia K.K. Uvalieva, 1995 - (HYGROMIIDAE)
- intermedia, Katostoma intermedia J.A. Albers, 1854 - syn of: Leptaxis nivosa (G.B. I Sowerby, 1824) - (HYGROMIIDAE)
- intermedia, Icanotia intermedia (Pictet & Campiche, 1865 †) - (ICANOTIIDAE) (FOSSIL)
- intermedia, Protoxyclymenia intermedia Nikolaeva & Ivanovich, 2005 † - (KOSMOCLYMENIIDAE) (FOSSIL)
- intermedia, Leptochondria intermedia Yin, 1983 † - (LEIOPECTINIDAE) (FOSSIL)
- intermedia, Limopsis intermedia P.G. Oliver & J.A. Allen, 1980 - (LIMOPSIDAE)
- intermedia, Littoraria intermedia (R.A. Philippi, 1846) - (LITTORINIDAE)
- intermedia, Lacuna intermedia É.A.A. Locard, 1886 - syn of: Lacuna parva (E.M. Da Costa, 1778) - (LITTORINIDAE)
- intermedia, Radiacmea intermedia (H.H. Suter, 1907) - (LOTTIIDAE)
- intermedia, Davidaschvilia intermedia (Andrussov †) - (LUTETIIDAE) (FOSSIL)
- intermedia, Radix intermedia A.E.J. Férussac, 1822 - syn of: Radix labiata (E.A. Rossmässler, 1835) - (LYMNAEIDAE)
- intermedia, Provalenciennesia pauli intermedia (Gorjanovic-Kramberger, 1901 †) - (LYMNAEIDAE) (FOSSIL)
- intermedia, Radix andersoniana intermedia Subba Rao, 1989 - (LYMNAEIDAE)
- intermedia, Mactra intermedia A. Aradas, 1847 - syn of: Mactra stultorum (C. Linnaeus, 1758) - (MACTRIDAE)
- intermedia, Lutraria intermedia G.B. II Sowerby, 1859 - syn of: Lutraria angustior R.A. Philippi, 1844 - (MACTRIDAE)
- intermedia, Mangelia intermedia And. Bivona-Bernardi, 1838 - syn of: Bela powisiana (P. Dautzenberg, 1887) - (MANGELIIDAE)
- intermedia, Mangelia costulata intermedia (F. Nordsieck, 1977) - (MANGELIIDAE)
- intermedia, Marginella intermedia G.B. II Sowerby, 1846 - syn of: Marginella floccata G.B. III Sowerby, 1889 - (MARGINELLIDAE)
- intermedia, Teretrina intermedia F. Haas, 1953 † - (MATHILDIDAE) (FOSSIL)
- intermedia, Medlicottia intermedia Ruzhentsev, 1949 † - (MEDLICOTTIIDAE) (FOSSIL)
- intermedia, Melanopsis intermedia Rzehak, 1883 † - syn of: Melanopsis impressa C.F.F. von Krauss, 1852 † - (MELANOPSIDAE) (FOSSIL)
- intermedia, Mesodesma intermedia L.A. Reeve, 1854 - syn of: Atactodea striata (J.F. Gmelin, 1791) - (MESODESMATIDAE)
- intermedia, Mitra intermedia L.C. Kiener, 1838 - syn of: Vexillum intermedium (L.C. Kiener, 1838) - (MITRIDAE)
- intermedia, Murchisonia intermedia Stauffer, 1909 † - (MURCHISONIIDAE) (FOSSIL)
- intermedia, Menathais intermedia (L.C. Kiener, 1836) - (MURICIDAE)
- intermedia, Eupleura intermedia W.H. Dall, 1890 † - (MURICIDAE) (FOSSIL)
- intermedia, Thalessa intermedia L.C. Kiener, 1835 - syn of: Menathais intermedia (L.C. Kiener, 1836) - (MURICIDAE)
- intermedia, Promyalina intermedia C. Chen, 1976 † - (MYALINIDAE) (FOSSIL)
- intermedia, Gervillia intermedia Münster, 1841 † - syn of: Gervillia angulata Münster, 1841 † - (MYALINIDAE) (FOSSIL)
- intermedia, Mya intermedia (T.A. Conrad, 1849) - syn of: Panopea abrupta (T.A. Conrad, 1849) - (MYIDAE)
- intermedia, Mya intermedia W.H. Dall, 1898 - syn of: Mya baxteri E.V. Coan & P.H. Valentich-Scott, 1997 - (MYIDAE)
- intermedia, Nassa intermedia R.W. Dunker, 1866 - syn of: Nassarius glans (C. Linnaeus, 1758) - (NASSARIIDAE)
- intermedia, Taniella intermedia P.A. Maxwell, 1992 † - (NATICIDAE) (FOSSIL)
- intermedia, Natica intermedia G.P. Deshayes, 1832 † - syn of: Ampullina lignitarum G.P. Deshayes, 1864 † - (NATICIDAE) (FOSSIL)
- intermedia, Natica intermedia C.A. Récluz, 1843 - syn of: Polinices mammilla (C. Linnaeus, 1758) - (NATICIDAE)
- intermedia, Natica intermedia R.A. Philippi, 1836 - syn of: Euspira nitida (E. Donovan, 1804) - (NATICIDAE)
- intermedia, Olivella intermedia G. Paulmier, 2015 - (OLIVELLIDAE)
- intermedia, Onykia intermedia (G.J. Pfeffer, 1912) - (ONYCHOTEUTHIDAE)
- intermedia, Oriocrassatella intermedia (Reed, 1932 †) - (ORIOCRASSATELLIDAE) (FOSSIL)
- intermedia, Procrassatella intermedia Reed, 1932 † - syn of: Oriocrassatella intermedia (Reed, 1932 †) - (ORIOCRASSATELLIDAE) (FOSSIL)
- intermedia, Ovula intermedia G.W. Tryon, 1885 - syn of: Simnia spelta (C. Linnaeus, 1758) - (OVULIDAE)
- intermedia, Pachyclymenia intermedia Bogoslovsky, 1960 † - (PACHYCLYMENIIDAE) (FOSSIL)
- intermedia, Paranowakia intermedia (Barrande, 1867 †) - (PARANOWAKIIDAE) (FOSSIL)
- intermedia, Patella intermedia Murray in E.B. Knapp, 1857 - syn of: Patella depressa T. Pennant, 1777 - (PATELLIDAE)
- intermedia, Subgrossouvria intermedia Spath, 1931 † - (PERISPHINCTIDAE) (FOSSIL)
- intermedia, Tricolia intermedia A. Scacchi, 1836 - syn of: Tricolia speciosa (J.K. Megerle Von Mühlfeld, 1824) - (PHASIANELLIDAE)
- intermedia, Philine intermedia N.M. Knipowitsch, 1902 - syn of: Laona finmarchica (M. Sars, 1859) - (PHILINIDAE)
- intermedia, Pholas intermedia Wood, 1879 † - (PHOLADIDAE) (FOSSIL)
- intermedia, Physa intermedia P.H. Fischer & J.C.H. Crosse, 1886 - syn of: Haitia mexicana (R.A. Philippi, 1841) - (PHYSIDAE)
- intermedia, Mareleptopoma intermedia J. Le Renard & P. Bouchet, 2003 - (PICKWORTHIIDAE)
- intermedia, Biomphalaria intermedia (W.L. Paraense & S. Deslandes, 1962) - (PLANORBIDAE)
- intermedia, Rhabdocantha intermedia E.M. Fletcher, 1958 † - (PLATYCERATIDAE) (FOSSIL)
- intermedia, Pleurotomaria intermedia Münster, 1844 † - (PLEUROTOMARIIDAE) (FOSSIL)
- intermedia, Spongiobranchaea intermedia A. Pruvot-Fol, 1926 - (PNEUMODERMATIDAE)
- intermedia, Cetomya intermedia (T. Habe, 1952) - (POROMYIDAE)
- intermedia, Metamenia intermedia K.H.J. Thiele, 1913 - (PRUVOTINIDAE)
- intermedia, Gari intermedia (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- intermedia, Psammobia intermedia G.P. Deshayes, 1855 - syn of: Gari virgata (J.B.P.A. Lamarck, 1818) - (PSAMMOBIIDAE)
- intermedia, Zemira intermedia N.H. Ludbrook, 1978 † - (PSEUDOLIVIDAE) (FOSSIL)
- intermedia, Plocezyga intermedia Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- intermedia, Ensipteria intermedia F.S. Xu, 1980 † - (PTERIIDA (UNASSIGNED)) (FOSSIL)
- intermedia, Claraia intermedia Bittner, 1901 † - (PTERINOPECTINIDAE) (FOSSIL)
- intermedia, Pterotrachea intermedia J.J. Tesch, 1906 - syn of: Pterotrachea coronata P. Forsskål in C. Niebuhr, 1775 - (PTEROTRACHEIDAE)
- intermedia, Odostomia intermedia (P.P. Carpenter, 1857) - (PYRAMIDELLIDAE)
- intermedia, Eulimella intermedia L. de Folin, 1870 - syn of: Eulimella turris (E. Forbes, 1844) - (PYRAMIDELLIDAE)
- intermedia, Ondina warreni intermedia J.T. Marshall, 1893 - (PYRAMIDELLIDAE)
- intermedia, Teretia intermedia (L. Foresti, 1874 †) - (RAPHITOMIDAE) (FOSSIL)
- intermedia, Raphitoma intermedia F. Nordsieck, 1977 - syn of: Raphitoma purpurea (G. Montagu, 1803) - (RAPHITOMIDAE)
- intermedia, Rectoclymenia intermedia Czarnocki, 1989 † - (RECTOCLYMENIIDAE) (FOSSIL)
- intermedia, Retusa laurenti intermedia (R.A. Philippi, 1843) † - (RETUSIDAE) (FOSSIL)
- intermedia, Retusa mariei intermedia F. Nordsieck, 1972 - (RETUSIDAE)
- intermedia, Lucidestea intermedia (K.H.J. Thiele, 1930) - (RISSOIDAE)
- intermedia, Rissoa intermedia A. Aradas, 1847 - syn of: Alvania cimicoides (E. Forbes, 1844) - (RISSOIDAE)
- intermedia, Clatrofenella intermedia P. Lozouet, 1998 † - (SCALIOLIDAE) (FOSSIL)
- intermedia, Roxania intermedia A. Aradas & G. Maggiore, 1841 - syn of: Roxania utriculus (G.B. Brocchi, 1814) - (SCAPHANDRIDAE)
- intermedia, Schloenbachia varians intermedia Mantell, 1922 † - (SCHLOENBACHIIDAE) (FOSSIL)
- intermedia, Abra intermedia I.C. Thompson, 1845 - syn of: Abra nitida (O.F. Müller, 1776) - (SEMELIDAE)
- intermedia, Sepiola intermedia A. Naef, 1912 - (SEPIOLIDAE)
- intermedia, Diameza intermedia (G.P. Deshayes, 1837 † †) - (SERAPHSIDAE) (FOSSIL)
- intermedia, Schizopea intermedia Ulrich & al., 1931 † - syn of: Schizopea normalis Ulrich & al., 1931 † - (SINUOPEIDAE) (FOSSIL)
- intermedia, Siphonaria intermedia C.A. Davis, 1904 - syn of: Siphonaria alternata (T. Say, 1826) - (SIPHONARIIDAE)
- intermedia, Solariella intermedia (W. Leche, 1878) - (SOLARIELLIDAE)
- intermedia, Spectamen mutabilis intermedia (M.M. Schepman, 1908) - (SOLARIELLIDAE)
- intermedia, Macrochilina intermedia J. Perner, 1903 † - (SOLENISCIDAE) (FOSSIL)
- intermedia, Ianthinopsis intermedia de Koninck, 1881 † - syn of: Strobeus rectilinea (B. Phillips, 1836 †) - (SOLENISCIDAE) (FOSSIL)
- intermedia, Macrochilina intermedia de Koninck, 1881 † - syn of: Strobeus rectilinea (B. Phillips, 1836 †) - (SOLENISCIDAE) (FOSSIL)
- intermedia, Fontannesia intermedia Imlay, 1973 † - syn of: Asthenoceras intermedium (Imlay, 1973 †) - (SONNINIIDAE) (FOSSIL)
- intermedia, Sphenoclymenia intermedia (Gumbel, 1863 †) - (SPHENOCLYMENIIDAE) (FOSSIL)
- intermedia, Cerullia intermedia (Cerulli-Irelli 1909) † - (SPORTELLIDAE) (FOSSIL)
- intermedia, Edentulina intermedia P.M.A. Morelet, 1851 - syn of: Edentulina minor (P.M.A. Morelet, 1851) - (STREPTAXIDAE)
- intermedia, Subulina intermedia J.W. Taylor, 1877 - (SUBULINIDAE)
- intermedia, Pseudoglessula intermedia K.H.J. Thiele, 1911 - (SUBULINIDAE)
- intermedia, Fusispira intermedia Ulrich & Scofield, 1897 † - (SUBULITIDAE) (FOSSIL)
- intermedia, Strioterebrum intermedia E.W. Vredenburg, 1921 † - (TEREBRIDAE) (FOSSIL)
- intermedia, Melania intermedia G. von dem Busch, 1844 - syn of: Pachychilus largillierti (R.A. Philippi, 1843) - (THIARIDAE)
- intermedia, Thracia intermedia W. Clark, 1855 - syn of: Thracia villosiuscula (W. Macgillivray, 1827) - (THRACIIDAE)
- intermedia, Trapezium intermedia Moore † - (TRAPEZIDAE) (FOSSIL)
- intermedia, Similiphora intermedia (C.B. Adams, 1850) - (TRIPHORIDAE)
- intermedia, Inella intermedia (W.H. Dall, 1881) - (TRIPHORIDAE)
- intermedia, Trivia intermedia L.C. Kiener, 1843 - syn of: Trivirostra oryza (J.B.P.A. Lamarck, 1810) - (TRIVIIDAE)
- intermedia, Osilinus intermedia T.A. de M. Monterosato, 1872 - syn of: Phorcus mutabilis (R.A. Philippi, 1846) - (TROCHIDAE)
- intermedia, Guidonia intermedia F. Haas, 1953 † - (TROCHONEMATIDAE) (FOSSIL)
- intermedia, Barbotella intermedia (Radovanovic & Palovic, 1893 †) - (TURBINIDAE) (FOSSIL)
- intermedia, Oligodia intermedia (W.H. Dall, 1892 †) - (TURRITELLIDAE) (FOSSIL)
- intermedia, Sigmesalia intermedia (G.P. Deshayes, 1832 †) - (TURRITELLIDAE) (FOSSIL)
- intermedia, Pterodonta intermedia A.V.M.D. D'Orbigny, 1843 † - (TYLOSTOMATIDAE) (FOSSIL)
- intermedia, Diplodonta intermedia S. Biondi-Giunti, 1859 - (UNGULINIDAE)
- intermedia, Theliderma intermedia (T.A. Conrad, 1836) - (UNIONIDAE)
- intermedia, Centralia intermedia (C. de la Torre, 1911) - (UROCOPTIDAE)
- intermedia, Borysthenia intermedia Kondrashov, 2007 † - (VALVATIDAE) (FOSSIL)
- intermedia, Valvata intermedia É.A.A. Locard, 1888 - syn of: Valvata cristata G. Müller, 1774 - (VALVATIDAE)
- intermedia, Circe intermedia L.A. Reeve, 1863 - (VENERIDAE)
- intermedia, Periglypta intermedia G.B. Sowerby, 1851 - syn of: Tivela stultorum (J. Mawe, 1823) - (VENERIDAE)
- intermedia, Columella intermedia A.A. Schileyko & S.K. Almuhambetova, 1984 - (VERTIGINIDAE)
- intermedia, Vitrina intermedia A.E. Reuss in A.E. Reuss & Meyer, 1849 † - syn of: Phenacolimax intermedius (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (VITRINIDAE) (FOSSIL)
- intermedia, Microvoluta intermedia (W.H. Dall, 1890) - (VOLUTOMITRIDAE)
- intermedia, Leptarionta trigonostoma intermedia (P.H. Fischer & J.C.H. Crosse, 1872) - (XANTHONYCHIDAE)
- intermedia, Portlandia intermedia (G.O. Sars, 1865) - (YOLDIIDAE)
- intermedia articulata, Littoraria intermedia articulata R.A. Philippi, 1846 - syn of: Littoraria articulata (R.A. Philippi, 1846) - (LITTORINIDAE)
- intermedia crassitesta, Vitrina intermedia crassitesta A. Andreae, 1902 † - syn of: Phenacolimax crassitesta (A. Andreae, 1902 †) - (VITRINIDAE) (FOSSIL)
- intermedia curta, Gastrochaena intermedia curta C. Mayer, 1889 - (GASTROCHAENIDAE)
- intermedia depressa, Patella intermedia depressa T. Pennant, 1777 - syn of: Patella depressa T. Pennant, 1777 - (PATELLIDAE)
- intermedia major, Yoldiella intermedia major W. Leche, 1878 - syn of: Portlandia intermedia (G.O. Sars, 1865) - (YOLDIIDAE)
- intermedia masisiensis, Pseudoglessula intermedia masisiensis H.A. Pilsbry, 1919 - (SUBULINIDAE)
- intermedia orientalis, Mesopuzosia intermedia orientalis E. Matsumoto, 1954 † - (DESMOCERATIDAE) (FOSSIL)
- intermedia postintermedia, Paranowakia intermedia postintermedia Alberti, 1997 † - (PARANOWAKIIDAE) (FOSSIL)
- intermedia praecedens, Davidaschvilia intermedia praecedens Merklin, 1950 † - (LUTETIIDAE) (FOSSIL)
- intermedia praecedens, Davidaschvilia intermedia praecedens (N.I. Andrusov, 1910 †) - (LUTETIIDAE) (FOSSIL)
- intermedia punctata, Littorina intermedia punctata R.A. Philippi, 1846 - syn of: Littoraria intermedia (R.A. Philippi, 1846) - (LITTORINIDAE)
- intermedia strigata, Littorina intermedia strigata R.A. Philippi, 1846 - syn of: Littoraria strigata C.E. Lischke, 1871 - (LITTORINIDAE)
- intermediata, Galeodea intermediata G.S. Coen, 1933 - syn of: Galeodea echinophora (C. Linnaeus, 1758) - (CASSIDAE)
- intermedis, Architectonica intermedis G.P. Deshayes, 1863 † - (ARCHITECTONICIDAE) (FOSSIL)
- intermedium, Nybyoceras intermedium Teichert, 1930 † - (ARMENOCERATIDAE) (FOSSIL)
- intermedium, Hysteroceras intermedium F. Haas, 1942 † - (BRANCOCERATIDAE) (FOSSIL)
- intermedium, Elobiceras intermedium Spath, 1922 † - (BRANCOCERATIDAE) (FOSSIL)
- intermedium, Cenoceras intermedium (J. de C. Sowerby, 1816 †) - (CENOCERATIDAE) (FOSSIL)
- intermedium, Cerithium intermedium E. Réquien, 1848 - (CERITHIIDAE)
- intermedium, Chaetoderma intermedium N.M. Knipowitsch, 1896 - (CHAETODERMATIDAE)
- intermedium, Cochlostoma intermedium (N. Pini, 1885) - (COCHLOSTOMATIDAE)
- intermedium, Vexillum intermedium (L.C. Kiener, 1838) - (COSTELLARIIDAE)
- intermedium, Timorites intermedium (J. Wanner, 1932 †) - (CYCLOLOBIDAE) (FOSSIL)
- intermedium, Hanieloceras intermedium J. Wanner, 1932 † - syn of: Timorites intermedium (J. Wanner, 1932 †) - (CYCLOLOBIDAE) (FOSSIL)
- intermedium, Cyrtogomphoceras intermedium (J.J.F. Whiteaves, 1897 †) - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- intermedium, Echioceras intermedium (Trueman & Williams, 1925 †) - (ECHIOCERATIDAE) (FOSSIL)
- intermedium, Acutimitoceras intermedium (Schindewolf, 1923 †) - (GATTENDORFIIDAE) (FOSSIL)
- intermedium, Manticoceras intermedium (C.L.F. von Sandberger, 1851 †) - (GEPHUROCERATIDAE) (FOSSIL)
- intermedium, Manticoceras intermedium Wedekind, 1913 † - syn of: Manticoceras intermedium (C.L.F. von Sandberger, 1851 †) - (GEPHUROCERATIDAE) (FOSSIL)
- intermedium, Phyllytoceras intermedium Wiedmann, 1970 † - (GYMNITIDAE) (FOSSIL)
- intermedium, Flindersites intermedium Whitehouse, 1926 † - (LABECERATIDAE) (FOSSIL)
- intermedium, Gyronema intermedium Bradley, 1930 † - syn of: Cyclonema intermedium (Bradley, 1930 †) - (LOPHOSPIRIDAE) (FOSSIL)
- intermedium, Shasticrioceras intermedium Matsukawa & Obata, 1993 † - (MEGACRIOCERATIDAE) (FOSSIL)
- intermedium, Haustrum intermedium (Powell & J.A. Bartrum, 1929 †) - (MURICIDAE) (FOSSIL)
- intermedium, Rizoceras intermedium (Barrande, 1865 †) - (ONCOCERATIDAE) (FOSSIL)
- intermedium, Cyphoma intermedium (G.B. I Sowerby, 1828) - (OVULIDAE)
- intermedium, Ovula intermedium G.B. I Sowerby, 1828 - syn of: Cyphoma intermedium (G.B. I Sowerby, 1828) - (OVULIDAE)
- intermedium, Cyclonema intermedium (Bradley, 1930 †) - (PLATYCERATIDAE) (FOSSIL)
- intermedium, Nikitinoceras intermedium Klimova, 1984 † - (POLYPTYCHITIDAE) (FOSSIL)
- intermedium, Cyclostoma intermedium C.B. Adams, 1849 - syn of: Adamsiella monstrosa (C.B. Adams, 1849) - (POMATIIDAE)
- intermedium, Imitoceras intermedium Schindewolf, 1923 † - syn of: Acutimitoceras intermedium (Schindewolf, 1923 †) - (PRIONOCERATIDAE) (FOSSIL)
- intermedium, Reticuloceras intermedium (T. Brown †) - (RETICULOCERATIDAE) (FOSSIL)
- intermedium, Asthenoceras intermedium (Imlay, 1973 †) - (SONNINIIDAE) (FOSSIL)
- intermedium, Pisidium intermedium J. Gassies, 1855 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- intermedium, Kheraiceras intermedium Imlay, 1953 † - syn of: Iniskinites abruptus (Imlay, 1953 †) - (TULITIDAE) (FOSSIL)
- intermedium, Vasum intermedium (J.P.S. Grateloup, 1840 †) - (TURBINELLIDAE) (FOSSIL)
- intermedium, Nannovascoceras intermedium Renz & J. Alvarez, 1979 † - (VASCOCERATIDAE) (FOSSIL)
- intermedium, Sulioticeras intermedium (Tozer, 1965 †) - (XENOCELTITIDAE) (FOSSIL)
- intermedium, Yanheceras intermedium B.Z. Li, 1984 † - (YANHECERIDA (UNASSIGNED)) (FOSSIL)
- intermedium gibsonsmithorum, Cyphoma intermedium gibsonsmithorum E.J. Petuch, 1987 - (OVULIDAE)
- intermedius, Strobilus opeas intermedius C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- intermedius, Dissimilites intermedius Lukeneder & Lukeneder, 2014 † - (ACRIOCERATIDAE) (FOSSIL)
- intermedius, Acteon intermedius G.F. Angas, 1879 - syn of: Pupa affinis (A. Adams, 1855) - (ACTEONIDAE)
- intermedius, Agoniatites intermedius Flower, 1936 † - (AGONIATITIDAE) (FOSSIL)
- intermedius, Colchidites intermedius Djanelidze, 1926 † - (ANCYLOCERATIDAE) (FOSSIL)
- intermedius, Quadrinervus intermedius (L.É.S. Piette, 1869 †) - (APORRHAIDAE) (FOSSIL)
- intermedius, Arion intermedius N.A.J. Normand, 1852 - (ARIONIDAE)
- intermedius, Pyrazisinus intermedius E.J. Petuch, 1994 † - (BATILLARIIDAE) (FOSSIL)
- intermedius, Nehdenites intermedius (Schindewolf, 1923 †) - (CHEILOCERATIDAE) (FOSSIL)
- intermedius, Conus intermedius L.A. Reeve, 1843 - syn of: Gastridium eldredi (J.P.E. Morrison, 1955) - (CONIDAE)
- intermedius, Conus intermedius J.B.P.A. Lamarck, 1810 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- intermedius, Amphiscapha intermedius W.J. Gordon & E.L. Yochelson, 1983 † - (EUOMPHALIDAE) (FOSSIL)
- intermedius, Fusus intermedius L.H. Hupé in C. Gay, 1854 - syn of: Trophon geversianum (P.S. Pallas, 1774) - (FASCIOLARIIDAE)
- intermedius, Latirus intermedius H.C. Küster, 1876 - syn of: Polygona angulata (P.F. Röding, 1798) - (FASCIOLARIIDAE)
- intermedius, Goniatites intermedius Kobold, 1930 † - syn of: Goniatites concentricus F. Hodson & Moore, 1959 † - (GONIATITIDAE) (FOSSIL)
- intermedius, Erycites intermedius M. von P. Hantken in Prinz, 1904 † - (HAMMATOCERATIDAE) (FOSSIL)
- intermedius, Iberus marmoratus intermedius (C.R. Böttger, 1913) - (HELICIDAE)
- intermedius, Hemihoplites intermedius J.J. Vermeulen, 2003 † - (HEMIHOPLITIDAE) (FOSSIL)
- intermedius, Panopea halli intermedius G.B. Pritchard, 1903 † - (HIATELLIDAE) (FOSSIL)
- intermedius, Orthildaites intermedius Guex, 1973 † - syn of: Orthildaites douvillei (Haug, 1884 †) - (HILDOCERATIDAE) (FOSSIL)
- intermedius, Anahoplites intermedius (Spath 1925 †) - (HOPLITIDAE) (FOSSIL)
- intermedius, Gevanites epigonus intermedius Parnes, 1986 † - (HUNGARITIDAE) (FOSSIL)
- intermedius, Ischnochiton intermedius C. Hedley & A.F.B. Hull, 1912 - (ISCHNOCHITONIDAE)
- intermedius, Preflorianites intermedius Tozer, 1965 † - syn of: Sulioticeras intermedium (Tozer, 1965 †) - (KASHMIRITIDAE) (FOSSIL)
- intermedius, Leptochiton intermedius L. Salvini-Plawén, 1968 - syn of: Leptochiton cimicoides (T.A. de M. Monterosato, 1879) - (LEPTOCHITONIDAE)
- intermedius, Bensaidites intermedius (Foord & Crick, 1897 †) - (MAENIOCERATIDAE) (FOSSIL)
- intermedius, Anasibirites intermedius Bando, 1964 † - (MELAGATHICERATIDAE) (FOSSIL)
- intermedius, Juresanites intermedius Shkolin, 1992 † - (METALEGOCERATIDAE) (FOSSIL)
- intermedius, Mipus intermedius S. Kosuge, 1985 - (MURICIDAE)
- intermedius, Typhis intermedius L.M.D. Bellardi, 1872 † - (MURICIDAE) (FOSSIL)
- intermedius, Trophon intermedius T.A. Verkrüzen, 1881 - syn of: Boreotrophon clathratus (C. Linnaeus, 1767) - (MURICIDAE)
- intermedius, Murex intermedius C.B. Adams, 1850 - syn of: Favartia alveata (L.C. Kiener, 1842) - (MURICIDAE)
- intermedius, Stolleyites intermedius (Frebold, 1929 †) - (NATHORSTITIDAE) (FOSSIL)
- intermedius, Nautilus intermedius J. de C. Sowerby, 1816 † - syn of: Cenoceras intermedium (J. de C. Sowerby, 1816 †) - (NAUTILIDAE) (FOSSIL)
- intermedius, Trigonodus intermedius (L. Waagen, 1907 †) - (PACHYCARDIIDAE) (FOSSIL)
- intermedius, Pecten intermedius T.A. de M. Monterosato, 1899 - syn of: Pecten jacobaea (C. Linnaeus, 1758) - (PECTINIDAE)
- intermedius, Gracilisphinctes intermedius Jain, 2014 † - (PERISPHINCTIDAE) (FOSSIL)
- intermedius, Choanomphalus intermedius W. Dybowski, 1901 - syn of: Choanomphalus valvatoides W. Dybowski, 1875 - (PLANORBIDAE)
- intermedius, Proptychites intermedius (Spath, 1935 †) - (PROPTYCHITIDAE) (FOSSIL)
- intermedius, Charadreon intermedius Wesselingh, 2006 † - (PSEUDOMELANIIDAE) (FOSSIL)
- intermedius, Ptychomphalus intermedius de Koninck, 1883 † - syn of: Spiroscala intermedia (de Koninck, 1883 †) - (PTYCHOMPHALIDAE) (FOSSIL)
- intermedius, Monoplex intermedius W.H. Pease, 1869 - (RANELLIDAE)
- intermedius, Rimkinites intermedius Wang & He, 1976 † - (RIMKINITIDAE) (FOSSIL)
- intermedius, Dinarites intermedius Mojsisovics, 1888 † - syn of: Olenikites spiniplicatus (Mojsisovics, 1886 †) - (SIBIRITIDAE) (FOSSIL)
- intermedius, Siphogonuchites intermedius Z.X. Qian, 1977 † - (SIPHOGONUCHITIDAE) (FOSSIL)
- intermedius, Solen intermedius F.C.L. Koch, 1843 - syn of: Solen ceylonensis W.E. Leach, 1814 - (SOLENIDAE)
- intermedius, Solen intermedius T. Kira, 1955 - syn of: Solen kurodai T. Habe, 1964 - (SOLENIDAE)
- intermedius, Iniskinites intermedius (Imlay, 1953 †) - (SPHAEROCERATIDAE) (FOSSIL)
- intermedius, Sphenodiscus intermedius Böse, 1928 † - (SPHENODISCIDAE) (FOSSIL)
- intermedius, Rectaxis intermedius (H. Strebel, 1882) - (SPIRAXIDAE)
- intermedius, Rectartemon intermedius (J.A. Albers, 1857) - (STREPTAXIDAE)
- intermedius, Strombus intermedius J.P.S. Grateloup, 1834 † - (STROMBIDAE) (FOSSIL)
- intermedius, Metacarnites intermedius Wang & He, 1976 † - syn of: Metacarnites hendersoni Diener, 1908 † - (TIBETITIDAE) (FOSSIL)
- intermedius, Circulus intermedius (G.P. Deshayes, 1862 †) - (TORNIDAE) (FOSSIL)
- intermedius, Hoplotropites intermedius Tozer, 1994 † - (TROPITIDAE) (FOSSIL)
- intermedius, Turbo intermedius Münster, 1841 † - (TURBINIDAE) (FOSSIL)
- intermedius, Pseudoneoptychites intermedius Renz, 1982 † - (VASCOCERATIDAE) (FOSSIL)
- intermedius, Phenacolimax intermedius (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (VITRINIDAE) (FOSSIL)
- intermedoides, Ostrea intermedoides T.H. Aldrich, 1921 † - (OSTREIDAE) (FOSSIL)
- intermerata, Anodonta intermerata F. Paetel, 1890 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- intermeratus, Polinices intermeratus R.A. Philippi, 1851 † - (NATICIDAE) (FOSSIL)
- intermissa, Filodrillia tricarinata intermissa (C.F. Laseron, 1954) - (BORSONIIDAE)
- intermissa, Cylichna intermissa A. von Koenen † - (CYLICHNIDAE) (FOSSIL)
- intermissa, Helix intermissa C.A. Westerlund, 1897 - syn of: Helix albescens G. Jan in E.A. Rossmässler, 1839 - (HELICIDAE)
- intermissa, Oxychilus intermissa É.A.A. Locard, 1894 - syn of: Oxychilus draparnaudi (H.H. Beck, 1837) - (OXYCHILIDAE)
- intermissa, Parthenina intermissa (Thiele, 1925) - (PYRAMIDELLIDAE)
- intermissa, Solariella intermissa K.H.J. Thiele, 1925 - (SOLARIELLIDAE)
- intermissalineata, Mitrella intermissalineata K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- intermissia, Cylichna intermissia N.F. Sohl, 1964 † - (CYLICHNIDAE) (FOSSIL)
- intermissia curta, Cylichna intermissia curta N.F. Sohl, 1964 - (CYLICHNIDAE)
- intermissus, Cautor intermissus (C.F. Laseron, 1958) - (TRIPHORIDAE)
- intermittens, Promathildia intermittens E.A.L. Kittl, 1894 † - (GORDENELLIDAE) (FOSSIL)
- intermittens, Anatomites intermittens Mojsisovics, 1893 † - (HALORITIDAE) (FOSSIL)
- intermittens, Eumilax intermittens (O. Böttger, 1883) - (LIMACIDAE)
- intermittens, Mitra intermittens R. Hoernes & M. Auinger, 1897 † - (MITRIDAE) (FOSSIL)
- intermittens, Pecten intermittens Whidborne † - (PECTINIDAE) (FOSSIL)
- intermittens, Eoptychia intermittens Hoare, 1961 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- intermittens szobbiensis, Mitra intermittens szobbiensis Halaváts, † - (MITRIDAE) (FOSSIL)
- intermixta, Stewartia anodonta intermixta A.A. Olsson & A. Harbison, 1953 † - (LUCINIDAE) (FOSSIL)
- intermixta, Chrysallida intermixta (T.A. de M. Monterosato, 1884) - (PYRAMIDELLIDAE)
- intermixta flexicosta, Chrysallida intermixta flexicosta M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1885 - (PYRAMIDELLIDAE)
- intermixta major, Chrysallida intermixta major F. Nordsieck, 1972 - (PYRAMIDELLIDAE)
- intermixtum, Columenoceras intermixtum (Barrande, 1867 †) - (GEISONOCERATIDAE) (FOSSIL)
- intermixtus, Planorbis intermixtus A. Mousson, 1874 - (PLANORBIDAE)
- intermontanum, Pseudosageceras intermontanum A. Hyatt & Smith, 1905 † - syn of: Pseudosageceras multilobatum Noetling, 1905 † - (HEDENSTROEMIIDAE) (FOSSIL)
- intermontanus, Xenoceltites intermontanus Smith, 1932 † - syn of: Xenoceltites cordilleranus (Smith, 1932 †) - (KASHMIRITIDAE) (FOSSIL)
- intermontanus, Xenodiscus intermontanus Smith, 1932 † - syn of: Xenoceltites cordilleranus (Smith, 1932 †) - (MEEKOCERATIDAE) (FOSSIL)
- interna, Neveritis interna T. Iredale, 1943 - (CAMAENIDAE)
- interna, Gastrocopta interna (T. Say, 1822) - (GASTROCOPTIDAE)
- interna, Gastrodonta interna (T. Say, 1822) - (GASTRODONTIDAE)
- interna, Euspira interna (T. Say, 1824 †) - (NATICIDAE) (FOSSIL)
- internastriatum, Curtoceras internastriatum (R.P. Whitfield, 1886 †) - (TROCHOLITIDAE) (FOSSIL)
- internastriatus, Lituites internastriatus R.P. Whitfield, 1886 † - syn of: Curtoceras internastriatum (R.P. Whitfield, 1886 †) - (LITUITIDAE) (FOSSIL)
- internenodosa, Buehreriella internenodosa M. Collignon, 1969 † - (MUNIERICERATIDAE) (FOSSIL)
- internexus, Lepidozona internexus P.P. Carpenter in H.A. Pilsbry, 1892 - syn of: Leptochiton rugatus internexus (P.P. Carpenter in H.A. Pilsbry, 1892) - (ISCHNOCHITONIDAE)
- internexus, Leptochiton rugatus internexus (P.P. Carpenter in H.A. Pilsbry, 1892) - (LEPTOCHITONIDAE)
- internicolium, Sporadoceras internicolium Pajchlowa, 1972 † - (SPORADOCERATIDAE) (FOSSIL)
- internispinosum, Windhauseniceras internispinosum (Krantz, 1928 †) - (HIMALAYITIDAE) (FOSSIL)
- internistriatum, Lituites internistriatum R.P. Whitfield, 1886 † - syn of: Curtoceras internastriatum (R.P. Whitfield, 1886 †) - (LITUITIDAE) (FOSSIL)
- internodula, Pyrgolidium internodula (Wood, 1847) - (PYRAMIDELLIDAE)
- internodula, Alvania internodula H.J. Hoenselaar & J. Goud, 1998 - (RISSOIDAE)
- internota, Elaphroconcha internota E.A. Smith - (ARIOPHANTIDAE)
- interolineata, Megastomia interolineata (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- interpicta, Mastonia interpicta F.P. Jousseaume, 1898 - (TRIPHORIDAE)
- interpictus, Drymaeus interpictus E.C. Von Martens, 1867 - (BULIMULIDAE)
- interpictus diversipictus, Drymaeus interpictus diversipictus H.A. Pilsbry, 1944 - (BULIMULIDAE)
- interplanata, Myophorella interplanata Lebküchner, 1932 † - (MYOPHORELLIDAE) (FOSSIL)
- interpleura, Clathrodrillia interpleura (W.H. Dall & C.T. Simpson, 1901) - (DRILLIIDAE)
- interpleura, Drillia interpleura W.H. Dall & C.T. Simpson, 1901 - syn of: Clathrodrillia interpleura (W.H. Dall & C.T. Simpson, 1901) - (DRILLIIDAE)
- interpleura, Buchema interpleura (W.H. Dall & C.T. Simpson, 1901) - (HORAICLAVIDAE)
- interplicata, Arca interplicata A.W. Grabau & S.G. King, 1928 - syn of: Verilarca interplicata (A.W. Grabau & S.G. King, 1928) - (ARCIDAE)
- interplicata, Lucilina interplicata C.A.à Bergen, 1933 - (CHITONIDAE)
- interplicata, Verilarca interplicata (A.W. Grabau & S.G. King, 1928) - (NOETIIDAE)
- interplicatus, Gotlandochiton interplicatus J.R.M. Bergenhayn, 1955 † - (GOTLANDOCHITONIDAE) (FOSSIL)
- interpolata, Gemmula interpolata A.W.B. Powell, 1967 - (TURRIDAE)
- interpolatus, Hyphoplites falcatus interpolatus C.W. Wright & E.V. Wright, 1949 † - (HOPLITIDAE) (FOSSIL)
- interposita, Arca interposita G.P. Deshayes, 1858 - (ARCIDAE)
- interposita, Cochlodinastra interposita P. von Ströbel, 1878 - syn of: Cochlodinastra comensis (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- interposita, Graeca mixta interposita H. Nordsieck, 2007 - (CLAUSILIIDAE)
- interposita, Cypraea interposita G.P. Deshayes, 1865 † - syn of: Cypraedia interposita (G.P. Deshayes, 1865 †) - (CYPRAEIDAE) (FOSSIL)
- interposita, Scapularca interposita (G.P. Deshayes, 1858 †) - (NOETIIDAE) (FOSSIL)
- interposita, Cypraedia interposita (G.P. Deshayes, 1865 †) - (OVULIDAE) (FOSSIL)
- interposita, Dorymenia interposita L. Salvini-Plawén, 1978 - (PRONEOMENIIDAE)
- interposita, Peyrotia interposita (G.P. Deshayes, 1861 †) - (TURRITELLIDAE) (FOSSIL)
- interposita, Valvata interposita C. De Stefani, 1880 † - (VALVATIDAE) (FOSSIL)
- interpositum, Xanthomelon interpositum T. Iredale, 1938 - syn of: Xanthomelon spheroidea (E.J. Le Guillou, 1845) - (CAMAENIDAE)
- interpositum, Zugocosmoceras interpositum S.S. Buckman, 1923 † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- interpositus, Cryptoconus interpositus (G.P. Deshayes, 1865 †) - (CONIDAE) (FOSSIL)
- interpositus, Latirus interpositus G.P. Deshayes, 1865 † - (FASCIOLARIIDAE) (FOSSIL)
- interpositus, Theodoxus mutinensis interpositus (F. Sacco, 1896 †) - (NERITIDAE) (FOSSIL)
- interpres, Miroclymenia interpres Schindewolf, 1923 † - syn of: Cymaclymenia interpres (Schindewolf, 1923 †) - (CLYMENIIDA (unassigned)) (FOSSIL)
- interpres, Cymaclymenia interpres (Schindewolf, 1923 †) - (CYMACLYMENIIDAE) (FOSSIL)
- interpres, Helicella interpres (C.A. Westerlund, 1879) - (HYGROMIIDAE)
- interpres, Typhis interpres T. Iredale, 1924 - syn of: Typhis phillipensis R.B. Watson, 1883 - (MURICIDAE)
- interpres, Triphora interpres J.C. Melvill, 1918 - (TRIPHORIDAE)
- interpressa, Syrnola interpressa A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- interpuncta, Voluta interpuncta L.A. Reeve, 1849 - syn of: Harpulina lapponica (C. Linnaeus, 1767) - (VOLUTIDAE)
- interpunctata, Purpuradusta interpunctata A. Henn, 1896 - syn of: Purpuradusta gracilis macula (G.F. Angas, 1867) - (CYPRAEIDAE)
- interpunctata, Cerodrillia interpunctata E.A. Smith, 1882 - syn of: Splendrillia coccinata (L.A. Reeve, 1845) - (DRILLIIDAE)
- interpunctata, Splendrillia interpunctata E.A. Smith, 1882 - syn of: Splendrillia coccinata (L.A. Reeve, 1845) - (DRILLIIDAE)
- interpunctata, Mitra interpunctata N.H. Odhner, 1919 - syn of: Vexillum scitulum (A. Adams, 1853) - (MITRIDAE)
- interpunctata, Harpulina interpunctata M. Smith, 1942 - syn of: Harpulina lapponica (C. Linnaeus, 1767) - (VOLUTIDAE)
- interpunctatus, Napaeus interpunctatus (T.V. Wollaston, 1878) - (ENIDAE)
- interpunctus, Drymaeus interpunctus E.C. Von Martens, 1887 - (BULIMULIDAE)
- interradiatus, Propeamussium interradiatus (W.M. Gabb 1869 †) - (PROPEAMUSSIIDAE) (FOSSIL)
- interrex, Setobaudinia interrex G.A. Solem, 1985 - (CAMAENIDAE)
- interrogationis, Macroceramus interrogationis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- interrogatorium, Keenocardium interrogatorium E. Fischer-Piette, 1977 - syn of: Keenocardium californiense (G.P. Deshayes, 1839) - (CARDIIDAE)
- interrumpens, Sinutropis interrumpens J. Perner, 1903 † - (EUOMPHALIDAE) (FOSSIL)
- interrupta, Pomacea interrupta (G.B. III Sowerby, 1909) - (AMPULLARIIDAE)
- interrupta, Anomia interrupta F.E. Eames, 1951 † - (ANOMIIDAE) (FOSSIL)
- interrupta, Arca interrupta J.B.P.A. Lamarck, 1805 † - (ARCIDAE) (FOSSIL)
- interrupta, Ariophanta interrupta (W.H. Benson, 1834) - (ARIOPHANTIDAE)
- interrupta, Cardiola interrupta Brod, 1839 † - (CARDIOLIDAE) (FOSSIL)
- interrupta, Herilla jabucica interrupta H. Nordsieck, 1971 - (CLAUSILIIDAE)
- interrupta, Clavatula interrupta (G.B. Brocchi, 1814 †) - (CLAVATULIDAE) (FOSSIL)
- interrupta, Clymenia interrupta Münster, 1842 † - syn of: Sellaclymenia interrupta (Münster, 1842 †) - (CLYMENIIDAE) (FOSSIL)
- interrupta, Columbella interrupta G.F. Angas, 1865 - syn of: Pyreneola fulgida (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- interrupta, Anachis interrupta G.F. Angas, 1865 - syn of: Pyreneola fulgida (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- interrupta, Vexillum interrupta A. Adams, 1853 - syn of: Vexillum jukesii (A. Adams, 1853) - (COSTELLARIIDAE)
- interrupta, Blasicrura interrupta (J.E. Gray, 1824) - (CYPRAEIDAE)
- interrupta, Cypraea interrupta J.E. Gray, 1824 - syn of: Blasicrura interrupta (J.E. Gray, 1824) - (CYPRAEIDAE)
- interrupta, Persicula interrupta J.B.P.A. Lamarck, 1822 - syn of: Persicula interruptolineata (J.K. Megerle Von Mühlfeld, 1816) - (CYSTISCIDAE)
- interrupta, Donax rugosus interrupta G.P. Deshayes, 1854 - (DONACIDAE)
- interrupta, Niso interrupta (G.B. I Sowerby, 1834) - (EULIMIDAE)
- interrupta, Mucronalia interrupta (C.B. Adams, 1864) - (EULIMIDAE)
- interrupta, Eulima interrupta G.B. I Sowerby, 1834 - syn of: Niso interrupta (G.B. I Sowerby, 1834) - (EULIMIDAE)
- interrupta, Gastrochaena interrupta G.P. Deshayes, 1855 - syn of: Dufoichaena dentifera (H. Dufo, 1840) - (GASTROCHAENIDAE)
- interrupta, Pyrgula interrupta Š. Brusina, 1878 † - (HYDROBIIDAE) (FOSSIL)
- interrupta, Hygromia interrupta L. Benoit, 1872 - syn of: Hygromia cinctella (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- interrupta, Cyclostrema interrupta (C.B. Adams, 1850) - (LIOTIIDAE)
- interrupta, Echinolittorina interrupta (R.A. Philippi, 1847) - (LITTORINIDAE)
- interrupta, Nodilittorina interrupta C.B. Adams in R.A. Philippi, 1847 - syn of: Echinolittorina interrupta (R.A. Philippi, 1847) - (LITTORINIDAE)
- interrupta, Codakia interrupta (J.B.P.A. Lamarck, 1818) - (LUCINIDAE)
- interrupta, Macteola interrupta (L.A. Reeve, 1846) - (MANGELIIDAE)
- interrupta, Marginella interrupta J.B.P.A. Lamarck, 1822 - syn of: Persicula interruptolineata (J.K. Megerle Von Mühlfeld, 1816) - (MARGINELLIDAE)
- interrupta, Mitra interrupta H.E. Anton, 1838 - syn of: Pusia interruptum (H.E. Anton, 1838) - (MITRIDAE)
- interrupta, Nerita interrupta C.A. Récluz, 1843 - syn of: Clithon faba (G.B. I Sowerby, 1836) - (NERITIDAE)
- interrupta, Nuculana interrupta G.S. Poli, 1795 - syn of: Nuculana pella (C. Linnaeus, 1767) - (NUCULANIDAE)
- interrupta, Laevaricella interrupta (R.J. Shuttleworth, 1854) - (OLEACINIDAE)
- interrupta, Parallelodon interrupta de Koninck, 1898 † - (PARALLELODONTIDAE) (FOSSIL)
- interrupta, Elimia interrupta (S.S. Haldeman, 1840) - (PLEUROCERIDAE)
- interrupta, Inquisitor interrupta (J.B.P.A. Lamarck, 1816) - (PSEUDOMELATOMIDAE)
- interrupta, Gibbulinopsis interrupta (O.W.H. Reinhardt, 1876) - (PUPILLIDAE)
- interrupta, Turbonilla interrupta (J.G. Totten, 1835) - (PYRAMIDELLIDAE)
- interrupta, Daphnella interrupta W.H. Pease, 1860 - (RAPHITOMIDAE)
- interrupta, Strombolaria interrupta (G.P. Deshayes, 1865 † †) - (RIMELLIDAE) (FOSSIL)
- interrupta, Alvania interrupta (Finlay, 1924 †) - (RISSOIDAE) (FOSSIL)
- interrupta, Rissoa parva interrupta (J. Adams, 1800) - (RISSOIDAE)
- interrupta, Rissoina interrupta Credner, 1864 † - (RISSOINIDAE) (FOSSIL)
- interrupta, Scolodonta interrupta (H.H. Suter, 1900) - (SCOLODONTIDAE)
- interrupta, Sellaclymenia interrupta (Münster, 1842 †) - (SELLACLYMENIIDAE) (FOSSIL)
- interrupta, Stantonella interrupta (T.A. Conrad, 1858 †) - (STREPSIDURIDAE) (FOSSIL)
- interrupta, Strigilla interrupta O.A.L. Mörch, 1860 - (TELLINIDAE)
- interrupta, Pleurotoma interrupta J.B.P.A. Lamarck, 1816 - syn of: Inquisitor interrupta (J.B.P.A. Lamarck, 1816) - (TURRIDAE)
- interrupta, Turritella interrupta J.G. Totten, 1835 - syn of: Turbonilla interrupta (J.G. Totten, 1835) - (TURRITELLIDAE)
- interrupta, Idiostemma interrupta (J. Gundlach in L. Pfeiffer, 1857) - (UROCOPTIDAE)
- interrupta, Cytherea interrupta J.B.P.A. Lamarck, 1818 - syn of: Codakia interrupta (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- interrupta, Venus interrupta F.C.L. Koch in R.A. Philippi, 1849 - syn of: Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- interrupta, Lyropupa perlonga interrupta H.A. Pilsbry & C.M. Cooke, 1920 - (VERTIGINIDAE)
- interrupta, Nesopupa newcombi interrupta C.M. Cooke & H.A. Pilsbry, 1920 - (VERTIGINIDAE)
- interrupta albida, Niso interrupta albida W.H. Dall, 1889 - syn of: Niso albida W.H. Dall, 1889 - (EULIMIDAE)
- interrupta bifasciata, Rissoa interrupta bifasciata G.O. Sars, 1878 - syn of: Rissoa parva (E.M. Da Costa, 1778) - (RISSOIDAE)
- interrupta circinata, Niso interrupta circinata W.H. Dall, 1889 - syn of: Niso circinata W.H. Dall, 1889 - (EULIMIDAE)
- interruptalineata, Persicula interruptalineata J.K. Megerle Von Mühlfeld, 1818 - (CYSTISCIDAE)
- interruptelineata, Alaba interruptelineata H.A. Pilsbry & H.N. Lowe, 1932 - (LITIOPIDAE)
- interruptofasciatus, Drymaeus interruptofasciatus J.H. Vernhout, 1914 - (BULIMULIDAE)
- interruptolineata, Persicula interruptolineata (J.K. Megerle Von Mühlfeld, 1816) - (CYSTISCIDAE)
- interruptolineata, Marginella interruptolineata J.K. Megerle Von Mühlfeld, 1816 - syn of: Persicula interruptolineata (J.K. Megerle Von Mühlfeld, 1816) - (MARGINELLIDAE)
- interruptolineata, Voluta interruptolineata J.K. Megerle Von Mühlfeld, 1816 - syn of: Persicula interruptolineata (J.K. Megerle Von Mühlfeld, 1816) - (VOLUTIDAE)
- interruptolineata mareana, Persicula interruptolineata mareana N.E. Weisbord, 1962 - (CYSTISCIDAE)
- interruptolineata weberi, Persicula interruptolineata weberi A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Persicula weberi (A.A. Olsson & J.T.L. McGinty, 1958) - (CYSTISCIDAE)
- interruptum, Caecum interruptum L. de Folin, 1867 - (CAECIDAE)
- interruptum, Calliostoma interruptum Cox, 1949 † - syn of: Eocalliostoma interruptum (Cox, 1949 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- interruptum, Cardium interruptum Woods, 1850 † - (CARDIIDAE) (FOSSIL)
- interruptum, Liocerithium interruptum (K.T. Menke, 1851) - (CERITHIIDAE)
- interruptum, Cerithium interruptum J.B.P.A. Lamarck, 1847 † - syn of: Terebralia subcorrugata A.V.M.D. D'Orbigny, 1852 † - (CERITHIIDAE) (FOSSIL)
- interruptum, Pusia interruptum (H.E. Anton, 1838) - (COSTELLARIIDAE)
- interruptum, Antalis interruptum J.S. Schröter, 1854 † - (DENTALIIDAE) (FOSSIL)
- interruptum, Diastoma interruptum G.P. Deshayes, 1861 † - (DIASTOMATIDAE) (FOSSIL)
- interruptum, Parasolenoceras interruptum (F. Schlüter, 1872 †) - (DIPLOMOCERATIDAE) (FOSSIL)
- interruptum, Exechestoma interruptum (J.B.P.A. Lamarck, 1804 †) - (POTAMIDIDAE) (FOSSIL)
- interruptum, Eocalliostoma interruptum (Cox, 1949 †) - (PROCONULIDAE) (FOSSIL)
- interruptum angulosum, Exechestoma interruptum angulosum (J.B.P.A. Lamarck, 1804 †) - (POTAMIDIDAE) (FOSSIL)
- interruptus, Drymaeus interruptus H.B. Preston, 1909 - (BULIMULIDAE)
- interruptus, Calliostoma interruptus W. Wood, 1828 - syn of: Jujubinus interruptus (W. Wood, 1828) - (CALLIOSTOMATIDAE)
- interruptus, Amphidromus perversus interruptus (O.F. Müller, 1774) - (CAMAENIDAE)
- interruptus, Fusulus interruptus (C. Pfeiffer, 1828) - (CLAUSILIIDAE)
- interruptus, Conus interruptus W. Wood, 1828 - syn of: Stephanoconus brunneus (W. Wood, 1828) - (CONIDAE)
- interruptus, Conus interruptus W.J. Broderip & G.B. I Sowerby, 1829 - syn of: Ximeniconus ximenes (J.E. Gray, 1839) - (CONIDAE)
- interruptus, Goniatites interruptus B. Rogers, 1858 † - syn of: Manticoceras sinuosum tardum (A.H. Clarke, 1898 †) - (GONIATITIDAE) (FOSSIL)
- interruptus, Hipponix interruptus O.G. Michelotti, 1861 † - (HIPPONICIDAE) (FOSSIL)
- interruptus, Hoplites interruptus de Loriol † - syn of: Pseudosonneratia nolletiana (Lefort, 1894 †) - (HOPLITIDAE) (FOSSIL)
- interruptus, Neoguraleus interruptus A.W.B. Powell, 1942 - (MANGELIIDAE)
- interruptus, Colobostylus interruptus (J.B.P.A. Lamarck, 1822) - (POMATIIDAE)
- interruptus, Ptychatractus interruptus (Pilkington, 1804 †) - (PTYCHATRACTIDAE) (FOSSIL)
- interruptus, Scaphander interruptus W.H. Dall, 1889 - (SCAPHANDRIDAE)
- interruptus, Parviturboides interruptus (C.B. Adams, 1850) - (TORNIDAE)
- interruptus, Jujubinus interruptus (W. Wood, 1828) - (TROCHIDAE)
- interruptus, Trochus interruptus Klipstein, 1843 † - syn of: Solarioconulus nudus (Münster, 1841 †) - (TROCHIDAE) (FOSSIL)
- interruptus, Trochus interruptus W. Wood, 1828 - syn of: Jujubinus interruptus (W. Wood, 1828) - (TROCHIDAE)
- interruptus, Cantharidus interruptus W. Wood, 1828 - syn of: Jujubinus interruptus (W. Wood, 1828) - (TROCHIDAE)
- interruptus, Turbo interruptus J. Adams, 1800 - syn of: Rissoa parva (E.M. Da Costa, 1778) - (TURBINIDAE)
- interscissum, Prieserites interscissum (Uhlig, 1881 †) - (ASPIDOCERATIDAE) (FOSSIL)
- interscripta, Neritaria interscripta D. Geyer & al., 2005 † - (NERITARIIDAE) (FOSSIL)
- intersculpta, Neptunea intersculpta (G.B. III Sowerby, 1899) - (BUCCINIDAE)
- intersculpta, Neptunea intersculpta Y. Hirase, 1908 - syn of: Neptunea kuroshio K. Oyama in T. Kira, 1959 - (BUCCINIDAE)
- intersculpta, Hippocardia intersculpta Pohl, 1929 † - (HIPPOCARDIIDAE) (FOSSIL)
- intersculpta, Ziba intersculpta (G.B. II Sowerby, 1870) - (MITRIDAE)
- intersculpta, Pyrgulina intersculpta (G.B. Sowerby, 1901) - (PYRAMIDELLIDAE)
- intersculpta, Venus intersculpta G.B. III Sowerby, 1904 - syn of: Venus verrucosa C. Linnaeus, 1758 - (VENERIDAE)
- intersculpta frater, Neptunea intersculpta frater (H.A. Pilsbry, 1901) - syn of: Neptunea frater (H.A. Pilsbry, 1901) - (BUCCINIDAE)
- intersculpta pribiloffensis, Neptunea intersculpta pribiloffensis (W.H. Dall, 1919) - syn of: Neptunea pribiloffensis (W.H. Dall, 1919) - (BUCCINIDAE)
- Intersculpta-group, syn of: Genus Neptunea P.F. Röding, 1798 (BUCCINIDAE)
- intersecta, Barbatia intersecta G.P. Deshayes, 1858 † - (ARCIDAE) (FOSSIL)
- intersecta, Candidula intersecta (J.L.M. Poiret, 1801) - (HYGROMIIDAE)
- intersecta, Eulimella acicula intersecta L. de Folin - (PYRAMIDELLIDAE)
- intersecta, Obtusella intersecta (W. Wood, 1857) - (RISSOIDAE)
- intersecta, Gonospira intersecta (G.P. Deshayes, 1863) - (STREPTAXIDAE)
- intersecta, Venus intersecta G.B. II Sowerby, 1853 - syn of: Leukoma pectorina (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- intersectum, Cardium intersectum E. Forbes, 1846 - (CARDIIDAE)
- interserratus, Murexsul interserratus (G.B. II Sowerby, 1879) - (MURICIDAE)
- intersertus, Lobosphinctes intersertus Buckman † - (PERISPHINCTIDAE) (FOSSIL)
- intersessa, Noyo intersessa (B. Roth, 1987) - (CEPOLIDAE)
- intersita, Cristataria leprevieri intersita (L. Németh & M. Szekeres, 1995) - (CLAUSILIIDAE)
- intersitans, Trigonia intersitans R. Tate, 1896 † - (TRIGONIIDAE) (FOSSIL)
- interspatiosa, Chrysallida interspatiosa J. van der Linden & J. Eikenboom, 1992 - syn of: Parthenina flexuosa (T.A. de M. Monterosato, 1874) - (PYRAMIDELLIDAE)
- interspinea, Monogamus interspinea C.F. Lützen, 1976 - (EULIMIDAE)
- interstincta, Staphylaea limacina interstincta (W. Wood, 1828) - (CYPRAEIDAE)
- interstincta, Decoradrillia interstincta P.J. Fallon, 2016 - (DRILLIIDAE)
- interstincta, Lepidozona interstincta (A.A. Gould, 1852) - (ISCHNOCHITONIDAE)
- interstincta, Nassa interstincta F.P. Marrat, 1878 - syn of: Nassarius elatus (A.A. Gould, 1845) - (NASSARIIDAE)
- interstincta, Parthenina interstincta (J. Adams, 1797) - (PYRAMIDELLIDAE)
- interstincta acuta, Parthenina interstincta acuta F. Nordsieck, 1972 - (PYRAMIDELLIDAE)
- interstincta basicostata, Parthenina interstincta basicostata F. Nordsieck, 1972 - (PYRAMIDELLIDAE)
- interstincta lata, Parthenina interstincta lata J.G. Jeffreys & B.A. Marshall - (PYRAMIDELLIDAE)
- interstincta multicostata, Odostomia interstincta multicostata J.G. Jeffreys, 1884 - syn of: Parthenina multicostata (J.G. Jeffreys, 1884) - (PYRAMIDELLIDAE)
- interstincta radians, Lepidozona interstincta radians (H.A. Pilsbry, 1892) - syn of: Lepidozona radians (H.A. Pilsbry, 1892) - (ISCHNOCHITONIDAE)
- interstinctus, Lignus interstinctus A.A. Gould, 1843 - syn of: Lignus intertinctus (A.A. Gould, 1843) - (ACHATINIDAE)
- interstinctus, Conus interstinctus R.J.L. Guppy, 1866 † - (CONIDAE) (FOSSIL)
- interstinctus, Lepidozona interstinctus A.A. Gould, 1852 - syn of: Lepidozona interstincta (A.A. Gould, 1852) - (ISCHNOCHITONIDAE)
- interstinctus, Turbo interstinctus G. Montagu, 1803 - syn of: Parthenina interstincta (J. Adams, 1797) - (TURBINIDAE)
- interstitialis, Mesembrinus ghiesbreghti interstitialis E.C. Von Martens, 1893 - (BULIMULIDAE)
- interstitialis, Cardiomya interstitialis H. Takeda, 1953 - (CUSPIDARIIDAE)
- interstitialis, Vittina ziczac interstitialis (E.C. Von Martens, 1877) - (NERITIDAE)
- interstitialis, Annularisca interstitialis (J. Gundlach in L. Pfeiffer, 1859) - (POMATIIDAE)
- interstrialis, Bellerophon interstrialis F. McCoy, 1847 † - (BELLEROPHONTIDAE) (FOSSIL)
- interstrialis, Glabrocingulum interstrialis (B. Phillips, 1836 †) - (GOSSELETINIDAE) (FOSSIL)
- interstrialis, Ptychomphalus interstrialis B. Phillips, 1836 † - syn of: Glabrocingulum interstrialis (B. Phillips, 1836 †) - (PTYCHOMPHALIDAE) (FOSSIL)
- interstriata, Tornatellina interstriata R. Tate, 1870 - syn of: Lamellaxis interstriatus (R. Tate, 1870) - (ACHATINELLIDAE)
- Interstriata, syn of: Genus Albinaria W. von Vest, 1867 (CLAUSILIIDAE)
- interstriata, Eucithara interstriata (E.A. Smith, 1876) - (MANGELIIDAE)
- interstriata, Mitra interstriata G.B. II Sowerby, 1870 - syn of: Vexillum interstriatum (G.B. II Sowerby, 1870) - (MITRIDAE)
- interstriata, Pyrgulina interstriata (S.M. Souverbie, 1866) - (PYRAMIDELLIDAE)
- interstriata, Leptinaria interstriata (R. Tate) - (SUBULINIDAE)
- interstriatum, Cerithium interstriatum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- interstriatum, Vexillum interstriatum (G.B. II Sowerby, 1870) - (COSTELLARIIDAE)
- interstriatum, Dentalium interstriatum G.B. Sowerby, 1860 - syn of: Dentalium aprinum C. Linnaeus, 1767 - (DENTALIIDAE)
- interstriatum, Epitonium interstriatum (G.B. III Sowerby, 1905) - (EPITONIIDAE)
- interstriatus, Trophon interstriatus G.B. Sowerby, 1880 - syn of: Scabrotrophon fabricii (H.P.C. Møller, 1842) - (MURICIDAE)
- interstriatus, Pecten interstriatus Münster, 1841 † - syn of: Pecten nerei Münster, 1841 † - (PECTINIDAE) (FOSSIL)
- interstriatus, Pyropsis interstriatus B. Wade, 1926 † - (PERISSITYIDAE) (FOSSIL)
- interstriatus, Syrnola interstriatus B. Wade 1926 - (PYRAMIDELLIDAE)
- interstriatus, Lamellaxis interstriatus (R. Tate, 1870) - (SUBULINIDAE)
- interstriatus, Irus interstriatus (G.B. II Sowerby, 1854) - (VENERIDAE)
- interstrigata, Buchema interstrigata (Smith, 1882) - (HORAICLAVIDAE)
- interstrigata, Pleurotoma interstrigata E.A. Smith, 1882 - syn of: Buchema interstrigata (Smith, 1882) - (TURRIDAE)
- intersum, Oreohelix intersum (H. Hemphill, 1890) - (OREOHELICIDAE)
- intertaeniata, Mitra intertaeniata G.B. II Sowerby, 1874 - syn of: Vexillum intertaeniatum (G.B. II Sowerby, 1874) - (MITRIDAE)
- intertaeniatum, Vexillum intertaeniatum (G.B. II Sowerby, 1874) - (COSTELLARIIDAE)
- intertaeniatum, Costellaria intertaeniatum G.B. II Sowerby, 1874 - syn of: Vexillum intertaeniatum (G.B. II Sowerby, 1874) - (COSTELLARIIDAE)
- intertexta, Crosseola intertexta A.W.B. Powell, 1937 - (CROSSEOLIDAE)
- intertexta, Berthais intertexta J.C. Melvill & R. Standen, 1903 - syn of: Berthais egregia (A. Adams, 1863) - (VANIKORIDAE)
- intertexta, Stosicia intertexta C. Hedley, 1922 - syn of: Stosicia semitexta C. Hedley, 1899 - (ZEBINIDAE)
- intertextum, Planorbella trivolvis intertextum G.B. Sowerby, 1878 - (PLANORBIDAE)
- intertextus, Fusus intertextus G.S. Helbling, 1779 - syn of: Cumia reticulata (H.M.D. de Blainville, 1829) - (FASCIOLARIIDAE)
- intertextus, Ventridens intertextus (A. Binney, 1841) - (GASTRODONTIDAE)
- intertextus, Megalobulimus intertextus (H.A. Pilsbry, 1895) - (MEGALOBULIMIDAE)
- intertextus, Murex intertextus G.S. Helbling, 1779 - syn of: Cumia reticulata (H.M.D. de Blainville, 1829) - (MURICIDAE)
- intertextus, Strophocheilus intertextus H.A. Pilsbry, 1895 - syn of: Megalobulimus intertextus (H.A. Pilsbry, 1895) - (STROPHOCHEILIDAE)
- intertextus, Viviparus intertextus T. Say, 1829 - (VIVIPARIDAE)
- intertincta, Oliva pindarina intertincta H.F. Carpenter, 1857 - (OLIVIDAE)
- intertincta, Inquisitor intertincta (E.A. Smith, 1877) - (PSEUDOMELATOMIDAE)
- intertincta, Terebra intertincta R.B. Hinds, 1844 - (TEREBRIDAE)
- intertincta, Pleurotoma intertincta E.A. Smith, 1877 - syn of: Inquisitor intertincta (E.A. Smith, 1877) - (TURRIDAE)
- intertinctus, Lignus intertinctus (A.A. Gould, 1843) - (ACHATINIDAE)
- interupta, Holopea interupta J. Perner, 1903 † - syn of: Tachloconcha interupta (J. Perner, 1903 †) - (HOLOPEIDAE) (FOSSIL)
- interupta, Tachloconcha interupta (J. Perner, 1903 †) - (PLATYCERATIDAE) (FOSSIL)
- interupta, Stantonella interupta T.A. Conrad, 1858 † - syn of: Stantonella interrupta (T.A. Conrad, 1858 †) - (STREPSIDURIDAE) (FOSSIL)
- intervecta, Emarginula intervecta É.A.A. Locard, 1898 - syn of: Emarginula fissura (C. Linnaeus, 1758) - (FISSURELLIDAE)
- intervenens, Galadistes intervenens T. Iredale, 1938 - (CAMAENIDAE)
- interveniens, Elimia interveniens I. Lea, 1862 - (PLEUROCERIDAE)
- interventus, Unio interventus I. Lea, 1861 - syn of: Pleurobema hanleyianum I. Lea, 1852 - (UNIONIDAE)
- interviewi, Costellaria interviewi H.C. Ray, 1954 - syn of: Vexillum sculptile (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- interzonata, Chemnitzia interzonata Stoppani, 1857 † - syn of: Omphaloptycha escheri (R. Hoernes, 1856 †) - (PYRAMIDELLIDAE) (FOSSIL)
- intesi, Antalis intesi (M. Nicklés, 1979) - (DENTALIIDAE)
- intesi, Abra intesi R. von Cosel, 1995 - (SEMELIDAE)
- intestinalis, Vermetus intestinalis (J.F. Gmelin, 1791) - (VERMETIDAE)
- intestriata, Apolymetis intestriata (T. Say, 1827) - (TELLINIDAE)
- intexta, Mitrella intexta (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- intexta, Neritaria intexta Pan & G.Y. Lin, 1984 † - (NERITARIIDAE) (FOSSIL)
- intextum, Cirsotrema intextum L. Bozzetti, 2007 - (EPITONIIDAE)
- intextus, Theodoxus intextus A. Villa, 1841 - syn of: Theodoxus fluviatilis (C. Linnaeus, 1758) - (NERITIDAE)
- intextus, Pyrgiscus intextus (J. Marwick, 1931 †) - (PYRAMIDELLIDAE) (FOSSIL)
- intextus, Trochus intextus L.C. Kiener, 1850 - (TROCHIDAE)
- Intha, Genus Intha T.N. Annandale, 1922 (PLANORBIDAE)
- intha, Taia intha T.N. Annandale, 1918 - (VIVIPARIDAE)
- inti, Neodeshayesites inti (Benavides-Caceres, 1956 †) - (DESHAYESITIDAE) (FOSSIL)
- intia, Turbonilla intia P. Bartsch, 1926 - (PYRAMIDELLIDAE)
- Intihuarella, Genus Intihuarella Sánchez & Vaccari, 2003 † (INTIHUARELLIDAE) (FOSSIL)
- INTIHUARELLIDAE Sánchez & Vaccari, 2003 † - Family (BIVALVIA-HETERODONTA [Subclass]-ARCHIHETERODONTA [Infraclass]-ACTINODONTIDA [Order]-ANODONTOPSOIDEA [Superfamily]) (FOSSIL)
- intinctum, Buccinum intinctum L.A. Reeve, 1846 - syn of: Burnupena papyracea (J.G. Bruguière, 1789) - (BUCCINIDAE)
- Intistoma, Genus Intistoma DeVries , 2007 † (TROCHIDAE) (FOSSIL)
- Intoceras, Genus Intoceras Kusina, 1971 † (INTOCERATIDAE) (FOSSIL)
- INTOCERATIDAE Kusina, 1971 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-PERICYCLOIDEA [Superfamily]) (FOSSIL)
- Intodesma, syn of: Genus Intomodesma Popov, 1958 † (ATOMODESMATIDAE) (FOSSIL)
- Intomodesma, Genus Intomodesma Popov, 1958 † (ATOMODESMATIDAE) (FOSSIL)
- intonsa, Aegista intonsa H.A. Pilsbry & Y. Hirase, 1902 - (BRADYBAENIDAE)
- intonsa, Patula intonsa H.A. Pilsbry, 1891 - syn of: Setidiscus intonsa (H.A. Pilsbry, 1891) - (DISCIDAE)
- intonsa, Setidiscus intonsa (H.A. Pilsbry, 1891) - (THYSANOPHORIDAE)
- intornatus, Intornites intornatus (McLearn, 1946 †) - (LONGOBARDITIDAE) (FOSSIL)
- Intornites, Genus Intornites Asserto , 1966 † (LONGOBARDITIDAE) (FOSSIL)
- intorta, Simobelus intorta Saks & Nalnyaeva, 1966 † - (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- intorta, Genota intorta (G.B. Brocchi, 1814 †) - (BORSONIIDAE) (FOSSIL)
- intorta, Calocochlia intorta G.B. I Sowerby, 1840 - (BRADYBAENIDAE)
- intorta, Olivella intorta P.P. Carpenter, 1857 - syn of: Olivella pedroana (T.A. Conrad, 1856) - (OLIVELLIDAE)
- intorta, Patella intorta T. Pennant, 1777 - syn of: Patella pellucida C. Linnaeus, 1758 - (PATELLIDAE)
- intorta, Pleurotoma intorta G.B. Brocchi, 1814 † - syn of: Genota intorta (G.B. Brocchi, 1814 †) - (TURRIDAE) (FOSSIL)
- intorta aeruginosa, Calocochlia intorta aeruginosa (L. Pfeiffer) - (BRADYBAENIDAE)
- intortella, Turricula intortella A.E.M. Cossmann, 1898 † - (CLAVATULIDAE) (FOSSIL)
- Intortia, syn of: Genus Lissotesta T. Iredale, 1915 (SEGUENZIOIDEA (UNASSIGNED))
- intortum, Caecum intortum A. Vannozzi, M. Pizzini & B.K. Raines, 2015 - (CAECIDAE)
- intortum, Orygoceras intortum Š. Brusina, 1902 † - (HYDROBIIDAE) (FOSSIL)
- intortus, Lanistes intortus E.C. Von Martens, 1870 - (AMPULLARIIDAE)
- intortus, Nodulus intortus J.G. Jeffreys, 1884 - syn of: Nodulus contortus intortus T.A. de M. Monterosato, 1878 - (ANABATHRIDAE)
- intortus, Nodulus contortus intortus T.A. de M. Monterosato, 1878 - (ANABATHRIDAE)
- intortus, Capulus intortus J.B.P.A. Lamarck, 1822 - syn of: Hipponix incurvus (J.F. Gmelin, 1791) - (CAPULIDAE)
- intortus, Streptochetus intortus (J.B.P.A. Lamarck, 1803 †) - (FASCIOLARIIDAE) (FOSSIL)
- intortus, Hipponix intortus J.B.P.A. Lamarck, 1822 - syn of: Capulus incurvatus (J.F. Gmelin, 1791 †) - (HIPPONICIDAE)
- intortus, Ecculiomphalus intortus Billings, 1861 † - (OPHILETIDAE) (FOSSIL)
- intortus, Petaloconchus intortus (J.B.P.A. Lamarck, 1818 †) - (VERMETIDAE) (FOSSIL)
- intortus, Vermetus intortus H.C. Weinkauff, 1868 - syn of: Petaloconchus glomeratus (C. Linnaeus, 1758) - (VERMETIDAE)
- intortus colligata, Vermetus intortus colligata A.E.M. Cossmann & M.A. Peyrot, 1922 † - syn of: Petaloconchus glomeratus colligata A.E.M. Cossmann & M.A. Peyrot, 1922 † - (VERMETIDAE) (FOSSIL)
- intortus solutella, Petaloconchus intortus solutella F. Sacco, 1896 † - syn of: Petaloconchus intortus (J.B.P.A. Lamarck, 1818 †) - (VERMETIDAE) (FOSSIL)
- intortus taurinensis, Vermetus intortus taurinensis F. Sacco, 1896 † - syn of: Petaloconchus glomeratus taurinensis F. Sacco, 1896 † - (VERMETIDAE) (FOSSIL)
- intortus woodi, Vermetus intortus woodi F. Sacco, 1896 † - syn of: Petaloconchus glomeratus woodi F. Sacco, 1896 † - (VERMETIDAE) (FOSSIL)
- intracallosus, Potamolithus intracallosus H.A. Pilsbry, 1911 - (LITHOGLYPHIDAE)
- intracapricornus, Androgynoceras intracapricornus F.A. von Quenstedt, 1885 † - (LIPAROCERATIDAE) (FOSSIL)
- intracarpaticus, Theodoxus intracarpaticus E. Jekelius, 1944 † - (NERITIDAE) (FOSSIL)
- intracostata, Clymenia intracostata Frech, 1897 † - syn of: Platyclymenia intracostata (Frech, 1897 †) - (CLYMENIIDAE) (FOSSIL)
- intracostata, Platyclymenia intracostata (Frech, 1897 †) - (PLATYCLYMENIIDAE) (FOSSIL)
- intracostata plana, Platyclymenia intracostata plana Pajchlowa, 1972 † - (PLATYCLYMENIIDAE) (FOSSIL)
- intracostatum, Girtyoceras intracostatum Knopp, 1931 † - (GIRTYOCERATIDAE) (FOSSIL)
- intracrassus, Polinices intracrassus Finlay, 1924 † - (NATICIDAE) (FOSSIL)
- intracta, Lyonsia intracta R. Sturany, 1899 - syn of: Poromya intracta (R. Sturany, 1899) - (LYONSIIDAE)
- intracta, Poromya intracta (R. Sturany, 1899) - (POROMYIDAE)
- intradentata, Dyakia intradentata H.H. Godwin-Austen, 1891 - (DYAKIIDAE)
- intradentatum, Cerithium intradentatum (G.P. Deshayes, 1864 †) - (CERITHIIDAE) (FOSSIL)
- intraevolutus, Stenoglaphyrites intraevolutus Ruzhencev & Bogoslovskaya, 1978 † - (STENOGLAPHYRITIDAE) (FOSSIL)
- intrafuniculata, Puposyrnola intrafuniculata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- intraliciata, Syrnola intraliciata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- Intranodites, Genus Intranodites Jeannet , 1951 † (ASPIDOCERATIDAE) (FOSSIL)
- intranodosa, Pseudamnicola intranodosa H. Schütt & R. Sesen, 1993 - (HYDROBIIDAE)
- intraornatum, Solarium intraornatum C.A. White, 1887 - syn of: Architectonica nobilis P.F. Röding, 1798 - (ARCHITECTONICIDAE)
- intrapictus, Notarchus intrapictus T.D.A. Cockerell, 1893 - syn of: Bursatella leachii H.M.D. de Blainville, 1817 - (APLYSIIDAE)
- intrapictus, Mesembrinus intrapictus H.A. Pilsbry, 1930 - (BULIMULIDAE)
- intrapunctatum, Pseudouhligella intrapunctatum Keupp, 2008 † - (DESMOCERATIDAE) (FOSSIL)
- intratesta, Crepidula intratesta L.R.L. Simone, 2006 - (CALYPTRAEIDAE)
- intraurea, Scutellastra intraurea T. Iredale, 1929 - syn of: Scutellastra flexuosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (PATELLIDAE)
- intrepida, Astartila intrepida J.B.M. Dana, 1847 † - (MEGADESMIDAE) (FOSSIL)
- intricata, Bailya intricata (W.H. Dall, 1884) - (BUCCINIDAE)
- intricata, Ondulopsis intricata A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- intricata, Chama intricata G.P. Deshayes, 1858 † - (CHAMIDAE) (FOSSIL)
- intricata, Bulgarica bulgariensis intricata (A. Mousson, 1859) - (CLAUSILIIDAE)
- intricata, Retizafra intricata (C. Hedley, 1912) - (COLUMBELLIDAE)
- intricata, Pyrene intricata C. Hedley, 1912 - syn of: Retizafra intricata (C. Hedley, 1912) - (COLUMBELLIDAE)
- intricata, Spiroscala intricata Batten, 1966 † - (GOSSELETINIDAE) (FOSSIL)
- intricata, Euspira intricata (E. Donovan, 1804) - (NATICIDAE)
- intricata, Natica intricata E. Donovan, 1804 - syn of: Euspira intricata (E. Donovan, 1804) - (NATICIDAE)
- intricata, Nerita intricata E. Donovan, 1804 - syn of: Euspira intricata (E. Donovan, 1804) - (NERITIDAE)
- intricata, Glyptoleda intricata C.O. Waterhouse, 1964 † - (NUCULANIDAE) (FOSSIL)
- intricata, Oliva intricata P. Dautzenberg, 1927 - syn of: Oliva mantichora P.L. Duclos, 1835 - (OLIVIDAE)
- intricata, Testudovolva intricata C.N. Cate, 1973 - (OVULIDAE)
- intricata, Philine intricata T.A. de M. Monterosato, 1884 - (PHILINIDAE)
- intricata, Ashmunella intricata H.A. Pilsbry, 1948 - (POLYGYRIDAE)
- intricata, Isognomon intricata T. Iredale, 1939 - syn of: Isognomon legumen J.F. Gmelin, 1790 - (PTERIIDAE)
- intricata, Oxyloma intricata M. Paulucci, 1882 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- intricata, Turris intricata A.W.B. Powell, 1964 - (TURRIDAE)
- intricata, Meretrix intricata P. Dautzenberg, 1907 - syn of: Hyphantosoma intricatum (P. Dautzenberg, 1907) - (VENERIDAE)
- intricata, Pitar intricata P. Dautzenberg, 1907 - syn of: Hyphantosoma intricatum (P. Dautzenberg, 1907) - (VENERIDAE)
- intricata debilitata, Isognomon intricata debilitata T. Iredale, 1939 - syn of: Isognomon legumen J.F. Gmelin, 1790 - (PTERIIDAE)
- intricata similis, Euspira intricata similis (T.A. de M. Monterosato, 1884) - (NATICIDAE)
- intricatoides, Natica intricatoides J.G. Hidalgo, 1873 - syn of: Cochlis vittata (J.F. Gmelin, 1791) - (NATICIDAE)
- intricatum, Discomelon intricatum T. Iredale, 1938 - (CAMAENIDAE)
- intricatum, Labyrinthoceras intricatum Buckman † - (SPHAEROCERATIDAE) (FOSSIL)
- intricatum, Hyphantosoma intricatum (P. Dautzenberg, 1907) - (VENERIDAE)
- intricatus, Euchelus intricatus (A.A. Gould, 1849) - (CHILODONTIDAE)
- intricatus, Pitar intricatus P. Dautzenberg, 1907 - syn of: Hyphantosoma intricatum (P. Dautzenberg, 1907) - (VENERIDAE)
- introducta, Xerosecta introducta A. Villa & J. Villa, 1841 - syn of: Xeromagna cespitum (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- introferens, Helix introferens T.B. Bland, 1860 - syn of: Triodopsis fallax (T. Say, 1825) - (HELICIDAE)
- introradiatus, Donax introradiatus L.A. Reeve, 1855 - (DONACIDAE)
- introrsus, Perotrochus introrsus Böhm, 1895 † - syn of: Codinella mammiformis (E.A.L. Kittl, 1894 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- introspecta, Moerchia introspecta C. Hedley, 1907 - (PYRAMIDELLIDAE)
- introspectus, Joculator introspectus B.C. Cotton, 1951 - (CERITHIOPSIDAE)
- intrudens, Reticunassa intrudens Galindo, Kool & Dekker, 2017 - (NASSARIIDAE)
- intruderi, Cymbiola intruderi G.T. Poppe, 1985 - (VOLUTIDAE)
- intruderi rowseorum, Cymbiola intruderi rowseorum P. Bail & A. Limpus, 2015 - (VOLUTIDAE)
- intrusa, Granaria intrusa (Slavík, 1869 †) - (CHONDRINIDAE) (FOSSIL)
- intrusa, Gulella intrusa B. Verdcourt, 1956 - (STREPTAXIDAE)
- intsulaevis, Atreta intsulaevis Tashiro, 1978 † - (DIMYIDAE) (FOSSIL)
- intumescens, Ammonites intumescens A.H.E. Beyrich, 1837 † - syn of: Manticoceras intumescens (A.H.E. Beyrich, 1837 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- intumescens, Paracrioceras intumescens (A. von Koenen, 1902 †) - (ANCYLOCERATIDAE) (FOSSIL)
- intumescens, Ariophanta intumescens (W.T. Blanford, 1866) - (ARIOPHANTIDAE)
- intumescens, Crioceras intumescens A. von Koenen, 1902 † - syn of: Paracrioceras intumescens (A. von Koenen, 1902 †) - (CRIOCERATITIDAE) (FOSSIL)
- intumescens, Procymatoceras intumescens (L. Waagen, 1873 †) - (CYMATOCERATIDAE) (FOSSIL)
- intumescens, Chondrulopsina intumescens (E.C. Von Martens, 1874) - (ENIDAE)
- intumescens, Manticoceras intumescens (A.H.E. Beyrich, 1837 †) - (GEPHUROCERATIDAE) (FOSSIL)
- intumescens, Gephyroceras intumescens † - syn of: Bellerophon macrostoma A. Römer, 1843 † - (GEPHUROCERATIDAE) (FOSSIL)
- intumescens, Goniatites intumescens A.H.E. Beyrich, 1837 † - syn of: Manticoceras intumescens (A.H.E. Beyrich, 1837 †) - (GONIATITIDAE) (FOSSIL)
- intumescens, Hildoceras intumescens Fucini, 1901 † - syn of: Fuciniceras lavinianum (Fucini, 1900 †) - (HILDOCERATIDAE) (FOSSIL)
- intumescens, Loxonema intumescens Lindström, 1884 † - (LOXONEMATIDAE) (FOSSIL)
- intumescens, Marginella intumescens A. von Koenen, 1865 † - (MARGINELLIDAE) (FOSSIL)
- intumescens, Puposyrnola intumescens (A. von Koenen, 1891 †) - (PYRAMIDELLIDAE) (FOSSIL)
- intumescens, Chrysallida intumescens C.F.C. Schander, 1994 - (PYRAMIDELLIDAE)
- intumescens, Syrnola intumescens A. von Koenen, 1891 † - syn of: Puposyrnola intumescens (A. von Koenen, 1891 †) - (PYRAMIDELLIDAE) (FOSSIL)
- intumescens, Cyclina intumescens A. Römer, 1861 - syn of: Cyclina sinensis (J.F. Gmelin, 1791) - (VENERIDAE)
- intumescens acutus, Goniatites intumescens acutus C.L.F. von Sandberger, 1850 † - syn of: Crickites acutus (C.L.F. von Sandberger, 1850 †) - (GONIATITIDAE) (FOSSIL)
- intumescens convexus, Goniatites intumescens convexus C.L.F. von Sandberger, 1851 † - syn of: Manticoceras intumescens (A.H.E. Beyrich, 1837 †) - (GONIATITIDAE) (FOSSIL)
- intumescens fedtschenkoi, Buliminus intumescens fedtschenkoi C.M.F. Ancey, 1886 - syn of: Chondrulopsina fedtschenkoi (C.M.F. Ancey, 1886) - (ENIDAE)
- intumescens inermis, Buliminus intumescens inermis C.M.F. Ancey, 1893 - syn of: Chondrulopsina fedtschenkoi (C.M.F. Ancey, 1886) - (ENIDAE)
- intumescens intermedium, Goniatites intumescens intermedium C.L.F. von Sandberger, 1851 † - syn of: Manticoceras intermedium (C.L.F. von Sandberger, 1851 †) - (GONIATITIDAE) (FOSSIL)
- intumescens latisellatum, Manticoceras intumescens latisellatum Janischewsky, 1926 † - syn of: Manticoceras latisellatum (Janischewsky, 1926 †) - (GEPHUROCERATIDAE) (FOSSIL)
- intumescens sultanus, Buliminus intumescens sultanus O.W. Von Rosen, 1901 - syn of: Chondrulopsina intumescens (E.C. Von Martens, 1874) - (ENIDAE)
- intumescyra, Terebra intumescyra S.F.B. de Lima, D. de Oliveira Tenório & J.C.N. Barros, 2007 - (TEREBRIDAE)
- inturbida, Puposyrnola inturbida (M. Yokoyama, 1927) - (PYRAMIDELLIDAE)
- intuscarinata, Ellobium intuscarinata A. Mousson, 1870 - (ELLOBIIDAE)
- intuscoarctata, Centralia intuscoarctata (C. de la Torre, 1911) - (UROCOPTIDAE)
- intuscostata, Chaenaxis intuscostata W.F. Clapp - syn of: Chaenaxis tuba H.A. Pilsbry & J.H. Ferriss, 1906 - (GASTROCOPTIDAE)
- intuscostata brevicostata, Chaenaxis intuscostata brevicostata H.A. Pilsbry, 1916 - syn of: Chaenaxis tuba H.A. Pilsbry & J.H. Ferriss, 1906 - (GASTROCOPTIDAE)
- intuscostatum, Pecten intuscostatum M. Yokoyama, 1920 - syn of: Parvamussium intuscostatum (M. Yokoyama, 1920) - (PECTINIDAE)
- intuscostatum, Parvamussium intuscostatum (M. Yokoyama, 1920) - (PROPEAMUSSIIDAE)
- intuscrenata, Plicatula intuscrenata A.E.M. Cossmann, 1887 † - (PLICATULIDAE) (FOSSIL)
- intusdentata, Harpulina intusdentata (A.E.M. Cossmann, 1889 †) - (VOLUTIDAE) (FOSSIL)
- intusfalcata, Planostemma intusfalcata (C. de la Torre & H.F. Ramsden, 1909) - (UROCOPTIDAE)
- intusfalcata hugesi, Planostemma intusfalcata hugesi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- intusgranosa, Martesia intusgranosa Is. Taki & T. Habe, 1945 - syn of: Martesia striata (C. Linnaeus, 1758) - (PHOLADIDAE)
- intuslabiatus, Arcestes intuslabiatus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- intuslaeve, Parvamussium intuslaeve H.H. Dijkstra & S. Gofas, 2004 - (PROPEAMUSSIIDAE)
- intuslirata, Perrona aculeiformis intuslirata H. Strebel, 1914 - (CLAVATULIDAE)
- intuslirata, Turbonilla intuslirata L. de Folin, 1879 - (PYRAMIDELLIDAE)
- intusmalleata, Pleurostemma intusmalleata (J. Gundlach in L. Pfeiffer, 1855) - (UROCOPTIDAE)
- intusmalleata crassa, Pleurostemma intusmalleata crassa C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- intuspicta, Mactra intuspicta G.P. Deshayes, 1855 - syn of: Mactra cygnus J.F. Gmelin, 1791 - (MACTRIDAE)
- intusplicata, Codringtonia intusplicata (L. Pfeiffer, 1881) - (HELICIDAE)
- Intusplicata, syn of: Genus Alcadia J.E. Gray, 1840 (HELICINIDAE)
- intusplicata, Parvilucina intusplicata (A.E.M. Cossmann, 1887 †) - (LUCINIDAE) (FOSSIL)
- intusplicata arcadica, Codringtonia intusplicata arcadica (W. Kobelt, 1902) - (HELICIDAE)
- intusplicata cyllenica, Codringtonia intusplicata cyllenica (W. Kobelt, 1902) - (HELICIDAE)
- intusplicatus, Soleniscus intusplicatus (C. Gemmellaro, 1889 †) - (SOLENISCIDAE) (FOSSIL)
- intusplicatus, Macrocheilus intusplicatus C. Gemmellaro, 1889 † - syn of: Soleniscus intusplicatus (C. Gemmellaro, 1889 †) - (SOLENISCIDAE) (FOSSIL)
- intuspunctata, Venus intuspunctata H.E. Anton, 1838 - syn of: Polititapes aureus (J.F. Gmelin, 1791) - (VENERIDAE)
- intuspurpurea, Siliqua intuspurpurea H.A. Pilsbry, 1905 - syn of: Siliqua alta (W.J. Broderip & G.B. I Sowerby, 1829) - (PHARIDAE)
- intusstriata, Atreta intusstriata (Emmrich, 1853 †) - (DIMYIDAE) (FOSSIL)
- intusstriata, Ostrea intusstriata Emmrich, 1853 † - syn of: Atreta intusstriata (Emmrich, 1853 †) - (OSTREIDAE) (FOSSIL)
- intustructa, Stigmatica paestana intustructa (C.A. Westerlund, 1883) - (CLAUSILIIDAE)
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