- srakaewensis, Gyliotrachela srakaewensis P. Dumrongrojwattana, 2006 - (HYPSELOSTOMATIDAE)
- srakeoensis, Anauchen srakeoensis S. Panha & J.B. Burch, 2004 - (HYPSELOSTOMATIDAE)
- srbici, Fossarulus srbici Miloševic, 1972 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- srednogorica, Bythinella srednogorica P. Glöer & D.G. Georgiev, 2009 - (BYTHINELLIDAE)
- sretenskiensis, Anisus sretenskiensis L.A. Prozorova & Y.I. Starobogatov, 1997 - (PLANORBIDAE)
- sriabbasae, Amphidromus sriabbasae Thach, 2017 - (CAMAENIDAE)
- srichang, Gyliotrachela srichang (S. Panha & J.B. Burch, 2002) - (HYPSELOSTOMATIDAE)
- srirachaensis, Gyliotrachela srirachaensis Pahna, 2004 - (HYPSELOSTOMATIDAE)
- ssorensis, Cincinna ssorensis W. Dybowski, 1886 - syn of: Cincinna sorensis (W. Dybowski, 1886) - (VALVATIDAE)
- ssorensis abbreviata, Cincinna ssorensis abbreviata W.A. Lindholm, 1909 - syn of: Cincinna sorensis abbreviata W.A. Lindholm, 1909 - (VALVATIDAE)
- staadti, Maussenetia staadti A.E.M. Cossmann, 1904 † - (APORRHAIDAE) (FOSSIL)
- staadti, Rissoina staadti A.E.M. Cossmann, 1907 † - (RISSOINIDAE) (FOSSIL)
- staadti, Timoclea staadti E. Fischer-Piette & D. Vukadinovic, 1977 - syn of: Timoclea cochinensis (G.B. II Sowerby, 1853) - (VENERIDAE)
- Staadtia, Genus Staadtia W.R. Schlickum, 1961 (HYDROBIIDAE)
- Staadtiellopsis, Genus Staadtiellopsis Schlickum, 1968 † (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- Staala, Genus Staala Ovaska, L.F. Chichester & Sopuck, 2010 (ARIONIDAE)
- Stabilea, Subgenus Cochlodina (Stabilea) N. Pini, 1876 (CLAUSILIIDAE)
- Stabilea, syn of: Genus Cochlodina A.E.J. Férussac, 1821 (CLAUSILIIDAE)
- Stabilea, syn of: Genus Limax C. Linnaeus, 1758 (LIMACIDAE)
- stabilei, Trachynerita stabilei J. Von Hauer, 1857 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- stabilei, Abida stabilei E.C. Von Martens, 1865 - (CHONDRINIDAE)
- stabilei, Dalfreddia porroi stabilei (N. Pini, 1884) - (COCHLOSTOMATIDAE)
- stabilei, Helix stabilei M. Paulucci, 1880 - syn of: Faustina illyrica (G. Stabile, 1864) - (HELICIDAE)
- stabilei, Anodonta stabilei H. Drouët, 1883 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- stabilei, Phenacolimax stabilei M. Lessona, 1880 - (VITRINIDAE)
- stabilei, Retinella stabilei C. Pollonera, 1886 - (ZONITIDAE)
- stabilei anceyi, Abida stabilei anceyi (P. Fagot, 1881) - (CHONDRINIDAE)
- stabileii, Pisidium stabileii T. Prime, 1870 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- stabili, Abida stabili (E.C. Von Martens, 1865) - (CHONDRINIDAE)
- Stabilima, Subgenus Limatula (Stabilima) Iredale, 1939 † (LIMIDAE) (FOSSIL)
- Stabilima, syn of: Genus Limatula S.V. Wood, 1839 (LIMIDAE)
- stabilis, Canistrum stabilis (G.B. I Sowerby, 1840) - (BRADYBAENIDAE)
- stabilis, Pseudalinda stabilis (L. Pfeiffer, 1847) - (CLAUSILIIDAE)
- stabilis, Pseudonapaeus stabilis A.A. Schileyko, 1984 - (ENIDAE)
- stabilis, Hypseloconus stabilis Berkey, 1898 † - syn of: Kirengella stabilis (Berkey, 1898 †) - (HYPSELOCONIDAE) (FOSSIL)
- stabilis, Kirengella stabilis (Berkey, 1898 †) - (KIRENGELLIDAE) (FOSSIL)
- stabilis, Gyraulus stabilis T. Iredale, 1943 - (PLANORBIDAE)
- stabilis, Pleurobema stabilis (I. Lea, 1861) - (UNIONIDAE)
- stabilis, Dosinia stabilis (T. Iredale, 1929) - (VENERIDAE)
- stabilis chatkalicus, Pseudonapaeus stabilis chatkalicus A.G. Kuznetsov, 1999 - (ENIDAE)
- staceyae, Catoraphiceras staceyae Hook & Flower, 1977 † - (PROTOCYCLOCERATIDAE) (FOSSIL)
- stachei, Conus stachei R. Hoernes & M. Auinger, 1879 † - (CONIDAE) (FOSSIL)
- stachei, Waagenoceras stachei C. Gemmellaro, 1887 † - (CYCLOLOBIDAE) (FOSSIL)
- stachei, Goniatites stachei Frech, 1887 † - syn of: Tornoceras stachei (Frech, 1887 †) - (GONIATITIDAE) (FOSSIL)
- stachei, Ptychostoma stachei (E.A.L. Kittl, 1892 †) - (PROSTYLIFERIDAE) (FOSSIL)
- stachei, Scalaetrochus stachei (Spitz, 1907 †) - (PSEUDOPHORIDAE) (FOSSIL)
- stachei, Claraia stachei Bittner, 1901 † - (PTERINOPECTINIDAE) (FOSSIL)
- stachei, Ptychites stachei (Mojsisovics, 1882 †) - (PTYCHITIDAE) (FOSSIL)
- stachei, Fossarulus stachei M. von Neumayr, 1869 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- stachei, Tornoceras stachei (Frech, 1887 †) - (TORNOCERATIDAE) (FOSSIL)
- stachei, Trochus stachei Spitz, 1907 † - syn of: Scalaetrochus stachei (Spitz, 1907 †) - (TROCHIDAE) (FOSSIL)
- Stacheites, Genus Stacheites Kittl , 1903 † (DINARITIDAE) (FOSSIL)
- Stachella, Genus Stachella Waagen, 1880 † (EUPHEMITIDAE) (FOSSIL)
- Stacheoceras, Genus Stacheoceras Gemmellaro , 1887 † (NEOSTACHEOCERATIDAE) (FOSSIL)
- stadiale, Semicassis pyrum stadiale (C. Hedley, 1914) - (CASSIDAE)
- stadialis, Filodrillia stadialis C. Hedley, 1922 - (BORSONIIDAE)
- stadialis, Mitra stadialis C. Hedley, 1911 - syn of: Microvoluta stadialis (C. Hedley, 1911) - (MITRIDAE)
- stadialis, Microvoluta stadialis (C. Hedley, 1911) - (VOLUTOMITRIDAE)
- stadtlaenderi, Paracrioceras stadtlaenderi (Muller, 1892 †) - (ANCYLOCERATIDAE) (FOSSIL)
- stadtlaenderi, Crioceras stadtlaenderi Muller, 1892 † - syn of: Paracrioceras stadtlaenderi (Muller, 1892 †) - (CRIOCERATITIDAE) (FOSSIL)
- staechadicus, Oxychilus staechadicus J.R. Bourguignat, 1877 - syn of: Oxychilus draparnaudi (H.H. Beck, 1837) - (OXYCHILIDAE)
- staeschei, Kolymonectes staeschei Polubotko, 1968 † - (ENTOLIOIDIDAE) (FOSSIL)
- staffelbergense, Paracenoceras staffelbergense Kuhn, 1936 † - (PARACENOCERATIDAE) (FOSSIL)
- staffelbergensis, Tuberotropis staffelbergensis (Kuhn, 1938 †) - (EUCYCLIDAE) (FOSSIL)
- Staffinella, Genus Staffinella Casey, 1952 † (ARCTICIDAE) (FOSSIL)
- staffinense, Longaeviceras staffinense E.R. Sykes, 1975 † - (CADOCERATIDAE) (FOSSIL)
- staffinensis, Staffinella staffinensis (Anderson & Cox 1948) † - (ARCTICIDAE) (FOSSIL)
- staffinensis, Astarte staffinensis Anderson & Cox 1948 † - (ASTARTIDAE) (FOSSIL)
- staffinensis, Quenstedtia staffinensis (E. Forbes, 1851 †) - (QUENSTEDTIIDAE) (FOSSIL)
- Staffinia, Genus Staffinia Anderson & Cox, 1948 † (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Staffites, Subgenus Cheiloceras (Staffites) Sandberger & Sandberger, 1850 † (CHEILOCERATIDAE) (FOSSIL)
- Staffola, Genus Staffola W.H. Dall, 1905 (PROSERPINELLIDAE)
- staffordae, Cyrtodonta staffordae Pojeta & Gilbert-Tomlinson, 1977 † - (CYRTODONTIDAE) (FOSSIL)
- staffordensis, Inglisella staffordensis P.A. Maxwell, 1992 † - (CANCELLARIIDAE) (FOSSIL)
- staffordi, Augustaceras staffordi Bucher, 1988 † - (BALATONITIDAE) (FOSSIL)
- staffordi, Physa staffordi I. Lea, 1864 - syn of: Physella gyrina saffordi (I. Lea, 1864) - (PHYSIDAE)
- staffordi, Staffordia staffordi H.H. Godwin-Austen - (STAFFORDIIDAE)
- Staffordia, Genus Staffordia H.H. Godwin-Austen, 1907 (STAFFORDIIDAE)
- STAFFORDIIDAE Thiele, 1931 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-STAFFORDIOIDEA [Superfamily])
- stageri, Helminthoglypta stageri G. Willett, 1938 - (HELMINTHOGLYPTIDAE)
- staggi, Myophoria staggi Skwarko, 1967 † - (MYOPHORIIDAE) (FOSSIL)
- stagnale, Ellobium stagnale D'Orbigny, 1835 - (ELLOBIIDAE)
- Stagnaliana, syn of: Genus Lymnaea J.B.P.A. Lamarck, 1801 (LYMNAEIDAE)
- stagnalis, Heleobia stagnalis C. Linnaeus, 1767 - syn of: Semisalsa stagnorum (J.F. Gmelin, 1791) - (COCHLIOPIDAE)
- stagnalis, Hydrobia stagnalis J. Baster, 1765 - syn of: Semisalsa stagnorum (J.F. Gmelin, 1791) - (HYDROBIIDAE)
- stagnalis, Lymnaea stagnalis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- stagnalis, Mytilus stagnalis J.F. Gmelin, 1791 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (MYTILIDAE)
- stagnalis, Oxyloma stagnalis J. Gassies, 1867 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- stagnalis, Anodonta stagnalis J.F. Gmelin, 1791 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- stagnalis, Vertigo eogia stagnalis J.T. Kuroda, 1941 - (VERTIGINIDAE)
- stagnalis ampliata, Lymnaea stagnalis ampliata D. Geyer, 1927 - syn of: Lymnaea fragilis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- stagnalis appressa, Lymnaea stagnalis appressa T. Say, 1821 - (LYMNAEIDAE)
- stagnalis capellinii, Hydrobia stagnalis capellinii Gillet, 1963 † - syn of: Semisalsa stagnorum capellinii (Gillet, 1963 †) - (HYDROBIIDAE) (FOSSIL)
- stagnalis jugularis, Lymnaea stagnalis jugularis T. Say, 1817 - (LYMNAEIDAE)
- stagnalis producta, Lymnaea stagnalis producta J.A.J. Colbeau, 1859 - syn of: Lymnaea fragilis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- stagnalis sanctaemariae, Lymnaea stagnalis sanctaemariae B. Walker, 1892 - (LYMNAEIDAE)
- stagnalis sarmatica, Lymnaea stagnalis sarmatica Kókay, 2006 † - (LYMNAEIDAE) (FOSSIL)
- stagnalis subulata, Lymnaea stagnalis subulata C.A. Westerlund, 1873 - syn of: Lymnaea fragilis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- stagnalis subulata, Lymnaea stagnalis subulata D. Geyer, 1927 - syn of: Lymnaea fragilis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- stagnalis vulgaris, Lymnaea stagnalis vulgaris C.A. Westerlund, 1885 - syn of: Lymnaea fragilis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- Stagnicola, Genus Stagnicola W.E. Leach in J.G. Jeffreys, 1830 (LYMNAEIDAE)
- stagnicola, Planorbis stagnicola P.M.A. Morelet, 1851 - syn of: Biomphalaria helophila (A.V.M.D. D'Orbigny, 1835) - (PLANORBIDAE)
- stagnicola, Cyclas stagnicola J.B.P.A. Lamarck, 1818 - syn of: Sphaerium cornea (C. Linnaeus, 1767) - (SPHAERIIDAE)
- stagnina, Cerithium vulgatum stagnina T.A. de M. Monterosato, 1910 - (CERITHIIDAE)
- stagnina, Monacha stagnina J.R. Bourguignat in É.A.A. Locard, 1894 - syn of: Monacha cartusiana (O.F. Müller, 1774) - (HYGROMIIDAE)
- stagnorum, Semisalsa stagnorum (J.F. Gmelin, 1791) - (COCHLIOPIDAE)
- stagnorum, Hydrobia stagnorum J.F. Gmelin, 1791 - syn of: Semisalsa stagnorum (J.F. Gmelin, 1791) - (HYDROBIIDAE)
- stagnorum, Coelatura stagnorum (P. Dautzenberg, 1890) - (UNIONIDAE)
- stagnorum bomae, Coelatura stagnorum bomae H.A. Pilsbry & J.C. Bequaert, 1927 - syn of: Coelatura stagnorum (P. Dautzenberg, 1890) - (UNIONIDAE)
- stagnorum capellinii, Semisalsa stagnorum capellinii (Gillet, 1963 †) - (COCHLIOPIDAE) (FOSSIL)
- Stagonites, Genus Stagonites Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- stahleckeri, Crioceratites stahleckeri (Sarkar, 1955 †) - (CRIOCERATITIDAE) (FOSSIL)
- stahleckeri, Neololigosepia stahleckeri Reitner & Engeser, 1982 † - (TEUTHIDA (UNASSIGNED)) (FOSSIL)
- stahli, Acanthopleuroceras stahli (Oppel, 1856 †) - (POLYMORPHITIDAE) (FOSSIL)
- Stahlia, Genus Stahlia Fischer, 1915 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- stahliforme, Tropidoceras stahliforme Rakús & Guex, 2002 † - (POLYMORPHITIDAE) (FOSSIL)
- stahlschmidti, Profundiconus stahlschmidti M.J. Tenorio & J.K. Tucker, 2014 - (CONIDAE)
- stahlschmidti, Syntomodrillia stahlschmidti P.J. Fallon, 2016 - (DRILLIIDAE)
- stahlschmidti, Bellaspira stahlschmidti P.J. Fallon, 2016 - (DRILLIIDAE)
- stainbrooki, Costamanticoceras stainbrooki (Miller, 1936 †) - (GEPHUROCERATIDAE) (FOSSIL)
- stainbrooki, Ponticeras stainbrooki Miller, 1936 † - syn of: Costamanticoceras stainbrooki (Miller, 1936 †) - (PONTICERATIDAE) (FOSSIL)
- stainbrooki, Preshumardites stainbrooki Plummer & P.H. Scott, 1937 † - (SHUMARDITIDAE) (FOSSIL)
- stainforthi, Leptopoma stainforthi (G.B. Sowerby, 1842) - (CYCLOPHORIDAE)
- stainforthi, Hexaplex stainforthi (L.A. Reeve, 1843) - (MURICIDAE)
- stainforthii, Conus stainforthii L.A. Reeve, 1843 - syn of: Fulgiconus moluccensis (H.C. Küster, 1838) - (CONIDAE)
- stainforthii, Vexillum stainforthii (L.A. Reeve, 1842) - (COSTELLARIIDAE)
- stainforthii, Oliva atalina stainforthii L.A. Reeve, 1850 - (OLIVIDAE)
- staitorum, Pararaconus staitorum Bengtson & al., 1990 † - (HELCIONELLIDAE) (FOSSIL)
- Staja, Genus Staja Brusina, 1897 † (HYDROBIIDAE) (FOSSIL)
- Stalactella, Subgenus Propilsbrya (Stalactella) P. Bartsch, 1906 (EPIROBIIDAE)
- stalagmia, Proterato stalagmia C.N. Cate, 1975 - (TRIVIIDAE)
- Stalagmium, syn of: Genus Crenella T. Brown, 1827 (MYTILIDAE)
- stalagmium, Solariella stalagmium (T.A. Conrad, 1833 †) - (SOLARIELLIDAE) (FOSSIL)
- stalderi, Modiolus stalderi K. Martin, 1914 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- stalderi, Musculus stalderi K. Martin, 1914 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- stalderi, Pitar stalderi B.L. Clark, 1915 - syn of: Amiantis callosa (T.A. Conrad, 1837) - (VENERIDAE)
- stalderi, Pitar stalderi Clark, 1915 - syn of: Amiantis callosa (T.A. Conrad, 1837) - (VENERIDAE)
- stalennuyi, Diodora stalennuyi Dell'Angelo, Sosso, O. Anistratenko & V. Anistratenko, 2017 † - (FISSURELLIDAE) (FOSSIL)
- stalennuyi, Haliotis stalennuyi Owen & Berschauer, 2017 † - (HALIOTIDAE) (FOSSIL)
- staleyi, Protothaca staleyi W.M. Gabb, 1886 † - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE) (FOSSIL)
- Stalioa, Genus Stalioa Brusina, 1870 † (AMNICOLIDAE) (FOSSIL)
- stalioi, Melanella stalioi (Š. Brusina, 1869) - (EULIMIDAE)
- Staliola, syn of: Genus Micromelania Brusina, 1874 † (HYDROBIIDAE) (FOSSIL)
- Staliopsis, Genus Staliopsis Rzehak, 1893 † (AMNICOLIDAE) (FOSSIL)
- stalix, Mirus stalix (W.H. Benson, 1863) - (ENIDAE)
- stallauensis, Pachydiscus stallauensis (Imkeller, 1901 †) - (DESMOCERATIDAE) (FOSSIL)
- stamina, Melanella stamina W.H. Dall, 1927 - (EULIMIDAE)
- staminata, Anadara staminata (W.H. Dall, 1898 †) - (ARCIDAE) (FOSSIL)
- staminatus, Granulifusus staminatus (T.A. Garrard, 1966) - (FASCIOLARIIDAE)
- staminea, Anatoma staminea A. Adams, 1862 - syn of: Scissurella staminea (A. Adams, 1862) - (ANATOMIDAE)
- staminea, Olivula staminea (T.A. Conrad, 1832 †) - (ANCILLARIIDAE) (FOSSIL)
- staminea, Dallarca staminea (T. Say, 1832 †) - (ARCIDAE) (FOSSIL)
- staminea, Bulla staminea K.T. Menke, 1835 - syn of: Hydatina physis (C. Linnaeus, 1758) - (BULLIDAE)
- staminea, Aforia staminea (R.B. Watson, 1881) - (COCHLESPIRIDAE)
- staminea, Doriopsilla staminea (H. Basedow & C. Hedley, 1905) - (DENDRODORIDIDAE)
- staminea, Scalina staminea T.A. Conrad, 1865 † - (EPITONIIDAE) (FOSSIL)
- staminea, Leucozonia staminea R. Tate, 1888 † - (FASCIOLARIIDAE) (FOSSIL)
- staminea, Glycymeris staminea T.A. Conrad, 1833 † - (GLYCYMERIDIDAE) (FOSSIL)
- staminea, Limaria staminea T.A. Conrad, 1848 † - (LIMIDAE) (FOSSIL)
- staminea, Mitra staminea W.H. Dall, 1905 - syn of: Vexillum vulpecula (C. Linnaeus, 1758) - (MITRIDAE)
- staminea, Scissurella staminea (A. Adams, 1862) - (SCISSURELLIDAE)
- staminea, Semele staminea (T.A. Conrad, 1848 †) - (SEMELIDAE) (FOSSIL)
- staminea, Solariella staminea J.F. Quinn, 1992 - syn of: Solariella carvalhoi H. de Souza Lopes & P.d. Cardoso, 1958 - (SOLARIELLIDAE)
- staminea, Grateloupia staminea C. des Moulins 1828 † - (VENERIDAE) (FOSSIL)
- staminea, Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea, Paphia staminea T.A. Conrad, 1837 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea, Periglypta staminea T.A. Conrad, 1838 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea, Venerupis staminea T.A. Conrad, 1837 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea, Venus staminea T.A. Conrad, 1837 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea euglypta, Protothaca staminea euglypta G.B. III Sowerby, 1914 - syn of: Leukoma euglypta (G.B. III Sowerby, 1914) - (VENERIDAE)
- staminea maternae, Olivula staminea maternae (K.V.W. Palmer, 1937 †) - (ANCILLARIIDAE) (FOSSIL)
- staminea orbella, Venus staminea orbella P.P. Carpenter, 1864 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- staminea punctulifera, Olivula staminea punctulifera W.M. Gabb, 1860 † - (ANCILLARIIDAE) (FOSSIL)
- staminea reklawensis, Olivula staminea reklawensis (Garvie, 1996 †) - (ANCILLARIIDAE) (FOSSIL)
- staminea spatiosa, Protothaca staminea spatiosa W.H. Dall, 1916 - syn of: Leukoma laciniata (P.P. Carpenter, 1864) - (VENERIDAE)
- staminea sulculosa, Venus staminea sulculosa W.H. Dall, 1902 - syn of: Leukoma staminea (T.A. Conrad, 1837) - (VENERIDAE)
- stamineum, Raphistoma stamineum J.W. Hall, 1847 † - (RAPHISTOMATIDAE) (FOSSIL)
- stamineus, Aliofusus stamineus N.F. Sohl, 1964 † - (BUCCINIDAE) (FOSSIL)
- stamineus, Euphemites stamineus (T.A. Conrad, 1842 †) - (EUPHEMITIDAE) (FOSSIL)
- stamineus, Calyptraphorus stamineus (T.A. Conrad, 1855 †) - (ROSTELLARIIDAE) (FOSSIL)
- stamineus, Turbo stamineus T. Martyn, 1784 - syn of: Lunella torquata (J.F. Gmelin, 1791) - (TURBINIDAE)
- staminifera, Notomyrtea staminifera J. Marwick, 1929 † - (LUCINIDAE) (FOSSIL)
- stamnana, Melanopsis aetolica stamnana P. Oppenheim, 1890 † - (MELANOPSIDAE) (FOSSIL)
- stampiana, Ailinzebina stampiana (P. Lozouet, 1999 †) - (RISSOINIDAE) (FOSSIL)
- stampinensis, Pisinna stampinensis P. Lozouet, 2015 † - (ANABATHRIDAE) (FOSSIL)
- stampinensis, Bulla stampinensis A.E.M. Cossmann, 1879 † - (BULLIDAE) (FOSSIL)
- stampinensis, Chevallieria stampinensis P. Lozouet, 2015 † - (IRAVADIIDAE) (FOSSIL)
- stampinensis, Pteria stampinensis (G.P. Deshayes, 1858 †) - (PTERIIDAE) (FOSSIL)
- stampinensis, Lophocochlias stampinensis P. Lozouet, 2011 † - (SKENEIDAE) (FOSSIL)
- stampinensis, Vermetus stampinensis A.E.M. Cossmann & A. Lambert, 1884 † - (VERMETIDAE) (FOSSIL)
- stanae, Theodoxus stanae (Š. Brusina, 1893 †) - (NERITIDAE) (FOSSIL)
- stancyki, Ersilia stancyki A. Warén, 1980 - (EULIMIDAE)
- Standardoceras, Genus Standardoceras Stait & Flower, 1985 † (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- Standella, Subgenus Spisula (Standella) J.E. Gray, 1853 (MACTRIDAE)
- standeni, Mauritia standeni J.C. Melvill, 1895 - syn of: Mauritia scurra (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- standeni, Trophon standeni H. Strebel, 1904 - syn of: Xymenopsis corrugata (L.A. Reeve, 1848) - (MURICIDAE)
- standeni, Pyrgulina standeni (P. Dautzenberg & H. Fischer, 1906) - (PYRAMIDELLIDAE)
- standeni, Standeniella standeni P. Dautzenberg & H. Fischer, 1906 - syn of: Pyrgulina standeni (P. Dautzenberg & H. Fischer, 1906) - (PYRAMIDELLIDAE)
- standeni, Constantia standeni J.C. Melvill, 1899 - (VANIKORIDAE)
- Standeniella, syn of: Subgenus Chrysallida (Pyrgulina) A. Adams, 1864 (PYRAMIDELLIDAE)
- standfesti, Pseudidyla standfesti (Penecke, 1891) † - (CLAUSILIIDAE) (FOSSIL)
- stanfieldi, Purpuriconus stanfieldi (E.J. Petuch, 1998) - (CONIDAE)
- stanfordiana, Acmaea stanfordiana S.S. Berry, 1957 - syn of: Lottia stanfordiana (S.S. Berry, 1957) - (ACMAEIDAE)
- stanfordiana, Lottia stanfordiana (S.S. Berry, 1957) - (LOTTIIDAE)
- stangeri, Ammonites stangeri J.L.Jr. Baily, 1855 † - syn of: Plesiotexanites stangeri (J.L.Jr. Baily, 1855 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- stangeri, Rhyssoplax stangeri (L.A. Reeve, 1847) - (CHITONIDAE)
- stangeri, Plesiotexanites stangeri (J.L.Jr. Baily, 1855 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- stangeri, Gari stangeri (J.E. Gray, 1843) - (PSAMMOBIIDAE)
- stangeri, Psammobia stangeri J.E. Gray, 1843 - syn of: Gari stangeri (J.E. Gray, 1843) - (PSAMMOBIIDAE)
- stanimirae, Belgrandiella stanimirae D.G. Georgiev, 2011 - (HYDROBIIDAE)
- Stanisicarion, Genus Stanisicarion Hyman & Ponder, 2010 (HELICARIONIDAE)
- stanisici, Sitala stanisici K.C. Emberton, 2010 - (ARIOPHANTIDAE)
- stanisici, Reticulapex stanisici K.C. Emberton & R.J. Griffiths, 2009 - (CHAROPIDAE)
- stanisici, Solenoxiphus stanisici K.L. Lamprell & J.M. Healy, 1998 - syn of: Solenoxiphus striatulus S.D. Chistikov, 1983 - (ENTALINIDAE)
- Stanisicia, Genus Stanisicia S.A. Clark, 2009 (CAMAENIDAE)
- stanislas, Hyalina stanislas J.E. Tenison-Woods, 1877 - syn of: Serrata mustelina (G.F. Angas, 1871) - (MARGINELLIDAE)
- stanislas, Volvarina stanislas J.E. Tenison-Woods, 1877 - syn of: Serrata mustelina (G.F. Angas, 1871) - (MARGINELLIDAE)
- stanislasi, Ammonites stanislasi Torcapel, 1884 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- stanislasmeunieri, Polinices stanislasmeunieri C.J. Maury, 1917 † - (NATICIDAE) (FOSSIL)
- stanislausense, Lyelliceras stanislausense Anderson, 1958 † - syn of: Euomphaloceras septemseriatum (Cragin, 1893 †) - (LYELLICERATIDAE) (FOSSIL)
- stanislausensis, Pachydiscus stanislausensis Anderson, 1958 † - (DESMOCERATIDAE) (FOSSIL)
- stanislavi, Caspia stanislavi T.L. Alexenko & Y.I. Starobogatov, 1987 - (HYDROBIIDAE)
- stanislavi, Callitomaria stanislavi Batten, 1956 † - (PHYMATOPLEURIDAE) (FOSSIL)
- stankovici, Montenegrina stankovici (J. Urbanski, 1960) - (CLAUSILIIDAE)
- stankovici, Dreissena stankovici A.A. Lvova & Y.I. Starobogatov, 1982 - syn of: Dreissena carinata (R.W. Dunker, 1853) - (DREISSENIDAE)
- stankovici, Lyhnidia stankovici S. Hadžišce, 1959 - (HYDROBIIDAE)
- stankovici, Neofossarulus stankovici (W. Polinski, 1929) - (HYDROBIIDAE)
- stankovici, Ohrigocea stankovici (S. Hadžišce, 1959) - (HYDROBIIDAE)
- stankovici, Micropyrgula stankovici (W. Polinski, 1929) - (HYDROBIIDAE)
- stankovici, Pyrgula stankovici W. Polinski, 1929 - syn of: Micropyrgula stankovici (W. Polinski, 1929) - (HYDROBIIDAE)
- stankovici, Gyraulus stankovici S. Hadžišce, 1953 - (PLANORBIDAE)
- Stankovicia, Genus Stankovicia W. Polinski, 1932 (HYDROBIIDAE)
- stankovskyi, Glabrocingulum stankovskyi Mazaev, 2006 † - (GOSSELETINIDAE) (FOSSIL)
- stankowskii, Molema stankowskii F. Köhler, 2011 - (CAMAENIDAE)
- Stanleya, Genus Stanleya J.R. Bourguignat, 1885 (PALUDOMIDAE)
- stanleyense, Cyamium stanleyense H.B. Preston, 1913 - syn of: Cyamium antarcticum R.A. Philippi, 1845 - (CYAMIIDAE)
- stanleyi, Gabbiella stanleyi (E.A. Smith, 1877) - (BITHYNIIDAE)
- stanleyi, Biomphalaria stanleyi (E.A. Smith, 1888) - (PLANORBIDAE)
- stanleyia, Bandelastraea stanleyia (K. Bandel 1994 †) - (ANOMPHALIDAE) (FOSSIL)
- Stannakhites, Genus Stannakhites Vavilov , 1978 † (LONGOBARDITIDAE) (FOSSIL)
- stannum, Fusinus stannum P. Callomon & M.A. Snyder, 2008 - (FASCIOLARIIDAE)
- stansburiensis, Aturia stansburiensis Glaessner, 1955 † - (ATURIIDAE) (FOSSIL)
- Stantonella, Genus Stantonella Wade , 1926 † (STREPSIDURIDAE) (FOSSIL)
- stantonensis, Clastoteuthis stantonensis H.G. Lang, 1928 † - (PASSALOTEUTHIDIDAE) (FOSSIL)
- stantonensis, Streblochondria stantonensis Newell, 1938 † - (STREBLOCHONDRIIDAE) (FOSSIL)
- stantoni, Tarrantoceras stantoni (Adkins 1928 †) - (ACANTHOCERATIDAE) (FOSSIL)
- stantoni, Homolsomites stantoni (McLellan, 1927 †) - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- stantoni, Eusebia stantoni C.J. Maury, 1930 † - (ARCIDA (UNASSIGNED)) (FOSSIL)
- stantoni, Pachycardium stantoni (B. Wade, 1926 †) - (CARDIIDAE) (FOSSIL)
- stantoni, Cardioceras stantoni Reeside, 1919 † - (CARDIOCERATIDAE) (FOSSIL)
- stantoni, Cerithium stantoni W.H. Dall, 1907 - syn of: Cerithium guinaicum R.A. Philippi, 1849 - (CERITHIIDAE)
- stantoni, Cerithium stantoni W.H. Dall, 1907 - syn of: Cerithium guinaicum R.A. Philippi, 1849 - (CERITHIIDAE)
- stantoni, Proclydonautilus stantoni Smith, 1927 † - (CLYDONAUTILIDAE) (FOSSIL)
- stantoni, Forresteria stantoni Reeside, 1932 † - (COLLIGNONICERATIDAE) (FOSSIL)
- stantoni, Tetrahoplitoides stantoni (Anderson, 1902 †) - (HOPLITIDAE) (FOSSIL)
- stantoni, Mytiloides stantoni Sokolow, 1914 † - (INOCERAMIDAE) (FOSSIL)
- stantoni, Macluritella stantoni T.W. Kirk, 1927 † - (MACLURITIDAE) (FOSSIL)
- stantoni, Euspira stantoni Kirkland, 1996 † - (NATICIDAE) (FOSSIL)
- stantoni, Nostoceras stantoni A. Hyatt, 1894 † - (NOSTOCERATIDAE) (FOSSIL)
- stantoni, Nucula stantoni L.W. Stephenson, 1923 † - (NUCULIDAE) (FOSSIL)
- stantoni, Oppelia stantoni Imlay, 1964 † - (OPPELIIDAE) (FOSSIL)
- stantoni, Nemodon stantoni Gardner, 1916 † - (PARALLELODONTIDAE) (FOSSIL)
- stantoni, Chlamys stantoni J. Hill, 1893 † - (PECTINIDAE) (FOSSIL)
- stantoni, Proplacenticeras stantoni A. Hyatt, 1903 † - (PLACENTICERATIDAE) (FOSSIL)
- stantoni, Tennessiella stantoni (Stephenson, 1941) † - (PTEROTRIGONIIDAE) (FOSSIL)
- stantoni, Ptychomya stantoni Cragin, 1905 † - (PTYCHOMYIDAE) (FOSSIL)
- stantoni, Traskites stantoni Smith, 1927 † - (SANDLINGITIDAE) (FOSSIL)
- stantoni, Sargana stantoni (Weller, 1907 †) - (SARGANIDAE) (FOSSIL)
- stantoni, Acharax stantoni (E.H. Vokes, 1955 †) - (SOLEMYIDAE) (FOSSIL)
- stantoni, Eosolen stantoni (C.S. Weaver, 1905 †) - (SOLENIDAE) (FOSSIL)
- stantoni, Lilloettia stantoni Imlay, 1953 † - (SPHAEROCERATIDAE) (FOSSIL)
- stantoni, Trigonia stantoni L.W. Stephenson, 1941 † - (TRIGONIIDAE) (FOSSIL)
- stantoni, Tropites stantoni Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- stantoni, Macrocallista stantoni Waring, 1917 † - (VENERIDAE) (FOSSIL)
- stantoni quitmanensis, Chlamys stantoni quitmanensis Stanton † - (PECTINIDAE) (FOSSIL)
- stantoni yeharai, Mytiloides stantoni yeharai T. Nagao & E. Matsumoto, 1939 † - (INOCERAMIDAE) (FOSSIL)
- Stantonites, Subgenus Clionitites (Stantonites) Hyatt & Smith, 1905 † (CLIONITITIDAE) (FOSSIL)
- Stantonoceras, Genus Stantonoceras Johnson, 1903 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- stanwellensis, Iotrigonia stanwellensis Skwarko, 1963 † - (IOTRIGONIIDAE) (FOSSIL)
- stanyi, Calliotropis stanyi G.T. Poppe, S.P. Tagaro & H. Dekker, 2006 - (CALLIOTROPIDAE)
- stanyi, Fusinus stanyi F. Swinnen & K. Fraussen, 2006 - (FASCIOLARIIDAE)
- stapes, Dentalium stapes M. Boissevain, 1906 - syn of: Gadilina insolita (E.A. Smith, 1894) - (DENTALIIDAE)
- stapes, Gadilina stapes M. Boissevain, 1906 - syn of: Gadilina insolita (E.A. Smith, 1894) - (GADILINIDAE)
- stapes, Theliderma stapes (I. Lea, 1831) - (UNIONIDAE)
- stapfi, Chlamys stapfi Neuffer, 1973 † - (PECTINIDAE) (FOSSIL)
- Staphylaea, Genus Staphylaea F.P. Jousseaume, 1884 (CYPRAEIDAE)
- staphylaea, Staphylaea staphylaea (C. Linnaeus, 1758) - (CYPRAEIDAE)
- staphylaea consobrina, Staphylaea staphylaea consobrina (A. Garrett, 1879) - (CYPRAEIDAE)
- staphylaea consobrina descripta, Staphylaea staphylaea consobrina descripta T. Iredale, 1935 - (CYPRAEIDAE)
- staphylaea laevigata, Staphylaea staphylaea laevigata (P. Dautzenberg, 1932) - (CYPRAEIDAE)
- staphylaea nolani, Staphylaea staphylaea nolani F.Jr. Lorenz, 1989 - (CYPRAEIDAE)
- Staphylaeini, syn of: Genus Propustularia F.A. Schilder, 1927 (CYPRAEIDAE)
- staphylea, Cypraea staphylea C. Linnaeus, 1758 † - (CYPRAEIDAE) (FOSSIL)
- staphylemorpha, Volvulella staphylemorpha M. Harzhauser, 2014 † - (RHIZORIDAE) (FOSSIL)
- staphylina, Neptunea staphylina W.H. Dall, 1919 - syn of: Boreotrophon bentleyi W.H. Dall, 1908 - (BUCCINIDAE)
- staphylinus, Trophonopsis staphylinus W.H. Dall, 1919 - syn of: Boreotrophon bentleyi W.H. Dall, 1908 - (MURICIDAE)
- staphylophera, Chaetopleura staphylophera W.G. Lyons, 1985 - (CHAETOPLEURIDAE)
- staphylophora, Chaetopleura staphylophora W.G. Lyons, 1985 - syn of: Chaetopleura staphylophera W.G. Lyons, 1985 - (CHAETOPLEURIDAE)
- stappersi, Pseudospatha stappersi H.A. Pilsbry & J.C. Bequaert, 1927 - syn of: Pseudospatha tanganyicensis (E.A. Smith, 1880) - (UNIONIDAE)
- Stappyersella, Genus Stappyersella † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- starboroughense, Crenilabium starboroughense (L. C. King, 1934 †) - (ACTEONIDAE) (FOSSIL)
- starcki, Dimyella starcki R.C. Moore, 1970 - (DIMYIDAE)
- starensis, Japonites starensis Bucher, 1989 † - (GYMNITIDAE) (FOSSIL)
- staretti, Polystira staretti E.J. Petuch, 2002 - syn of: Polystira starretti E.J. Petuch, 2002 - (TURRIDAE)
- staringi, Euspira staringi (A.W. Janssen, 1969 †) - (NATICIDAE) (FOSSIL)
- staringii, Crassispira borealis staringii (M. Glibert, 1954) † - (PSEUDOMELATOMIDAE) (FOSSIL)
- starkeyae, Starkeyna starkeyae (C. Hedley, 1899) - (SKENEOPSIDAE)
- starkeyae, Teinostoma starkeyae C. Hedley, 1899 - syn of: Starkeyna starkeyae (C. Hedley, 1899) - (TORNIDAE)
- Starkeyna, Genus Starkeyna T. Iredale, 1930 (SKENEOPSIDAE)
- starkii, Systrophia starkii (H.B. Baker) - (SCOLODONTIDAE)
- starksi, Doryssa starksi F.C. Baker, 1914 - (PACHYCHILIDAE)
- starmeri, Phymorhynchus starmeri T.A. Okutani & S. Ohta, 1993 - (RAPHITOMIDAE)
- starmuehlneri, Bithynia starmuehlneri P. Glöer & V.M. Pešic, 2012 - (BITHYNIIDAE)
- starmuehlneri, Africanogyrus starmuehlneri (G.H. Brown, 1980) - (PLANORBIDAE)
- starobogatovi, Keenocardium starobogatovi A.I. Kafanov & Savizky, 1982 † - (CARDIIDAE) (FOSSIL)
- starobogatovi, Carychium starobogatovi Steklov, 1966 † - (ELLOBIIDAE) (FOSSIL)
- starobogatovi, Turricaspia starobogatovi Roshka, 1973 † - (HYDROBIIDAE) (FOSSIL)
- starobogatovi, Caspiohydrobia starobogatovi Iljina in Iljina & al., 1976 † - (HYDROBIIDAE) (FOSSIL)
- starobogatovi, Stagnicola atra starobogatovi E.P. Lazareva, 1967 - (LYMNAEIDAE)
- starobogatovi, Obesotoma starobogatovi I.P. Bogdanov, 1990 - (MANGELIIDAE)
- starobogatovi, Melanopsis starobogatovi V.V. Anistratenko, 1993 † - (MELANOPSIDAE) (FOSSIL)
- starobogatovi, Neopilina starobogatovi D. Ivanov & L.I. Moskalev, 2007 - (NEOPILINIDAE)
- starobogatovi, Polypylis starobogatovi Z.I. Izzatullaev, 1973 - (PLANORBIDAE)
- starobogatovi, Segmentina starobogatovi N.D. Kruglov & E.V. Soldatenko, 1997 - (PLANORBIDAE)
- starobogatovi, Hua starobogatovi F. Zatrawkin & I.M. Moskvicheva, 1986 - (SEMISULCOSPIRIDAE)
- starobogatovi, Juga starobogatovi Zatravkin & Moskvicheva, 1986 - (SEMISULCOSPIRIDAE)
- starobogatovi, Pseudeupera starobogatovi L.V. Krivosheina, 1978 - syn of: Pisidium subtruncatum A.W. Malm, 1855 - (SPHAERIIDAE)
- starobogatovi, Oxyloma starobogatovi I.M. Likharev & A.A. Schileyko, 1986 - (SUCCINEIDAE)
- starobogatovi, Amuranodonta starobogatovi I.M. Moskvicheva, 1973 - syn of: Anemina arcaeformis (P.M. Heude, 1877) - (UNIONIDAE)
- starobogatovi, Calyptogena starobogatovi E.M. Krylova & H. Sahling, 2006 - (VESICOMYIDAE)
- starostini, Pseudocaspia starostini Y.I. Starobogatov, 1972 - (HYDROBIIDAE)
- starostini, Melanopsis starostini Z.I. Izzatullaev & Y.I. Starobogatov, 1984 - (MELANOPSIDAE)
- starretti, Polystira starretti E.J. Petuch, 2002 - (TURRIDAE)
- starretti, Lysinoe starretti F.G. Thompson, 1963 - (XANTHONYCHIDAE)
- starri, Crassispira starri L.G. Hertlein, 1927 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- starrkingi, Toxoceratoides starrkingi F.M. Anderson, 1938 † - (ANCYLOCERATIDAE) (FOSSIL)
- stasii, Rissoina stasii Faber & Gori, 2016 - (RISSOINIDAE)
- staszici, Flexiclymenia staszici Czarnocki, 1989 † - syn of: Protactoclymenia staszici (Czarnocki, 1989 †) - (CYMACLYMENIIDAE) (FOSSIL)
- staszici, Protactoclymenia staszici (Czarnocki, 1989 †) - (CYRTOCLYMENIIDAE) (FOSSIL)
- staszici, Natica staszici Friedberg † - syn of: Polinices proredemptus (F. Sacco, 1891 †) - (NATICIDAE) (FOSSIL)
- staszycii, Acteon staszycii Zeushner, 1849 † - syn of: Phaneroptyxis staszycii (Zeushner, 1849 †) - (ACTEONIDAE) (FOSSIL)
- staszycii, Phaneroptyxis staszycii (Zeushner, 1849 †) - (ITIERIIDAE) (FOSSIL)
- stata, Anodonta stata J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- stataria, Anodonta stataria J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- statheri, Paracrioceras statheri Spath, 1924 † - syn of: Paracrioceras spathi Kemper & al., 1981 † - (ANCYLOCERATIDAE) (FOSSIL)
- statianus, Parachiton statianus Dell'Angelo & al., 2015 † - (LEPTOCHITONIDAE) (FOSSIL)
- statiola, Eratoidea statiola T. McCleery, 2011 - (MARGINELLIDAE)
- stationis, Lissarca stationis Fleming, 1948 - (PHILOBRYIDAE)
- statluensis, Haidaia statluensis Crickmay, 1930 † - (MYOPHORELLIDAE) (FOSSIL)
- statshiunaica, Cyclonema statshiunaica Saladzius, 1966 † - (PLATYCERATIDAE) (FOSSIL)
- statuminata, Gyroscala statuminata (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- statuminata, Epitonium statuminata G.B. II Sowerby, 1844 - syn of: Gyroscala statuminata (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- stauberi, Lomanotus stauberi K.B. Clark & Goetzfried, 1976 - syn of: Lomanotus vermiformis C.N.E. Eliot, 1908 - (LOMANOTIDAE)
- staubi, Melanopsis staubi Š. Brusina, 1903 † - syn of: Microcolpia parreyssii sikorai (Š. Brusina, 1903 †) - (MELANOPSIDAE) (FOSSIL)
- staudingeri, Cristataria staudingeri (O. Böttger, 1890) - (CLAUSILIIDAE)
- staudingeri, Mycetopus staudingeri H.F.A. von Ihering, 1890 - syn of: Mycetopoda siliquosa (J.B. von Spix, 1827) - (MYCETOPODIDAE)
- staudingeri pallaryi, Cristataria staudingeri pallaryi H. Nordsieck, 1971 - (CLAUSILIIDAE)
- Staufenia, Genus Staufenia Hoffmann, 1913 † (GRAPHOCERATIDAE) (FOSSIL)
- staufensis, Anodomaria staufensis J. Gründel & A. Nützel, 2015 † - (PLEUROTOMARIIDAE) (FOSSIL)
- staufferi, Albertoceras staufferi Ulrich & al., 1944 † - (ELLESMEROCERATIDAE) (FOSSIL)
- staufferi, Lopha staufferi Bergquist, 1944 † - (OSTREIDAE) (FOSSIL)
- staufferi, Werneroceras staufferi Sweet & Miller, 1956 † - (WERNEROCERATIDAE) (FOSSIL)
- Staufferoceras, Genus Staufferoceras Foerste, 1932 † (VALCOUROCERATIDAE) (FOSSIL)
- staufti, Cominella staufti A.A. Olsson, 1928 † - (BUCCINIDAE) (FOSSIL)
- staufti, Thyasira staufti A.A. Olsson, 1931 † - (THYASIRIDAE) (FOSSIL)
- staurella, Tellina staurella J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- staurella, Tellinella staurella L. Spengler, 1798 - syn of: Tellina staurella J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- staurella apicifusca, Tellinella staurella apicifusca É. Lamy, 1918 - syn of: Tellina staurella J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- Staurodon, Genus Staurodon R.T. Lowe, 1852 (VERTIGINIDAE)
- Staurodoris, syn of: Genus Doris C. Linnaeus, 1758 (DORIDIDAE)
- Stauroglypta, Genus Stauroglypta F.C. Baker, 1935 (SAGDIDAE)
- stauropolitana, Quadriplicata aggesta stauropolitana (O.W. Von Rosen, 1901) - (CLAUSILIIDAE)
- stauropolitana, Helix stauropolitana A. Schmidt, 1854 - syn of: Caucasotachea atrolabiata (I. Krynicki, 1833) - (HELICIDAE)
- stauropolitana, Suboestophora jeresae stauropolitana A. Ortiz De Zárate, 1962 - (HYGROMIIDAE)
- stauropolitana, Hyalinia stauropolitana O.W. Von Rosen, 1901 - syn of: Aegopinella minor (G. Stabile, 1864) - (ZONITIDAE)
- Staurospira, syn of: Genus Holopea Hall, 1847 † (HOLOPEIDAE) (FOSSIL)
- staurostomum, Trimeroceras staurostomum (Barrande, 1865 †) - (TRIMEROCERATIDAE) (FOSSIL)
- STAUROTEUTHIDAE - syn of Family: CIRROTEUTHIDAE
- Stauroteuthis, Genus Stauroteuthis A.E. Verrill, 1879 (CIRROTEUTHIDAE)
- Staurotrema, Subgenus Gastrocopta (Staurotrema) H.A. Pilsbry, 1948 (GASTROCOPTIDAE)
- Stavelia, Genus Stavelia J.E. Gray, 1858 (MYTILIDAE)
- stavropoliana, Hydrobia stavropoliana Zhizhchenko, 1936 † - (HYDROBIIDAE) (FOSSIL)
- stavropolica, Claraia stavropolica Gavrilova, 1998 † - (PTERINOPECTINIDAE) (FOSSIL)
- Stazzania, Genus Stazzania F. Sacco, 1890 (MARGINELLIDAE)
- Stchepinskya, Subgenus Divalinga (Stchepinskya) A.L. Chavan, 1951 † (LUCINIDAE) (FOSSIL)
- stchukini, Cathaica stchukini W.A. Lindholm, 1927 - (BRADYBAENIDAE)
- stclairi, Sinuopea stclairi Ulrich & al., 1931 † - (SINUOPEIDAE) (FOSSIL)
- stclarae, Rissoina stclarae J.E. Tenison-Woods, 1877 - syn of: Alaba monile (A. Adams, 1862) - (RISSOINIDAE)
- steadmani, Naesiotus steadmani L.A. Chambers, 1986 - (BULIMULIDAE)
- stearina, Pleurotomella stearina W.H. Dall, 1927 - syn of: Theta chariessa (R.B. Watson, 1881) - (RAPHITOMIDAE)
- stearnsi, Barbatia stearnsi (H.A. Pilsbry, 1895) - (ARCIDAE)
- stearnsi, Satsuma stearnsi H.A. Pilsbry - (CAMAENIDAE)
- stearnsi, Austraeolis stearnsi (T.D.A. Cockerell, 1901) - (FACELINIDAE)
- stearnsi, Neaeromya stearnsi W.H. Dall, 1899 - (LASAEIDAE)
- stearnsi, Ocenebra stearnsi H. Hemphill, 1911 - syn of: Ocinebrina gracillima (R.E.C. Stearns, 1871) - (MURICIDAE)
- stearnsi, Pristiloma stearnsi (T.B. Bland, 1875) - (PRISTILOMATIDAE)
- stearnsi, Solariella stearnsi H.A. Pilsbry, 1895 - syn of: Sericominolia stearnsii (H.A. Pilsbry, 1895) - (SOLARIELLIDAE)
- stearnsi, Vitrinella stearnsi P. Bartsch, 1907 - (TORNIDAE)
- stearnsi, Triphora stearnsi P. Bartsch, 1907 - (TRIPHORIDAE)
- stearnsi, Tropites stearnsi Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- stearnsi, Bolma stearnsi H.S. Ladd, 1970 † - (TURBINIDAE) (FOSSIL)
- stearnsi, Dissotropis stearnsi (P. Bartsch, 1906) - (UROCOPTIDAE)
- stearnsi, Poeycoptis lituus stearnsi (J. Gundlach in R. Arango, 1878) - (UROCOPTIDAE)
- Stearnsia, Genus Stearnsia White, 1887 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- stearnsiana, Amnicola stearnsiana H.A. Pilsbry, 1899 - syn of: Pyrgulopsis stearnsiana (H.A. Pilsbry, 1899) - (AMNICOLIDAE)
- stearnsiana, Genota stearnsiana W.J. Raymond, 1904 - syn of: Megasurcula stearnsiana (W.J. Raymond, 1904) - (BORSONIIDAE)
- stearnsiana, Xerarionta stearnsiana (W.M. Gabb, 1868) - (CEPOLIDAE)
- stearnsiana, Pusia stearnsiana C.N. Cate, 1963 - syn of: Pusia tusum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- stearnsiana, Micrarionta stearnsiana W.M. Gabb, 1867 - syn of: Xerarionta stearnsiana (W.M. Gabb, 1868) - (HELMINTHOGLYPTIDAE)
- stearnsiana, Pyrgulopsis stearnsiana (H.A. Pilsbry, 1899) - (HYDROBIIDAE)
- stearnsiana, Lucina stearnsiana K. Oyama, 1954 - syn of: Pegophysema bialata (H.A. Pilsbry, 1895) - (LUCINIDAE)
- stearnsiana, Coralliophila stearnsiana W.H. Dall, 1919 - syn of: Coralliophila erosa (P.F. Röding, 1798) - (MURICIDAE)
- stearnsiana, Elimia caelatura stearnsiana R.E. Call, 1886 - (PLEUROCERIDAE)
- stearnsiana, Megasurcula stearnsiana (W.J. Raymond, 1904) - (PSEUDOMELATOMIDAE)
- stearnsiella, Odostomia stearnsiella H.A. Pilsbry, 1918 - (PYRAMIDELLIDAE)
- stearnsii, Siphonalia stearnsii H.A. Pilsbry, 1894 - syn of: Siphonalia pseudobuccinum J.C. Melvill, 1888 - (BUCCINIDAE)
- stearnsii, Bulimulus stearnsii W.H. Dall, 1890 † - syn of: Tocobaga floridanus (T.A. Conrad, 1846 †) - (BULIMULIDAE) (FOSSIL)
- stearnsii, Venericardia stearnsii W.H. Dall, 1903 - syn of: Cyclocardia ventricosa (Gould, 1850) - (CARDITIDAE)
- stearnsii, Euphaedusa stearnsii (H.A. Pilsbry, 1894) - (CLAUSILIIDAE)
- stearnsii, Aesopus stearnsii (G.W. Tryon, 1883) - (COLUMBELLIDAE)
- stearnsii, Conasprella stearnsii (T.A. Conrad, 1869) - (CONIDAE)
- stearnsii, Dentalium stearnsii H.A. Pilsbry & B. Sharp, 1898 - syn of: Compressidens stearnsii (H.A. Pilsbry & B. Sharp, 1898) - (DENTALIIDAE)
- stearnsii, Cadulus stearnsii H.A. Pilsbry & B. Sharp, 1898 - syn of: Compressidens stearnsii (H.A. Pilsbry & B. Sharp, 1898) - (GADILIDAE)
- stearnsii, Stenosemus stearnsii (W.H. Dall, 1902) - (ISCHNOCHITONIDAE)
- stearnsii, Pseudopythina stearnsii W.H. Dall, 1899 - (KELLIIDAE)
- stearnsii, Murex stearnsii W.H. Dall, 1918 - syn of: Homalocantha oxyacantha (W.J. Broderip, 1833) - (MURICIDAE)
- stearnsii, Coralliophila stearnsii H.A. Pilsbry, 1895 - syn of: Coralliophila squamosissima (E.A. Smith, 1876) - (MURICIDAE)
- stearnsii, Brachidontes stearnsii H.A. Pilsbry & W.J. Raymond, 1898 - syn of: Brachidontes adamsianus (R.W. Dunker, 1857) - (MYTILIDAE)
- stearnsii, Mytilus stearnsii H.A. Pilsbry & W.J. Raymond, 1898 - syn of: Brachidontes adamsianus (R.W. Dunker, 1857) - (MYTILIDAE)
- stearnsii, Mytilus stearnsii H.A. Pilsbry & W.J. Raymond, 1898 - syn of: Brachidontes adamsianus (R.W. Dunker, 1857) - (MYTILIDAE)
- stearnsii, Cellana grata stearnsii H.A. Pilsbry, 1891 - (NACELLIDAE)
- stearnsii, Pecten stearnsii W.H. Dall, 1878 † - (PECTINIDAE) (FOSSIL)
- stearnsii, Periploma stearnsii (W.H. Dall, 1896) - (PERIPLOMATIDAE)
- stearnsii, Cricoploma stearnsii W.H. Dall, 1896 - syn of: Periploma stearnsii (W.H. Dall, 1896) - (PERIPLOMATIDAE)
- stearnsii, Compressidens stearnsii (H.A. Pilsbry & B. Sharp, 1898) - (PULSELLIDAE)
- stearnsii, Turbonilla stearnsii W.H. Dall & P. Bartsch, 1903 - (PYRAMIDELLIDAE)
- stearnsii, Parviturbo stearnsii (W.H. Dall, 1918) - (SKENEIDAE)
- stearnsii, Minolia stearnsii H.A. Pilsbry, 1895 - syn of: Sericominolia stearnsii (H.A. Pilsbry, 1895) - (SOLARIELLIDAE)
- stearnsii, Fabella stearnsii (W.H. Dall, 1899) - (SPORTELLIDAE)
- stearnsii, Sportella stearnsii W.H. Dall, 1899 - syn of: Fabella stearnsii (W.H. Dall, 1899) - (SPORTELLIDAE)
- stearnsii, Cinguloterebra stearnsii (H.A. Pilsbry, 1891) - (TEREBRIDAE)
- stearnsii, Terebra stearnsii H.A. Pilsbry, 1891 - syn of: Cinguloterebra stearnsii (H.A. Pilsbry, 1891) - (TEREBRIDAE)
- stearnsii, Sericominolia stearnsii (H.A. Pilsbry, 1895) - (TROCHIDAE)
- stearnsii, Tachyrhynchus stearnsii W.H. Dall, 1919 - (TURRITELLIDAE)
- stearnsii, Marsenina stearnsii (W.H. Dall, 1871) - (VELUTINIDAE)
- stearnsii, Pliocardia stearnsii (W.H. Dall, 1895) - (VESICOMYIDAE)
- stearnsii, Callogonia stearnsii W.H. Dall, 1895 - syn of: Pliocardia stearnsii (W.H. Dall, 1895) - (VESICOMYIDAE)
- stearnsii, Arctomelon stearnsii (W.H. Dall, 1872) - (VOLUTIDAE)
- stearnsii iriomotensis, Euphaedusa stearnsii iriomotensis J.T. Kuroda, 1960 - (CLAUSILIIDAE)
- stearnsii ryosukei, Arctomelon stearnsii ryosukei T. Habe & K. Itô, 1965 - (VOLUTIDAE)
- Stearnsium, Subgenus Tegula (Stearnsium) S.S. Berry, 1958 (TEGULIDAE)
- Stearoceras, Genus Stearoceras Hyatt, 1893 † (GRYPOCERATIDAE) (FOSSIL)
- Steatocoptis, Genus Steatocoptis H.A. Pilsbry, 1941 (UROCOPTIDAE)
- Steatocoptus, Genus Steatocoptus H.A. Pilsbry, 1941 (UROCOPTIDAE)
- Steatodryas, syn of: Genus Pachya Albers, 1850 (CAMAENIDAE)
- Steatonenia, Subgenus Columbinia (Steatonenia) H.A. Pilsbry, 1926 (CLAUSILIIDAE)
- stecki, Paraceratites stecki Silberling & Nichols, 1982 † - (CERATITIDAE) (FOSSIL)
- stecki, Ceccaceras stecki Monnet & Bucher, 2005 † - (CERATITIDAE) (FOSSIL)
- Steckites, Genus Steckites Brühwiler & al., 2012 † (MELAGATHICERATIDAE) (FOSSIL)
- Stectoplax, syn of: Genus Acanthochitona J.E. Gray, 1821 (ACANTHOCHITONIDAE)
- steehuisi, Aciculina steehuisi C.H. Oostingh, 1939 - syn of: Nassarius vittatus (A. Adams, 1853) - (NASSARIIDAE)
- steelei, Nevadoceras steelei Schiappa & al., 1995 † - (ADRIANITIDAE) (FOSSIL)
- steeli, Achatinella apexfulva steeli D.A. Welch, 1942 - (ACHATINELLIDAE)
- Steenbergia, Genus Steenbergia G. Mandahl-Barth, 1950 (HYGROMIIDAE)
- Steenbergia, syn of: Genus Heterostoma J.D.W. Hartmann, 1844 (HYGROMIIDAE)
- steenbuchi, Cyclas steenbuchi H.P.C. Møller, 1842 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- steenhuisi, Nassarius steenhuisi C.H. Oostingh, 1939 - syn of: Nassarius vittatus (A. Adams, 1853) - (NASSARIIDAE)
- steenstrupi, Lampanella steenstrupi F.H. Troschel in W. Kobelt, 1898 - syn of: Batillaria zonalis (J.G. Bruguière, 1792) - (BATILLARIIDAE)
- steenstrupi, Gonatus steenstrupi T.K. Kristensen, 1981 - (GONATIDAE)
- Steenstrupia, syn of: Genus Architeuthis J.J.S. Steenstrup, 1857 in Harting, 1860 (ARCHITEUTHIDAE)
- steenstrupiana, Sepiola steenstrupiana J.L. Levy, 1912 - (SEPIOLIDAE)
- steenstrupii, Corbulomya steenstrupii O.A.L. Mörch, 1867 - syn of: Gari tellinella (J.B.P.A. Lamarck, 1818) - (CORBULIDAE)
- steenstrupii, Onchidium steenstrupii C.G. Semper, 1885 - (ONCHIDIIDAE)
- steenstrupii, Gari steenstrupii O.A.L. Mörch, 1867 - syn of: Gari tellinella (J.B.P.A. Lamarck, 1818) - (PSAMMOBIIDAE)
- Steenstrupiola, syn of: Genus Onykia C.A. Lesueur, 1821 (ONYCHOTEUTHIDAE)
- Steereana, syn of: Genus Steeriana F.P. Jousseaume, 1900 (CLAUSILIIDAE)
- steerei, Scutalus steerei H.A. Pilsbry, 1900 - (BULIMULIDAE)
- steeriae, Murex steeriae L.A. Reeve, 1845 - syn of: Chicoreus maurus steeriae (L.A. Reeve, 1845) - (MURICIDAE)
- steeriae, Chicoreus maurus steeriae (L.A. Reeve, 1845) - (MURICIDAE)
- steeriae, Agaronia steeriae (L.A. Reeve, 1850) - (OLIVIDAE)
- steeriae, Olivancillaria steeriae L.A. Reeve, 1850 - syn of: Agaronia steeriae (L.A. Reeve, 1850) - (OLIVIDAE)
- Steeriana, Genus Steeriana F.P. Jousseaume, 1900 (CLAUSILIIDAE)
- steeriana, Steeriana steeriana (E.R. Sykes, 1893) - (CLAUSILIIDAE)
- steetzneri, Euphaedusa steetzneri (H.A. Pilsbry, 1919) - (CLAUSILIIDAE)
- stefanensis, Bartlettia stefanensis (S. Moricand, 1856) - (ETHERIIDAE)
- stefanescui, Toxoceratoides stefanescui Avram, 2001 † - (ANCYLOCERATIDAE) (FOSSIL)
- stefanescui, Sabbaiceras stefanescui Avram & Gradinaru, 1993 † - (NEOCOMITIDAE) (FOSSIL)
- stefanescui, Theodoxus stefanescui (C.F. Fontannes, 1887 †) - (NERITIDAE) (FOSSIL)
- stefanescui, Viviparus stefanescui (Stefanescu, 1896 †) - (VIVIPARIDAE) (FOSSIL)
- stefanescuiformis, Theodoxus stefanescuiformis Gozhik in Gozhik & Datsenko, 2007 † - (NERITIDAE) (FOSSIL)
- stefani, Cardavia stefani Kríž, 2005 † - (CARDIOLIDAE) (FOSSIL)
- stefaniae, Astartella stefaniae Hautmann, 2015 † - (ASTARTIDAE) (FOSSIL)
- stefaniana, Micromelania stefaniana (D. Pantanelli, 1879 †) - (HYDROBIIDAE) (FOSSIL)
- stefanini, Astarte stefanini Basse, 1930 † - (ASTARTIDAE) (FOSSIL)
- Stefaninia, Genus Stefaninia Migliorini & Venzo, 1934 † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- Stefaniniella, Genus Stefaniniella † (PTERIIDA (UNASSIGNED)) (FOSSIL)
- stefaninii, Brownisca stefaninii (M. Connolly, 1935) - (ACHATINIDAE)
- stefaninii, Costellaria stefaninii S. Nardini, 1934 - syn of: Nebularia bernhardina (P.F. Röding, 1798) - (COSTELLARIIDAE)
- stefaninii, Dicoelites stefaninii Spath, 1935 † - (DICOELITIDAE) (FOSSIL)
- stefaninii, Gaudryceras stefaninii Venzo, 1936 † - (GAUDRYCERATIDAE) (FOSSIL)
- stefaninii, Hildaites stefaninii Merla 1933 † - (HILDOCERATIDAE) (FOSSIL)
- stefaninii, Mitra stefaninii S. Nardini, 1934 † - (MITRIDAE) (FOSSIL)
- stefaninii, Lopha stefaninii Diaz-Romero, 1931 † - (OSTREIDAE) (FOSSIL)
- stefaninii, Pholadomya stefaninii Jaboli, 1959 † - (PHOLADOMYIDAE) (FOSSIL)
- stefaninii, Rutitrigonia stefaninii (Venzo, 1960 †) - (RUTITRIGONIIDAE) (FOSSIL)
- stefaninii, Trochus stefaninii S. Nardini, 1934 † - (TROCHIDAE) (FOSSIL)
- stefaninii, Tivela stefaninii (S. Nardini, 1933) - (VENERIDAE)
- stefaninii, Gratelupia stefaninii S. Nardini, 1933 - syn of: Tivela stefaninii (S. Nardini, 1933) - (VENERIDAE)
- stefanisi, Chrysallida stefanisi (J.G. Jeffreys, 1869) - (PYRAMIDELLIDAE)
- stefanisi, Rissoa stefanisi J.G. Jeffreys, 1869 - syn of: Chrysallida stefanisi (J.G. Jeffreys, 1869) - (RISSOIDAE)
- stefanoi, Bulimoscilla stefanoi E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- stefanssoni, Volutopsius stefanssoni W.H. Dall, 1919 - syn of: Volutopsius castaneus (O.A.L. Mörch, 1857) - (BUCCINIDAE)
- steffeki, Montenegrina dofleini steffeki Z. Eröss & M. Szekeres, 2006 - (CLAUSILIIDAE)
- steffeki, Islamia steffeki P. Glöer & J. Grego, 2015 - (HYDROBIIDAE)
- steffeni, Bentharca steffeni K. Amano, B.W. Jenkins & Nishida, 2015 † - (ARCIDAE) (FOSSIL)
- Steganodera, syn of: Genus Stegodera E.C. Von Martens, 1876 (CAMAENIDAE)
- Steganomphalus, Subgenus Tricolia (Steganomphalus) G.F. Harris & H.W. Burrows, 1891 (PHASIANELLIDAE)
- Steganotoma, syn of: Genus Pterocyclus W.H. Benson, 1832 (CYCLOPHORIDAE)
- stegaria, Cyprogenia stegaria (C.S. Rafinesque, 1820) - (UNIONIDAE)
- stegaria, Obovaria stegaria C.S. Rafinesque, 1820 - syn of: Theliderma stapes (I. Lea, 1831) - (UNIONIDAE)
- stegastris, Turbonilla stegastris J.C. Melvill & R. Standen, 1901 - (PYRAMIDELLIDAE)
- stegastris, Seguenzia stegastris B.A. Marshall, 1991 - (SEGUENZIIDAE)
- Stegeostephanus, Genus Stegeostephanus Buckman, 1922 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- stegeri, Fusinus stegeri W.G. Lyons, 1978 - (FASCIOLARIIDAE)
- stegeri, Brachycythara stegeri G.W. Nowell-Usticke, 1959 - (MANGELIIDAE)
- stegeri, Olivella stegeri A.A. Olsson, 1956 - (OLIVELLIDAE)
- stegeri, Eucyclotoma stegeri (J.T.L. McGinty, 1955) - (RAPHITOMIDAE)
- stegeri, Terebra stegeri R.T. Abbott, 1954 - syn of: Cinguloterebra floridana (W.H. Dall, 1889) - (TEREBRIDAE)
- stegeus, Stegeostephanus stegeus S.S. Buckman, 1922 † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- stegocephalum, Palaeomutela stegocephalum (Netschajew, 1894 †) - (PALAEOMUTELIDAE) (FOSSIL)
- Stegochiton, Genus Stegochiton Hoare & Smith, 1984 † (LEPTOCHITONIDAE) (FOSSIL)
- Stegocoelia, Genus Stegocoelia Stegocoelia † (GONIASMATIDAE) (FOSSIL)
- Stegoconcha, Genus Stegoconcha Böhm, 1907 † (PINNIDAE) (FOSSIL)
- Stegodera, Genus Stegodera E.C. Von Martens, 1876 (CAMAENIDAE)
- stegos, Calliotropis stegos C. Vilvens, 2007 - (CALLIOTROPIDAE)
- stegosauriformis, Tambja stegosauriformis M. Pola, J.L. Cervera & T.M. Gosliner, 2005 - (POLYCERIDAE)
- Stegoxyites, Genus Stegoxyites Buckman, 1924 † (OPPELIIDAE) (FOSSIL)
- Stehnocephalites, Genus Stehnocephalites Riccardi & Westermann, 1991 † (SPHAEROCERATIDAE) (FOSSIL)
- steinabrunnensis, Rissoina steinabrunnensis F. Sacco, 1895 † - (RISSOINIDAE) (FOSSIL)
- steinbacherae, Surcula steinbacherae F. Traub, 1979 † - (CLAVATULIDAE) (FOSSIL)
- steinbecki, Eubranchus steinbecki D.W. Behrens, 1987 - (EUBRANCHIDAE)
- steinbecki, Tellina steinbecki (E.V. Coan & P.H. Valentich-Scott, 2010) - (TELLINIDAE)
- steinbecki, Merisca steinbecki E.V. Coan & P.H. Valentich-Scott, 2010 - syn of: Tellina steinbecki (E.V. Coan & P.H. Valentich-Scott, 2010) - (TELLINIDAE)
- steinbergae, Corambe steinbergae (J.R. Lance, 1962) - (CORAMBIDAE)
- steindachenery, Atlanta steindachenery A. Oberwimmer, 1898 - syn of: Atlanta peronii C.A. Lesueur, 1817 - (ATLANTIDAE)
- steindachneri, Atlanta steindachneri A. Oberwimmer, 1898 - syn of: Atlanta peronii C.A. Lesueur, 1817 - (ATLANTIDAE)
- steindachneri, Celtites steindachneri Mojsisovics, 1893 † - (CELTITIDAE) (FOSSIL)
- steindachneri, Eupaludestrina steindachneri (C.A. Westerlund, 1902) - (COCHLIOPIDAE)
- steindachneri, Dendroconus steindachneri Hoernes & Auinger, 1879 † - (CONIDAE) (FOSSIL)
- steindachneri, Cuspidaria steindachneri R. Sturany, 1899 - (CUSPIDARIIDAE)
- steindachneri, Abralia steindachneri Weindl, 1914 - (ENOPLOTEUTHIDAE)
- steindachneri, Nassa steindachneri R. Sturany, 1900 - syn of: Nassarius thaumasius (R. Sturany, 1900) - (NASSARIIDAE)
- steindachneri, Onchidella steindachneri (C.G. Semper, 1885) - (ONCHIDIIDAE)
- steindachneri, Amussium steindachneri R. Sturany, 1901 - syn of: Propeamussium steindachneri (R. Sturany, 1901) - (PECTINIDAE)
- steindachneri, Propeamussium steindachneri (R. Sturany, 1901) - (PROPEAMUSSIIDAE)
- steinegeri, Colus callorhinus steinegeri (W.H. Dall, 1884) - (BUCCINIDAE)
- steinekei, Venidia steinekei Clark 1946 † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- steinekei, Costacallista steinekei Clark & J.W. Durham, 1946 † - (VENERIDAE) (FOSSIL)
- steineni, Margarella steineni (H. Strebel, 1905) - (CALLIOSTOMATIDAE)
- steineni, Onoba steineni (H. Strebel, 1908) - (RISSOIDAE)
- steinenii, Callochiton steinenii (G.J. Pfeffer in E.C. Von Martens & G.J. Pfeffer, 1886) - (CALLOCHITONIDAE)
- steinenii, Trachydermon steinenii L. Pfeiffer in E.C. Von Martens & L. Pfeiffer, 1886 - syn of: Callochiton steinenii (G.J. Pfeffer in E.C. Von Martens & G.J. Pfeffer, 1886) - (LEPIDOCHITONIDAE)
- steineri, Eclogavena steineri C.N. Cate, 1969 - syn of: Eclogavena coxeni (J.C. Cox, 1873) - (CYPRAEIDAE)
- steineri, Solenoxiphus steineri K.L. Lamprell & J.M. Healy, 1998 - syn of: Solenoxiphus striatulus S.D. Chistikov, 1983 - (ENTALINIDAE)
- steineri, Fustiaria steineri V. Scarabino, 2008 - (FUSTIARIIDAE)
- steinheimensis, Triptychia steinheimensis (Quenstedt, 1884) † - (FILHOLIIDAE) (FOSSIL)
- steinheimensis, Bythiospeum steinheimensis (F. Gottschick, 1921 †) - (HYDROBIIDAE) (FOSSIL)
- steinheimensis, Bania pseudoglobula steinheimensis (Miller, 1900 †) - (HYDROBIIDAE) (FOSSIL)
- steinheimensis, Gyraulus steinheimensis (F.M. Hilgendorf, 1867 ) - (PLANORBIDAE)
- steinheimensis, Vitrea steinheimensis F. Gottschick, 1920 † - (PRISTILOMATIDAE) (FOSSIL)
- steinheimensis, Pupilla steinheimensis (Miller, 1900) † - (PUPILLIDAE) (FOSSIL)
- steini, Sphaerium steini A. Schmidt, 1858 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- steinii, Marstoniopsis steinii (E.C. Von Martens, 1858) - (AMNICOLIDAE)
- steinii, Marstoniopsis steinii E.C. Von Martens, 1858 - syn of: Marstoniopsis steinii (E.C. Von Martens, 1858) - (AMNICOLIDAE)
- steiningeri, Triptychia steiningeri Schnabel, 2006 † - (FILHOLIIDAE) (FOSSIL)
- steiningeri, Episfaxis steiningeri (E.F.R.K. Koken, 1889 †) - (MICRODOMATIDAE) (FOSSIL)
- steiningeri, Ormoceras steiningeri Barrande, 1868 † - (ORMOCERATIDAE) (FOSSIL)
- steiningeri, Turritella steiningeri M. Harzhauser, 2007 † - (TURRITELLIDAE) (FOSSIL)
- steinkei, Venidia steinkei Clark & J.W. Durham, 1946 † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- steinkei, Cyclocardia steinkei Clark & J.W. Durham, 1946 † - (CARDITIDAE) (FOSSIL)
- Steinmanella, Genus Steinmanella Crickmay, 1930 † (STEINMANELLIDAE) (FOSSIL)
- STEINMANELLIDAE van Hoepen, 1929 † - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-TRIGONIIDA [Order]-MYOPHORELLOIDEA [Superfamily]) (FOSSIL)
- steinmani, Barrancyloceras steinmani (Batsevich, 1873 †) - (CRIOCERATITIDAE) (FOSSIL)
- steinmanni, Syrotrigonia steinmanni (Lisson, 1930 †) - (BUCHOTRIGONIIDAE) (FOSSIL)
- steinmanni, Clymenia steinmanni Wedekind, 1908 † - syn of: Rectoclymenia steinmanni (Wedekind, 1908 †) - (CLYMENIIDAE) (FOSSIL)
- steinmanni, Pachydiscus steinmanni (Paulcke, 1907 †) - (DESMOCERATIDAE) (FOSSIL)
- steinmanni, Isohoplites steinmanni (Jacob, 1907 †) - (HOPLITIDAE) (FOSSIL)
- steinmanni, Inoceramus steinmanni R.O. Wilckens, 1907 † - (INOCERAMIDAE) (FOSSIL)
- steinmanni, Oxyperas steinmanni A.A. Olsson, 1931 † - (MACTRIDAE) (FOSSIL)
- steinmanni, Platyceras steinmanni A.H. Clarke, 1899 † - (PLATYCERATIDAE) (FOSSIL)
- steinmanni, Protancyloceras steinmanni (Rivera, 1951 †) - (PROTANCYLOCERATIDAE) (FOSSIL)
- steinmanni, Rectoclymenia steinmanni (Wedekind, 1908 †) - (RECTOCLYMENIIDAE) (FOSSIL)
- steinmanni, Kugleria steinmanni (Schnarrenberger 1901) † - (REQUIENIIDAE) (FOSSIL)
- steinmanni, Lilloettia steinmanni (Spath, 1928 †) - (SPHAEROCERATIDAE) (FOSSIL)
- steinmanni, Weaverella steinmanni (Philippi, 1899) † - (STEINMANELLIDAE) (FOSSIL)
- steinmanni, Struthiolarella steinmanni J.D. Stilwell & Zinsmeister, 1992 † - (STRUTHIOLARIIDAE) (FOSSIL)
- steinmanni, Tissotia steinmanni Lissón, 1908 † - (TISSOTIIDAE) (FOSSIL)
- steinmanni, Palaeophyllites steinmanni Welter, 1922 † - (USSURITIDAE) (FOSSIL)
- Steinmannites, Genus Steinmannites Mojsisovics , 1893 † (STEINMANNITIDAE) (FOSSIL)
- STEINMANNITIDAE Tozer, 1994 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-CLYDONITOIDEA [Superfamily]) (FOSSIL)
- steinstansana, Elliptio steinstansana R.I. Johnson & A.H. Clarke, 1983 - (UNIONIDAE)
- steinvorthi, Orthosurcula steinvorthi (A. von Koenen, 1872 †) - (COCHLESPIRIDAE) (FOSSIL)
- steinworthi, Turricula steinworthi (A. von Koenen, 1872 †) - (CLAVATULIDAE) (FOSSIL)
- Steira, syn of: Genus Atlanta C.A. Lesueur, 1817 (ATLANTIDAE)
- steira, Austroturris steira (C. Hedley, 1922) - (BORSONIIDAE)
- steira, Filodrillia steira C. Hedley, 1922 - syn of: Austroturris steira (C. Hedley, 1922) - (BORSONIIDAE)
- Steiraxis, Genus Steiraxis W.H. Dall, 1896 (COCHLESPIRIDAE)
- Steironepion, Genus Steironepion H.A. Pilsbry & R.T. Lowe, 1932 (COLUMBELLIDAE)
- Steirotuba, syn of: Genus Gegania Jeffreys, 1884 † (MATHILDIDAE) (FOSSIL)
- stejnegeri, Turrivolutopsius stejnegeri (W.H. Dall, 1884) - (BUCCINIDAE)
- stejnegeri, Cerithiopsis stejnegeri W.H. Dall, 1884 - (CERITHIOPSIDAE)
- stejnegeri dina, Cerithiopsis stejnegeri dina P. Bartsch, 1911 - (CERITHIOPSIDAE)
- steklovi, Omphiscola steklovi (Kovalenko in V.V. Anistratenko & al., 1991 †) - (LYMNAEIDAE) (FOSSIL)
- steklovi, Pupoides steklovi Prysjazhnjuk in Prysjazhnjuk & al., 1975 † - (PUPILLIDAE) (FOSSIL)
- Steklovia, syn of: Genus Stekloviella A.A. Schileyko, 1979 (HELICIDAE)
- Steklovidiscus, Genus Steklovidiscus Gozhik & Prysjazhnjuk, 1980 † (PLANORBIDAE) (FOSSIL)
- Stekloviella, Genus Stekloviella A.A. Schileyko, 1979 (HELICIDAE)
- stelcki, Hypisculites stelcki (McLearn, 1940 †) - (EPISCULITIDAE) (FOSSIL)
- stelcki, Phormedites stelcki Mojsisovics 1893 † - (PARATHISBITIDAE) (FOSSIL)
- stelcki, Cassowarioides stelcki Johnston & Chatterton, 1983 † - syn of: Cassowarioides perryi Johnston & Chatterton, 1983 † - (PSEUDOBIGALEAIDAE) (FOSSIL)
- stelcki, Tancredia stelcki McLearn, 1945 † - (TANCREDIIDAE) (FOSSIL)
- stelcki, Thracia stelcki McLearn, 1945 † - (THRACIIDAE) (FOSSIL)
- Stelckiceras, Genus Stelckiceras Jeletzky, 1980 † (HOPLITIDAE) (FOSSIL)
- stelfoxi, Europisidium stelfoxi Pirogov & Y.I. Starobogatov in V.J. Timm, 1976 - syn of: Pisidium tenuilineatum A. Stelfox, 1918 - (SPHAERIIDAE)
- stella, Gibberula stella T. McCleery, 2008 - (CYSTISCIDAE)
- stella, Acrimeroceras stella Ebbighausen, Becker & Bockwinkel, 2002 † - (DIMEROCERATIDAE) (FOSSIL)
- stella, Glabrocingulum stella (Winchell, 1862 †) - (GOSSELETINIDAE) (FOSSIL)
- stella, Phyllocheilus stella (A.V.M.D. D'Orbigny, 1850 †) - (HARPAGODIDAE) (FOSSIL)
- stella, Paradasyceras stella (Sowerby, 1833 †) - (JURAPHYLLITIDAE) (FOSSIL)
- stella, Quadratonucula stella Yancey, 1978 † - (MALLETIIDAE) (FOSSIL)
- stella, Nerita stella L.W. Dillwyn, 1817 - syn of: Nerita squamulata E.J. Le Guillou, 1841 - (NERITIDAE)
- stella, Argonerita chamaeleon stella (L.A. Reeve, 1855) - (NERITIDAE)
- stella, Patella stella A. Risso, 1826 - syn of: Patella ferruginea J.F. Gmelin, 1791 - (PATELLIDAE)
- stella, Posidonia stella (W.M. Gabb, 1864 †) - (POSIDONIIDAE) (FOSSIL)
- stella, Posidonomya stella W.M. Gabb, 1864 † - syn of: Posidonia stella (W.M. Gabb, 1864 †) - (POSIDONIIDAE) (FOSSIL)
- stella, Propeamussium stella Z.R. Wang, 1984 - syn of: Propeamussium rubrotinctum (K. Oyama, 1951) - (PROPEAMUSSIIDAE)
- Stella, syn of: Genus Astralium J.H.F. Link, 1807 (TURBINIDAE)
- Stellacaprina, Genus Stellacaprina Mitchell, 2013 † (ANTILLOCAPRINIDAE) (FOSSIL)
- Stellaconus, Genus Stellaconus J.K. Tucker & M.J. Tenorio, 2009 (CONIDAE)
- stellae, Splendrillia stellae P.J. Fallon, 2016 - (DRILLIIDAE)
- stellae, Scissurella stellae C.A. Fleming, 1948 - syn of: Scissurella prendrevillei A.W.B. Powell, 1933 - (SCISSURELLIDAE)
- stellae, Petricola stellae W. Narchi, 1975 - syn of: Petricolaria serrata (G.P. Deshayes, 1853) - (VENERIDAE)
- stellaeformis, Glabrocingulum stellaeformis Hyde, 1953 † - (GOSSELETINIDAE) (FOSSIL)
- stellaeformis, Scutellastra stellaeformis P. Dautzenberg & J.L. Bouge, 1933 - syn of: Scutellastra flexuosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (PATELLIDAE)
- stellaeformis, Scutellastra stellaeformis L.A. Reeve, 1842 - syn of: Scutellastra flexuosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (PATELLIDAE)
- stellaeformis, Patella stellaeformis L.A. Reeve, 1842 - syn of: Scutellastra flexuosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (PATELLIDAE)
- stellaeformis tuamutuensis, Patella stellaeformis tuamutuensis P. Dautzenberg & J.L. Bouge, 1933 - syn of: Scutellastra flexuosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (PATELLIDAE)
- stellamaris, Agagus stellamaris D.G. Herbert, 1991 - (TROCHIDAE)
- stellanum, Epitonium stellanum L.W. Stephenson, 1953 † - (EPITONIIDAE) (FOSSIL)
- stellapolaris, Zerotula stellapolaris A. Warén & S. Hain, 1996 - syn of: Zerotula antarctica (H. Numanami, 1996) - (ZEROTULIDAE)
- stellara, Girtyana stellara Yancey, 1978 † - (NUCULANIDAE) (FOSSIL)
- stellare, Asteroceras stellare (Sowerby, 1815 †) - (ARIETITIDAE) (FOSSIL)
- stellare, Astralium stellare (J.F. Gmelin, 1791) - (TURBINIDAE)
- stellare asteriscus, Astralium stellare asteriscus (L.A. Reeve, 1842) - (TURBINIDAE)
- Stellaria, Genus Stellaria A. Schmidt in H.P.C. Møller, 1832 (XENOPHORIDAE)
- stellaris, Calliotropis stellaris Y.C. Lee & W.L. Wu, 2001 - (CALLIOTROPIDAE)
- stellaris, Actinella lentiginosa stellaris R.T. Lowe, 1852 - (HYGROMIIDAE)
- stellaris, Patelloida stellaris J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Patelloida saccharina (C. Linnaeus, 1758) - (LOTTIIDAE)
- stellaris, Muricodrupa stellaris J.B. Hombron & C.H. Jacquinot in C. Rousseau, 1854 - syn of: Muricodrupa fiscella (J.F. Gmelin, 1791) - (MURICIDAE)
- stellaris, Fluxinella stellaris L. Bozzetti, 2008 - (SEGUENZIIDAE)
- stellarum, Nuculoceras stellarum (Bisat, 1932 †) - (CRAVENOCERATIDAE) (FOSSIL)
- stellarum, Cravenoceratoides stellarum Bisat, 1932 † - syn of: Nuculoceras stellarum (Bisat, 1932 †) - (CRAVENOCERATIDAE) (FOSSIL)
- Stellaspina, syn of: Genus Microhedyle H. Hertling, 1930 (PARHEDYLIDAE)
- stellasteris, Thyca stellasteris F. Koehler & C. Vaney, 1912 - (EULIMIDAE)
- stellasubis, Plectostoma stellasubis (J.J. Vermeulen, 1994) - (DIPLOMMATINIDAE)
- stellata, Aplysia stellata A. Risso, 1818 - syn of: Aplysia punctata (G.L.C.F.D. Cuvier, 1803) - (APLYSIIDAE)
- stellata, Architectonica stellata (R.A. Philippi, 1849) - (ARCHITECTONICIDAE)
- stellata, Arca stellata J.G. Bruguière, 1789 - syn of: Glycymeris stellata (J.G. Bruguière, 1789) - (ARCIDAE)
- stellata, Arene stellata J.H. McLean, 1970 - (ARENEIDAE)
- stellata, Perrinia stellata A. Adams, 1864 - (CHILODONTIDAE)
- stellata, Doriprismatica stellata (W.B. Rudman, 1986) - (CHROMODORIDIDAE)
- stellata, Erosaria stellata J.F. Gmelin, 1791 - syn of: Erosaria helvola (C. Linnaeus, 1758) - (CYPRAEIDAE)
- stellata, Erosaria stellata G. Perry, 1811 - syn of: Erosaria nebrites (J.C. Melvill, 1888) - (CYPRAEIDAE)
- stellata, Thordisa stellata C.N.E. Eliot, 1903 - syn of: Thordisa villosa (J. Alder & A. Hancock, 1864) - (DISCODORIDIDAE)
- stellata, Platydoris stellata R.A. Philippi, 1836 - syn of: Platydoris argo (C. Linnaeus, 1767) - (DISCODORIDIDAE)
- stellata, Doris stellata J.F. Gmelin, 1791 - syn of: Acanthodoris pilosa (P.C. Abildgaard in O.F. Müller, 1789) - (DORIDIDAE)
- stellata, Archidoris stellata Y.S. Minichev, 1972 - syn of: Doris kerguelenensis (L.S.R. Bergh, 1884) - (DORIDIDAE)
- stellata, Entalinopsis stellata V. Scarabino, 1995 - (ENTALINIDAE)
- stellata, Emarginula stellata A. Adams, 1852 - syn of: Montfortula rugosa (J.R.C. Quoy & J.P. Gaimard, 1834) - (FISSURELLIDAE)
- stellata, Fissurella stellata L.A. Reeve, 1850 - syn of: Fissurella cumingii L.A. Reeve, 1849 - (FISSURELLIDAE)
- stellata, Coryphella stellata (W. Stimpson, 1853) - (FLABELLINIDAE)
- stellata, Glycymeris stellata (J.G. Bruguière, 1789) - (GLYCYMERIDIDAE)
- stellata, Okenia stellata W.B. Rudman, 2004 - (GONIODORIDIDAE)
- stellata, Priotrochatella stellata (G.T. Velazquez in F. Poey, 1852) - (HELICINIDAE)
- stellata, Stellatoma stellata (R.E.C. Stearns, 1872) - (MANGELIIDAE)
- stellata, Agathotoma stellata (O.A.L. Mörch, 1860) - (MANGELIIDAE)
- stellata, Mangelia stellata R.E.C. Stearns, 1872 - syn of: Stellatoma stellata (R.E.C. Stearns, 1872) - (MANGELIIDAE)
- stellata, Mangelia stellata R.E.C. Stearns, 1872 - syn of: Stellatoma stellata (R.E.C. Stearns, 1872) - (MANGELIIDAE)
- stellata, Thais stellata P.F. Röding, 1798 - syn of: Stramonita haemastoma (C. Linnaeus, 1767) - (MURICIDAE)
- stellata, Natica stellata C. Hedley, 1913 - (NATICIDAE)
- stellata, Oliva stellata P.L. Duclos, 1835 - syn of: Oliva tigridella stellata (P.L. Duclos, 1835) - (OLIVIDAE)
- stellata, Oliva tigridella stellata (P.L. Duclos, 1835) - (OLIVIDAE)
- stellata, Acanthodoris stellata C. Linnaeus - (ONCHIDORIDIDAE)
- stellata, Acanthodoris stellata A.E. Verrill, 1879 - syn of: Acanthodoris pilosa (P.C. Abildgaard in O.F. Müller, 1789) - (ONCHIDORIDIDAE)
- stellata, Acanthodoris stellata J.F. Gmelin, 1791 - syn of: Acanthodoris pilosa (P.C. Abildgaard in O.F. Müller, 1789) - (ONCHIDORIDIDAE)
- stellata, Ostrea stellata J.F. Gmelin, 1791 - syn of: Saccostrea cucullata (I. von Born, 1778) - (OSTREIDAE)
- stellata, Berthella stellata (A. Risso, 1826) - (PLEUROBRANCHIDAE)
- stellata, Siphonaria stellata (G.S. Helbling, 1779) - (SIPHONARIIDAE)
- stellata, Siphonaria stellata H.M.D. de Blainville, 1827 - syn of: Siphonaria laciniosa (C. Linnaeus, 1758) - (SIPHONARIIDAE)
- stellata, Stomatella stellata (S.M. Souverbie & R.P. Montrouzier, 1863) - (TROCHIDAE)
- stellata, Venus stellata J.F. Gmelin, 1791 - syn of: Glycymeris stellata (J.G. Bruguière, 1789) - (VENERIDAE)
- stellata albocrossata, Berthella stellata albocrossata J. Heller & T.E. Thompson, 1983 - syn of: Berthella stellata (A. Risso, 1826) - (PLEUROBRANCHIDAE)
- stellata filosa, Agathotoma stellata filosa M. Smith, 1951 - (MANGELIIDAE)
- stellata meditteranea, Glycymeris stellata meditteranea A. De Gregorio, 1892 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- stellata pervalida, Glycymeris stellata pervalida A. De Gregorio, 1892 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- stellata umbonata, Glycymeris stellata umbonata A. De Gregorio, 1892 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- stellata vovan, Glycymeris stellata vovan É. Lamy, 1912 - (GLYCYMERIDIDAE)
- Stellatoma, Genus Stellatoma P. Bartsch & H.A. Rehder, 1939 (MANGELIIDAE)
- stellatomoides, Antiguraleus stellatomoides T. Shuto, 1983 - (MANGELIIDAE)
- stellatum, Parvicardium stellatum L.A. Reeve, 1845 - syn of: Parvicardium exiguum (J.F. Gmelin, 1791) - (CARDIIDAE)
- stellatum, Columbarium pagoda stellatum T. Habe, 1953 - (TURBINELLIDAE)
- stellatus, Conus stellatus L.C. Kiener, 1847 - syn of: Darioconus pennaceus (I. von Born, 1778) - (CONIDAE)
- stellatus, Glycymeris stellatus J.G. Bruguière, 1789 - syn of: Glycymeris stellata (J.G. Bruguière, 1789) - (GLYCYMERIDIDAE)
- stellatus, Pecten stellatus L.A. Reeve, 1852 - syn of: Pseudamussium peslutrae (C. Linnaeus, 1771) - (PECTINIDAE)
- stellatus, Trimusculus stellatus (G.B. II Sowerby, 1835) - (TRIMUSCULIDAE)
- stellatus, Trochus stellatus J.F. Gmelin, 1791 - (TROCHIDAE)
- stellatus mediterranea, Glycymeris stellatus mediterranea A. De Gregorio, 1892 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- Stellaxis, Subgenus Architectonica (Stellaxis) W.H. Dall, 1892 † (ARCHITECTONICIDAE) (FOSSIL)
- stelleri, Cryptochiton stelleri (A.T. von Middendorff, 1847) - (MOPALIIDAE)
- stelleri, Turbonilla stelleri P. Bartsch, 1927 - (PYRAMIDELLIDAE)
- stelleri, Valvata stelleri W. Dybowski, 1904 - syn of: Cincinna confusa (C.A. Westerlund, 1897) - (VALVATIDAE)
- stelleri apicalis, Cryptochiton stelleri apicalis H.A. Pilsbry, 1893 - (MOPALIIDAE)
- stelleri violacea, Cryptochiton stelleri violacea A. Nordmann, 1862 - (MOPALIIDAE)
- stelleta, Oliva stelleta P.L. Duclos, 1835 - syn of: Oliva tigridella stellata (P.L. Duclos, 1835) - (OLIVIDAE)
- stellifer, Bornella stellifer (A. Adams & L.A. Reeve in A. Adams, 1848) - (BORNELLIDAE)
- stellifer, Dendronotus stellifer A. Adams & L.A. Reeve, 1848 - syn of: Bornella stellifer (A. Adams & L.A. Reeve in A. Adams, 1848) - (DENDRONOTIDAE)
- stellifera, Discodoris stellifera (H.F.A. von Ihering in A.J.B.M. Vayssière, 1904) - (DISCODORIDIDAE)
- stellifera, Archidoris stellifera H.F.A. von Ihering in A.J.B.M. Vayssière, 1904 - syn of: Discodoris stellifera (H.F.A. von Ihering in A.J.B.M. Vayssière, 1904) - (DORIDIDAE)
- stellifera, Cellana stellifera (J.F. Gmelin, 1791) - (NACELLIDAE)
- stellifera, Patella stellifera J.F. Gmelin, 1791 - syn of: Cellana stellifera (J.F. Gmelin, 1791) - (PATELLIDAE)
- stellifera, Sepia stellifera Homenko & D.N. Khromov, 1984 - (SEPIIDAE)
- stellifera phymatia, Cellana stellifera phymatia (H.H. Suter, 1905) - (NACELLIDAE)
- stelliferus, Succinoides stelliferus A.A. Schileyko, 1967 - (SUCCINEIDAE)
- stellula, Cookeconcha stellula (A.A. Gould, 1844) - (ENDODONTIDAE)
- stellula, Helix stellula A.A. Gould - syn of: Cookeconcha stellula (A.A. Gould, 1844) - (HELICIDAE)
- stellularia, Patella stellularia J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Cellana stellifera (J.F. Gmelin, 1791) - (PATELLIDAE)
- stelmachoetius, Anisus stelmachoetius (J.R. Bourguignat, 1860) - (PLANORBIDAE)
- stelmachoetius notatus, Planorbis stelmachoetius notatus C.A. Westerlund, 1885 - syn of: Anisus stelmachoetius (J.R. Bourguignat, 1860) - (PLANORBIDAE)
- steltenbergensis, Eleutherospira steltenbergensis Heidelberger & Koch, 2005 † - (EUOMPHALIDAE) (FOSSIL)
- steltenbergensis, Murchisonia steltenbergensis Heidelberger & Koch, 2005 † - (MURCHISONIIDAE) (FOSSIL)
- steltenbergensis monocincta, Murchisonia steltenbergensis monocincta Heidelberger & Koch, 2005 † - (MURCHISONIIDAE) (FOSSIL)
- stelus, Follotites stelus D. Korn & al., 2010 † - (MUENSTEROCERATIDAE) (FOSSIL)
- stelzneri, Bostryx stelzneri A. Doering, 1879 - (BULIMULIDAE)
- stelzneri, Clessinia cordovana stelzneri A. Doering, 1874 - (ODONTOSTOMIDAE)
- stelzneri, Trigonia stelzneri Gottsche, 1878 † - (TRIGONIIDAE) (FOSSIL)
- stelzneri apertus, Bostryx stelzneri apertus M.I. Hylton-Scott, 1948 - (BULIMULIDAE)
- stelzneri conispirus, Bostryx stelzneri conispirus (A. Doering, 1879) - (BULIMULIDAE)
- stelzneri conispirus minuta, Bostryx stelzneri conispirus minuta J.J. Parodíz, 1948 - (BULIMULIDAE)
- stelzneri hector, Bostryx stelzneri hector E.L. Holmberg, 1919 - (BULIMULIDAE)
- stelzneri hybrida, Bostryx stelzneri hybrida J.J. Parodíz, 1948 - (BULIMULIDAE)
- stelzneri nonogastanus, Bostryx stelzneri nonogastanus J.J. Parodíz, 1948 - (BULIMULIDAE)
- stelzneri peristomatus, Bostryx stelzneri peristomatus A. Doering, 1879 - (BULIMULIDAE)
- stelzneri peristomatus paraconispirus, Bostryx stelzneri peristomatus paraconispirus J.J. Parodíz, 1948 - (BULIMULIDAE)
- stelzneri scaber, Bostryx stelzneri scaber J.J. Parodíz, 1948 - (BULIMULIDAE)
- stelzneri tinogastanus, Bostryx stelzneri tinogastanus J.J. Parodíz, 1948 - (BULIMULIDAE)
- Stelzneria, Genus Stelzneria Geinitz, 1874 (TROCHIDAE) (FOSSIL)
- stemma, Astyris stemma W.H. Dall, 1927 - (COLUMBELLIDAE)
- Stemmatoceras, Genus Stemmatoceras Imlay, 1967 † (STEPHANOCERATIDAE) (FOSSIL)
- Stemmatopsis, Genus Stemmatopsis J.F. Mabille, 1887 (STREPTAXIDAE)
- Stemmodiscus, syn of: Genus Naesiotus J.A. Albers, 1850 (BULIMULIDAE)
- stemonium, Teinostoma stemonium W.P. Woodring, 1957 † - (TORNIDAE) (FOSSIL)
- Stempelleria, syn of: Genus Philobrya P.P. Carpenter, 1872 (PHILOBRYIDAE)
- Stempellia, syn of: Genus Philobrya P.P. Carpenter, 1872 (PHILOBRYIDAE)
- Stemtonoceras, Genus Stemtonoceras Ulrich & Foerste, 1936 † (ELLESMEROCERATIDAE) (FOSSIL)
- stena, Ochetoclava stena (W.P. Woodring, 1928 †) - (CERITHIIDAE) (FOSSIL)
- stena, Caryocorbula oropendula stena W.P. Woodring, 1982 - (CORBULIDAE)
- stena, Adrana stena W.P. Woodring, 1973 † - (NUCULANIDAE) (FOSSIL)
- Stenabralia, syn of: Genus Abralia J.E. Gray, 1849 (ENOPLOTEUTHIDAE)
- Stenacapha, Genus Stenacapha B.J. Smith & J.A. Kershaw, 1985 (CHAROPIDAE)
- stenacme, Bulimus stenacme L. Pfeiffer, 1857 - syn of: Bostryx nigropileatus L.A. Reeve, 1849 - (BULIMULIDAE)
- Stenacme, syn of: Genus Alexania E. Strand, 1928 (EPITONIIDAE)
- stenacostata, Lima stenacostata W.P. Woodring, 1928 † - (LIMIDAE) (FOSSIL)
- stenacostato, Lima stenacostato W.P. Woodring, 1928 † - (LIMIDAE) (FOSSIL)
- Stenarcestes, Genus Stenarcestes Mojsisovics , 1896 † (ARCESTIDAE) (FOSSIL)
- stenarochila, Helix stenarochila W. Kobelt, 1895 - syn of: Eobania vermiculata (O.F. Müller, 1774) - (HELICIDAE)
- Stenelasma, syn of: Genus Hemistena C.S. Rafinesque, 1820 (UNIONIDAE)
- steneligma, Trochulus steneligma J.R. Bourguignat in J.F. Mabille, 1877 - syn of: Trichia hispida (C. Linnaeus, 1758) - (HYGROMIIDAE)
- steneus, Murex steneus Š. Brusina, 1870 - syn of: Hexaplex trunculus (C. Linnaeus, 1758) - (MURICIDAE)
- stenhousei, Cardiomya stenhousei (J. Marwick, 1931 †) - (CUSPIDARIIDAE) (FOSSIL)
- stenidia, Armina stenidia L.S.R. Bergh, 1905 - (ARMINIDAE)
- Stenobralia, syn of: Genus Abralia J.E. Gray, 1849 (ENOPLOTEUTHIDAE)
- Stenocadoceras, Genus Stenocadoceras Imlay , 1953 † (CADOCERATIDAE) (FOSSIL)
- Stenocapha, syn of: Subgenus Therasia (Phenacohelix) H.H. Suter, 1892 (CHAROPIDAE)
- Stenochaena, Genus Stenochaena Carter (GASTROCHAENIDAE) (FOSSIL)
- stenochila, Sinicola stenochila (O.F. von Möllendorff, 1885) - (PLECTOPYLIDAE)
- Stenochiton, Genus Stenochiton H. Adams & G.F. Angas, 1864 (ISCHNOCHITONIDAE)
- stenochone, Laeocathaica stenochone O.F. von Möllendorff, 1899 - (BRADYBAENIDAE)
- stenochora, Lapparentia stenochora A.E.M. Cossmann, 1888 † - (HYDROBIIDAE) (FOSSIL)
- stenochora, Tellina stenochora A.E.M. Cossmann, 1886 † - (TELLINIDAE) (FOSSIL)
- stenochorias, Ancylastrum stenochorias J.C. Melvill & J.H. Ponsonby, 1903 - (PLANORBIDAE)
- stenocion, Coelocentrum stenocion F.G. Thompson, 1968 - (UROCOPTIDAE)
- Stenocista, Genus Stenocista P.G. Oliver & R. von Cosel, 1993 (NOETIIDAE)
- Stenoclymenia, Genus Stenoclymenia Lange, 1929 † (PLATYCLYMENIIDAE) (FOSSIL)
- Stenocolpus, Genus Stenocolpus Yamani, 1982 † (PARALLELODONTIDAE) (FOSSIL)
- stenoconicum, Yanheceras stenoconicum B.Z. Li, 1984 † - (YANHECERIDA (UNASSIGNED)) (FOSSIL)
- Stenoconites, Genus Stenoconites Gordon , 1966 † (AULACOCERATIDAE) (FOSSIL)
- stenocycloides, Dichotomoceras stenocycloides (Siemiradzki, 1898 †) - (PERISPHINCTIDAE) (FOSSIL)
- Stenocyclus, Genus Stenocyclus Schindewolf, 1951 † (PERICYCLIDAE) (FOSSIL)
- stenocyclus, Perisphinctes stenocyclus (C.F. Fontannes, 1879 †) - (PERISPHINCTIDAE) (FOSSIL)
- stenocyma, Horaiclavus stenocyma J.T. Kuroda, T. Habe & K. Oyama, 1971 - (HORAICLAVIDAE)
- stenodactyla, Euprymna stenodactyla (R.E. Grant, 1833) - (SEPIOLIDAE)
- stenodeum, Cerithium stenodeum É.A.A. Locard, 1886 - syn of: Cerithium protractum Ant. Bivona-Bernardi in And. Bivona-Bernardi, 1838 - (CERITHIIDAE)
- Stenodomatoceras, Genus Stenodomatoceras Ruzhentsev & Shimanskiy, 1954 † (DOMATOCERATIDAE) (FOSSIL)
- Stenodrillia, Genus Stenodrillia I.A. Korobkov, 1955 (DRILLIIDAE)
- Stenoglaphyrites, Genus Stenoglaphyrites Ruzhentsev & Bogoslovskaya, 1971 † (STENOGLAPHYRITIDAE) (FOSSIL)
- STENOGLAPHYRITIDAE Ruzhencev & Bogoslovskaya, 1971 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-SOMOHOLITOIDEA [Superfamily]) (FOSSIL)
- Stenogomphoceras, Genus Stenogomphoceras Foerste, 1930 † (TRIMEROCERATIDAE) (FOSSIL)
- stenogyra, Macrochlamys stenogyra O.F. von Möllendorff, 1901 - (ARIOPHANTIDAE)
- stenogyra, Kaliella stenogyra A. Adams, 1868 - (CHRONIDAE)
- stenogyra, Scaea stenogyra R.A. Philippi, 1844 - syn of: Limacina retroversa (J. Fleming, 1823) - (LIMACINIDAE)
- stenogyra, Turbonilla stenogyra W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- stenogyra, Systrophia stenogyra (L. Pfeiffer, 1854) - (SCOLODONTIDAE)
- Stenogyra, Subgenus Obeliscus (Stenogyra) R.J. Shuttleworth, 1854 (SUBULINIDAE)
- stenogyroides, Naesiotus stenogyroides (R.J.L. Guppy, 1868) - (BULIMULIDAE)
- Stenogyropsis, Subgenus Pseudobuliminus (Stenogyropsis) O.F. von Möllendorff, 1899 (BRADYBAENIDAE)
- stenogyrus, Turbo stenogyrus P. Fischer, 1873 - (TURBINIDAE)
- STENOLAPHYRITIDAE - syn of Family: STENOGLAPHYRITIDAE (FOSSIL)
- Stenolena, Genus Stenolena W.H. Dall, P. Bartsch & H.A. Rehder, 1938 (CONDYLOCARDIIDAE)
- stenolobatum, Gastrioceras stenolobatum Miller & Cline, 1934 † - syn of: Stenolobulites simulator (Girty, 1910 †) - (GASTRIOCERATIDAE) (FOSSIL)
- stenoloboide, Stenocadoceras stenoloboide (Pompeckj, 1900 †) - (CADOCERATIDAE) (FOSSIL)
- Stenolobulites, Genus Stenolobulites Mikesh & al., 1988 † (PARAGASTRIOCERATIDAE) (FOSSIL)
- stenolobulus, Stenolobulites stenolobulus Mikesh & al., 1988 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- stenolobum, Rondiceras stenolobum (Keyserling, 1846 †) - (CARDIOCERATIDAE) (FOSSIL)
- stenolopha, Alvania stenolopha P. Bouchet & A. Warén, 1993 - (RISSOIDAE)
- Stenoloron, Genus Stenoloron Oehlert & Oehlert, 1888 † (GOSSELETINIDAE) (FOSSIL)
- Stenomarconia, Subgenus Marconia (Stenomarconia) J. Germain, 1934 (STREPTAXIDAE)
- Stenomelania, Genus Stenomelania P. Fischer, 1885 (THIARIDAE)
- stenomphala, Aegista stenomphala J.T. Kuroda & T. Habe - (BRADYBAENIDAE)
- stenomphala, Astele stenomphala E.A. Smith, 1898 - (CALLIOSTOMATIDAE)
- stenomphala, Chloritis miara stenomphala A.R.J.B. Bavay & P. Dautzenberg, 1909 - (CAMAENIDAE)
- stenomphala, Trigonaphera stenomphala T. Habe, 1961 - (CANCELLARIIDAE)
- stenomphala, Cyrtoclymenia stenomphala Petter, 1960 † - (CYRTOCLYMENIIDAE) (FOSSIL)
- stenomphala, Niso stenomphala J.T. Kuroda & T. Habe, 1950 - (EULIMIDAE)
- stenomphala, Josephinella stenomphala (K.T. Menke, 1830) - (HELICIDAE)
- stenomphala, Stenoclymenia stenomphala C.N. Lange, 1929 † - (PLATYCLYMENIIDAE) (FOSSIL)
- stenomphala, Sinicola stenomphala B. Páll-Gergely & A. Hunyadi, 2013 - (PLECTOPYLIDAE)
- stenomphala, Fluxinella stenomphala (J.C. Melvill, 1910) - (SEGUENZIIDAE)
- stenomphala, Episcynia stenomphala (J.C. Melvill, 1910) - (TORNIDAE)
- stenomphala albanica, Josephinella stenomphala albanica S.G.A. Jaeckel, 1954 - (HELICIDAE)
- Stenomphalia, Genus Stenomphalia W.A. Lindholm, 1927 (HYGROMIIDAE)
- stenomphalum, Planammatoceras stenomphalum (Prinz, 1904 †) - (HAMMATOCERATIDAE) (FOSSIL)
- stenomphalum, Oxynoticeras stenomphalum Dumortier, 1914 † - (OXYNOTICERATIDAE) (FOSSIL)
- stenomphalus, Cyclophorus stenomphalus L. Pfeiffer, 1846 - (CYCLOPHORIDAE)
- stenomphalus, Kitchinites stenomphalus Summesberger, 1979 † - (DESMOCERATIDAE) (FOSSIL)
- stenomphalus, Latirus stenomphalus T. Habe & S. Kosuge, 1966 - (FASCIOLARIIDAE)
- stenomphalus, Glaphyrites stenomphalus Delepine, 1941 † - (GLAPHYRITIDAE) (FOSSIL)
- stenomphalus, Eothinites stenomphalus Ruzhentsev, 1956 † - (METALEGOCERATIDAE) (FOSSIL)
- Stenomphalus, Subgenus Ecphora (Stenomphalus) Sandberger, 1861 † (MURICIDAE) (FOSSIL)
- stenomphalus, Nautilus stenomphalus Sowerby, 1849 - (NAUTILIDAE)
- stenomphalus, Segmentina stenomphalus (Š. Brusina, 1902 †) - (PLANORBIDAE) (FOSSIL)
- stenomphalus, Bojarkia stenomphalus (Pavlow, 1890 †) - (POLYPTYCHITIDAE) (FOSSIL)
- stenopa, Natica stenopa W.P. Woodring, 1957 - (NATICIDAE)
- Stenopharciceras, Genus Stenopharciceras Montesinos & Henn, 1986 † (PHARCICERATIDAE) (FOSSIL)
- Stenophyllites, Genus Stenophyllites Tozer , 1994 † (PALAEOPHYLLITIDAE) (FOSSIL)
- Stenophysa, Subgenus Aplexa (Stenophysa) E.C. Von Martens, 1898 (PHYSIDAE)
- Stenoplax, Genus Stenoplax W.H. Dall, 1879 (ISCHNOCHITONIDAE)
- stenopleuris, Kaliella stenopleuris O.F. von Möllendorff, 1887 - (CHRONIDAE)
- Stenopoceras, Genus Stenopoceras Hyatt, 1893 † (GRYPOCERATIDAE) (FOSSIL)
- Stenopoma, syn of: Genus Septaria A.E.J. Férussac, 1807 (NERITIDAE)
- Stenopopanoceras, Genus Stenopopanoceras Popov , 1961 † (PARAPOPANOCERATIDAE) (FOSSIL)
- Stenopronorites, Genus Stenopronorites Schindewolf , 1934 † (PRONORITIDAE) (FOSSIL)
- stenopsis, Chloraea stenopsis A. Moquin-Tandon, 1856 - (BRADYBAENIDAE)
- stenoptera, Helicaulax stenoptera (G.A. Goldfuss, 1844 †) - (APORRHAIDAE) (FOSSIL)
- stenoptera, Rostellaria stenoptera G.A. Goldfuss, 1844 - syn of: Helicaulax stenoptera (G.A. Goldfuss, 1844 †) - (ROSTELLARIIDAE)
- Stenoptyx, syn of: Genus Selenoptyx H.A. Pilsbry, 1908 (CLAUSILIIDAE)
- Stenopus, syn of: Genus Habroconus P. Fischer & J.C.H. Crosse, 1872 (EUCONULIDAE)
- stenopus, Acinolaemus stenopus F.G. Thompson & E.S. Upatham, 1997 - (HYPSELOSTOMATIDAE)
- stenopylis, Sinoennea stenopylis W.H. Benson - (DIAPHERIDAE)
- Stenopylis, Genus Stenopylis H.C. Fulton, 1914 (HELICODISCIDAE)
- stenopylis, Holospira stenopylis H.A. Pilsbry, 1953 - (UROCOPTIDAE)
- stenopyrgisca, Seila stenopyrgisca Darragh, 2017 † - (CERITHIOPSIDAE) (FOSSIL)
- Stenoradsia, Subgenus Stenoplax (Stenoradsia) P.P. Carpenter in W.H. Dall, 1879 (ISCHNOCHITONIDAE)
- Stenorhachiodon, syn of: Genus Schistophallus A. Wagner, 1914 (ZONITIDAE)
- Stenorhyscala, syn of: Genus Sthenorytis T.A. Conrad, 1862 (EPITONIIDAE)
- Stenorhytis, syn of: Genus Sthenorytis T.A. Conrad, 1862 (EPITONIIDAE)
- Stenorhytiscala, syn of: Genus Sthenorytis T.A. Conrad, 1862 (EPITONIIDAE)
- stenos, Bathytoma stenos N. Puillandre, A.V. Sysoev & P. Bouchet, 2010 - (BORSONIIDAE)
- stenos, Inquisitor stenos A.V. Sysoev, 1996 - (PSEUDOMELATOMIDAE)
- stenoschiza, Fustiaria stenoschiza (H.A. Pilsbry & B. Sharp, 1897) - (FUSTIARIIDAE)
- stenoschizum, Dentalium stenoschizum H.A. Pilsbry & B. Sharp, 1897 - syn of: Fustiaria stenoschiza (H.A. Pilsbry & B. Sharp, 1897) - (DENTALIIDAE)
- stenosellatum, Jinjiangoceras stenosellatum (Chao & Liang, 1966 †) - (ARAXOCERATIDAE) (FOSSIL)
- stenosellatus, Epadrianites stenosellatus Liang, 1982 † - (ADRIANITIDAE) (FOSSIL)
- stenosellatus, Pseudaspidites stenosellatus Chao, 1959 † - syn of: Pseudaspidites muthianus (Krafft & Diener, 1909 †) - (PROPTYCHITIDAE) (FOSSIL)
- Stenosemus, Subgenus Ischnochiton (Stenosemus) A.T. von Middendorff, 1847 (ISCHNOCHITONIDAE)
- Stenosiphon, Genus Stenosiphon Flower 1956 (PROTEROCAMEROCERATIDAE) (FOSSIL)
- stenospinus, Babelomurex stenospinus (J.T. Kuroda, 1961) - (MURICIDAE)
- stenospira, Megalophaedusa stenospira (A. Adams, 1868) - (CLAUSILIIDAE)
- stenospira, Discus stenospira (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (DISCIDAE) (FOSSIL)
- stenostema, Medora stenostema E.A. Rossmässler, 1839 - syn of: Medora stenostoma (E.A. Rossmässler, 1839) - (CLAUSILIIDAE)
- stenostoma, Agardhiella stenostoma (K. Flach, 1890) - (ARGNIDAE)
- stenostoma, Medora stenostoma (E.A. Rossmässler, 1839) - (CLAUSILIIDAE)
- stenostoma, Conasprella stenostoma (Sowerby, 1850 †) - (CONIDAE) (FOSSIL)
- stenostoma, Theobaldius stenostoma (G.B. I Sowerby, 1843) - (CYCLOPHORIDAE)
- stenostoma, Melampus stenostoma L. Pfeiffer, 1857 - syn of: Melampus bullaoides (G. Montagu, 1808) - (ELLOBIIDAE)
- stenostoma, Haliella stenostoma (J.G. Jeffreys, 1858) - (EULIMIDAE)
- stenostoma, Fagotia stenostoma J.R. Bourguignat, 1884 - syn of: Esperiana esperi (A.E.J. Férussac, 1823) - (MELANOPSIDAE)
- stenostoma, Timbellus stenostoma (R. Houart, 1991) - (MURICIDAE)
- stenostoma, Planorbarius stenostoma (J.R. Bourguignat in G. Servain, 1881) - (PLANORBIDAE)
- Stenostoma, syn of: Genus Stenotrema C.S. Rafinesque, 1819 (POLYGYRIDAE)
- stenostoma, Stenothyroides stenostoma (Š. Brusina, 1902 †) - (STENOTHYRIDAE) (FOSSIL)
- stenostoma, Melania parvula stenostoma C.A. Westerlund, 1886 - (THIARIDAE)
- stenostoma anguis, Theobaldius stenostoma anguis (S.C.T. Hanley & W. Theobald, 1875) - (CYCLOPHORIDAE)
- stenostoma klemmi, Medora stenostoma klemmi H. Nordsieck, 1970 - (CLAUSILIIDAE)
- stenostomus, Arcestes stenostomus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- stenostomus, Discartemon stenostomus W.S.S. Van Benthem-Jutting, 1954 - (STREPTAXIDAE)
- stenostrepta, Systrophia stenostrepta (L. Pfeiffer, 1856) - (SCOLODONTIDAE)
- stenostrepta declinata, Systrophia stenostrepta declinata (H.A. Pilsbry, 1900) - (SCOLODONTIDAE)
- Stenostylus, Genus Stenostylus H.A. Pilsbry, 1898 (ORTHALICIDAE)
- stenotella, Kurtziella stenotella W.P. Woodring, 1970 † - (MANGELIIDAE) (FOSSIL)
- Stenotheca, Genus Stenotheca Hicks, 1872 † (STENOTHECIDAE) (FOSSIL)
- Stenothecella, Genus Stenothecella Aksarina, 1978 † (STENOTHECOIDA INCERTAE SEDIS) (FOSSIL)
- STENOTHECIDAE Runnegar & Jell, 1980 † - Family (HELCIONELLOIDA-ARCHAEOBRANCHIA [Subclass]-HELCIONELLIFORMES [Order]-YOCHELCIONELLOIDEA [Superfamily]) (FOSSIL)
- STENOTHECOIDA INCERTAE SEDIS † - Family (STENOTHECOIDA-) (FOSSIL)
- Stenothecoides, Genus Stenothecoides Resser , 1938 † (CAMBRIDIIDAE) (FOSSIL)
- stenothyra, Phaedusa stenothyra O.F. von Möllendorff, 1901 - (CLAUSILIIDAE)
- Stenothyra, Genus Stenothyra W.H. Benson, 1856 (STENOTHYRIDAE)
- Stenothyrella, Genus Stenothyrella Wenz, 1939 † (STENOTHYRIDAE) (FOSSIL)
- STENOTHYRIDAE Tryon, 1866 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- stenothyroides, Bithynia stenothyroides (W.L.H. Dohrn, 1857) - (BITHYNIIDAE)
- Stenothyroides, Subgenus Stenothyra (Stenothyroides) Lozouet, 1985 † (STENOTHYRIDAE) (FOSSIL)
- Stenothyropsis, Genus Stenothyropsis Kadolsky, 1988 † (STENOTHYRIDAE) (FOSSIL)
- Stenotis, Genus Stenotis A. Adams, 1863 (VANIKORIDAE)
- stenotoreton, Plectostoma stenotoreton (J.J. Vermeulen, 1994) - (DIPLOMMATINIDAE)
- stenotrema, Phaedusa stenotrema F.G. Thompson & S.P. Dance, 1983 - syn of: Phaedusa filicostata stenotrema F.G. Thompson & S.P. Dance, 1983 - (CLAUSILIIDAE)
- stenotrema, Phaedusa filicostata stenotrema F.G. Thompson & S.P. Dance, 1983 - (CLAUSILIIDAE)
- Stenotrema, Genus Stenotrema C.S. Rafinesque, 1819 (POLYGYRIDAE)
- stenotrema, Stenotrema stenotrema L. Pfeiffer, 1842 - (POLYGYRIDAE)
- stenotrema, Guillarmodia stenotrema (F.G. Thompson, 1995) - (SPIRAXIDAE)
- stenotrema, Valvata stenotrema (W. Polinski) - (VALVATIDAE)
- stenotrochus, Arinia stenotrochus J.J. Vermeulen, 1996 - (DIPLOMMATINIDAE)
- stenotrochus anisopleuron, Arinia stenotrochus anisopleuron J.J. Vermeulen, 1996 - (DIPLOMMATINIDAE)
- stenotrochus pachystoma, Arinia stenotrochus pachystoma J.J. Vermeulen, 1996 - (DIPLOMMATINIDAE)
- Stenotropis, Subgenus Omphalotropis (Stenotropis) W. Kobelt & O.F. von Möllendorff, 1898 (ASSIMINEIDAE)
- stenotrypta, Helix stenotrypta A. Braun, 1851 † - syn of: Archaeoplecta lapidaria (Thomä, 1845 †) - (HELICIDAE) (FOSSIL)
- stenoventrum, Etoushanoceras stenoventrum Yang & Xiong, 1990 † - (ARAXOCERATIDAE) (FOSSIL)
- stenozona, Satsuma mellea stenozona (O.F. von Möllendorff, 1884) - (CAMAENIDAE)
- stenozona, Helix stenozona O.F. von Möllendorff, 1884 - syn of: Satsuma mellea stenozona (O.F. von Möllendorff, 1884) - (HELICIDAE)
- Stenozone, Genus Stenozone Batten , 1972 † (GOSSELETINIDAE) (FOSSIL)
- stenroosi, Helix stenroosi C.A. Westerlund, 1898 - syn of: Mesasiata duplocincta (E.C. Von Martens, 1879) - (HELICIDAE)
- stenroosi tetrica, Helix stenroosi tetrica C.A. Westerlund, 1898 - syn of: Mesasiata duplocincta (E.C. Von Martens, 1879) - (HELICIDAE)
- stensioei, Diestoceras stensioei Troedsson, 1926 † - (DIESTOCERATIDAE) (FOSSIL)
- stentina, Ostrea stentina B.C.M. Payraudeau, 1826 - (OSTREIDAE)
- stentina capsa, Ostrea stentina capsa G. Fischer von Waldheim, 1807 - (OSTREIDAE)
- stentina isseli, Ostrea stentina isseli M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - (OSTREIDAE)
- stentina pepratxi, Ostrea stentina pepratxi M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - (OSTREIDAE)
- stentina prepratxi, Ostrea stentina prepratxi M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1887 - syn of: Ostrea stentina B.C.M. Payraudeau, 1826 - (OSTREIDAE)
- stentina syriaca, Ostrea stentina syriaca P.M. Pallary, 1933 - (OSTREIDAE)
- stentor, Acantholytoceras stentor (F.M. Anderson, 1938 †) - (MACROSCAPHITIDAE) (FOSSIL)
- stentzi, Helix stentzi E.A. Rossmässler - syn of: Arianta arbustorum (C. Linnaeus, 1758) - (HELICIDAE)
- stenumbilicatum, Beloceras stenumbilicatum Bogoslovsky, 1958 † - (BELOCERATIDAE) (FOSSIL)
- stenumbilicatus, Goniatites stenumbilicatus Kullmann, 1961 † - (GONIATITIDAE) (FOSSIL)
- stenuras, Limax stenuras H. Strebel & G.J. Pfeffer, 1880 - syn of: Deroceras laeve (O.F. Müller, 1774) - (LIMACIDAE)
- stenus, Eoasianites stenus Ruzhentsev, 1978 † - (NEOICOCERATIDAE) (FOSSIL)
- stenygra, Glyptoactis stenygra W.P. Woodring, 1982 † - (CARDITIDAE) (FOSSIL)
- stenygra, Persicula propeobesa stenygra W.P. Woodring, 1970 - (CYSTISCIDAE)
- stenzeli, Pterynotus stenzeli E.H. Vokes, 1970 † - (MURICIDAE) (FOSSIL)
- stenzeli, Vaderos stenzeli G.F. Harris & K.V.W. Palmer, 1946 † - (RIMELLIDAE) (FOSSIL)
- stenzeli, Nelltia stenzeli (H.B. Stenzel, 1952 †) - (TELLINIDAE) (FOSSIL)
- stenzeli, Athleta stenzeli Plummer † - (VOLUTIDAE) (FOSSIL)
- Stenzelia, Genus Stenzelia Macneil, 1954 (ARCIDA (UNASSIGNED)) (FOSSIL)
- Stenzeloceras, Genus Stenzeloceras Whetstone & Teichert, 1978 † (NAUTILIDAE) (FOSSIL)
- stenzii, Charpentieria stenzii (E.A. Rossmässler, 1836) - (CLAUSILIIDAE)
- stenzii, Arianta stenzii (E.A. Rossmässler, 1835) - (HELICIDAE)
- stenzii butoti, Charpentieria stenzii butoti R.A. Bank, 1987 - (CLAUSILIIDAE)
- stenzii cincta, Charpentieria stenzii cincta (L. Brumati, 1838) - (CLAUSILIIDAE)
- stenzii costulatostriata, Charpentieria stenzii costulatostriata (C.A. Westerlund, 1878) - (CLAUSILIIDAE)
- stenzii faueri, Charpentieria stenzii faueri R.A. Bank, 1987 - (CLAUSILIIDAE)
- stenzii letochana, Charpentieria stenzii letochana (P.V. Gredler, 1874) - (CLAUSILIIDAE)
- stenzii nordsiecki, Charpentieria stenzii nordsiecki W.A. Fauer, 1990 - (CLAUSILIIDAE)
- stenzii paroliniana, Charpentieria stenzii paroliniana (F.E. De Betta & P. Martinati, 1855) - (CLAUSILIIDAE)
- stenzii westerlundi, Charpentieria stenzii westerlundi H. Nordsieck, 1993 - (CLAUSILIIDAE)
- Steorra, Genus Steorra Stanisic, 2010 (CAMAENIDAE)
- stepanovi, Aphanaia stepanovi Muromtseva, 1984 † - (ATOMODESMATIDAE) (FOSSIL)
- stepanovi, Aviculopecten stepanovi Kulikov, 1967 † - syn of: Aviculopecten orientalis Fredericks, 1934 † - (AVICULOPECTINIDAE) (FOSSIL)
- stepanovi, Alibashites stepanovi W. Korn & Ghaderi, 2015 † - (DZHULFITIDAE) (FOSSIL)
- stepanovi, Paragastrioceras stepanovi Andrianov, 1985 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- Stephacharopa, Genus Stephacharopa F.A.W. Miquel & J.F. Araya, 2013 (CHAROPIDAE)
- Stephaconus, syn of: Genus Ocruranus Liu, 1979 † (HALKIERIIDAE) (FOSSIL)
- Stephadiscus, Genus Stephadiscus M.I. Hylton-Scott, 1982 (ENDODONTIDAE)
- stephana, Costellaria stephana C.N. Cate, 1963 - syn of: Vexillum interstriatum (G.B. II Sowerby, 1870) - (COSTELLARIIDAE)
- stephana, Nucula stephana Henry, 1876 † - (NUCULIDAE) (FOSSIL)
- stephanense, Architectonica stephanense A.E.M. Cossmann & M.A. Peyrot, 1921 † - (ARCHITECTONICIDAE) (FOSSIL)
- stephanense, Plesiotrochus stephanense A.E.M. Cossmann & M.A. Peyrot, 1922 † - (PLESIOTROCHIDAE) (FOSSIL)
- stephanense, Vasum stephanense M.A. Peyrot, 1928 † - (TURBINELLIDAE) (FOSSIL)
- stephanensis, Anatoma stephanensis P. Lozouet, 1986 - (ANATOMIDAE)
- stephanensis, Pollia stephanensis M.A. Peyrot, 1924 † - (BUCCINIDAE) (FOSSIL)
- stephanensis, Bartlettia stephanensis S. Moricand, 1856 - syn of: Bartlettia stefanensis (S. Moricand, 1856) - (ETHERIIDAE)
- stephanensis, Alvania stephanensis P. Lozouet, 1998 † - (RISSOIDAE) (FOSSIL)
- stephanensis, Turritella stephanensis A.E.M. Cossmann & M.A. Peyrot, 1921 † - (TURRITELLIDAE) (FOSSIL)
- stephanensis?, Pollia stephanensis? M.A. Peyrot, 1924 - (BUCCINIDAE)
- stephanephorum, Solarium stephanephorum C.J. Maury, 1912 † - (ARCHITECTONICIDAE) (FOSSIL)
- stephani, Pseudoshirbuirnia stephani (Buckman, 1910 †) - (SONNINIIDAE) (FOSSIL)
- stephani, Shirbuirnia stephani Buckman, 1910 † - syn of: Pseudoshirbuirnia stephani (Buckman, 1910 †) - (SONNINIIDAE) (FOSSIL)
- stephani, Circulus stephani E. Rolán & P. Ryall, 2002 - (TORNIDAE)
- stephani, Turris stephani P.F. Röding, 1798 - syn of: Clavus lividus (C. Linnaeus, 1758) - (TURRIDAE)
- Stephania, Genus Stephania Esu & Girotti, 1975 † (VIVIPARIDAE) (FOSSIL)
- stephaniae, Spikebuccinum stephaniae M.G. Harasewych & Y.I. Kantor, 2004 - (BUCCINIDAE)
- stephaniae, Falsimargarita stephaniae E. de C. Rios & L.R.L. Simone, 2005 - (CALLIOSTOMATIDAE)
- stephaniae, Abchasohela stephaniae (V. Hüdec & G.I. Lezhawa, 1970) - (HYGROMIIDAE)
- stephaniae, Marginella stephaniae Da Costa, 1867 † - (MARGINELLIDAE) (FOSSIL)
- stephaniae, Myadora stephaniae G.S. Carter, 1972 † - (MYOCHAMIDAE) (FOSSIL)
- stephaniana, Cecilioides stephaniana (L. Benoit, 1862) - (FERUSSACIIDAE)
- stephanica, Seguenzia stephanica W.H. Dall, 1908 - (SEGUENZIIDAE)
- stephanicus, Xanthochorus stephanicus DeVries, 2005 † - (MURICIDAE) (FOSSIL)
- stephanieae, Berghia stephanieae (Á. Valdés, 2005) - (AEOLIDIIDAE)
- stephaniens, Xanthochorus stephaniens DeVries, 2005 † - (MURICIDAE) (FOSSIL)
- stephaninii, Tanzanitrigonia stephaninii (Venzo, 1942) † - (RUTITRIGONIIDAE) (FOSSIL)
- stephaniophorum, Eudolium stephaniophorum (C.F. Fontannes, 1880 †) - (TONNIDAE) (FOSSIL)
- Stephanites, Genus Stephanites Waagen , 1895 † (STEPHANITIDAE) (FOSSIL)
- STEPHANITIDAE Arthaber, 1896 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-CERATITIDA [Order]-NORITOIDEA [Superfamily]) (FOSSIL)
- Stephanoceras, Genus Stephanoceras Waagen , 1869 † (STEPHANOCERATIDAE) (FOSSIL)
- STEPHANOCERATIDAE Neumayr, 1875 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-STEPHANOCERATOIDEA [Superfamily]) (FOSSIL)
- Stephanoconus, Genus Stephanoconus O.A.L. Mörch, 1852 (CONIDAE)
- Stephanocosmia, Genus Stephanocosmia Kittl, 1899 † (LOXONEMATIDAE) (FOSSIL)
- Stephanoda, Genus Stephanoda J.A. Albers, 1860 (CHAROPIDAE)
- stephanogyra, Turbonilla stephanogyra W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- stephanophora, Batillaria stephanophora (G.P. Deshayes, 1833 ) - (BATILLARIIDAE)
- stephanophora, Zemitrella stephanophora (H.H. Suter, 1908) - (COLUMBELLIDAE)
- stephanophora, Kurtziella stephanophora J. Gardner, 1937 † - (MANGELIIDAE) (FOSSIL)
- stephanophorus, Janulus stephanophorus (G.P. Deshayes, 1835) - (GASTRODONTIDAE)
- Stephanopus, syn of: Genus Solemya J.B.P.A. Lamarck, 1818 (SOLEMYIDAE)
- stephanos, Boreotrophon stephanos Is. Taki, 1938 - syn of: Boreotrophon candelabrum (L.A. Reeve, 1848) - (MURICIDAE)
- Stephanosalpinx, Genus Stephanosalpinx Petuch, 1988 † (MURICIDAE) (FOSSIL)
- Stephanosphinctes, Genus Stephanosphinctes Sandoval & Westermann, 1986 † (PERISPHINCTIDAE) (FOSSIL)
- stephanota, Melanopsis stephanota J.R. Bourguignat, 1884 - (MELANOPSIDAE)
- Stephanoteuthis, Subgenus Heteroteuthis (Stephanoteuthis) Berry, 1909 (SEPIOLIDAE)
- Stephanozyga, Genus Stephanozyga Knight, 1930 † (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- stephansoniana, Sphaerospira stephansoniana (J.W. Brazier, 1879) - (CAMAENIDAE)
- stephanti, Vasum stephanti W.K. Emerson & W.E. Sage, 1988 - (TURBINELLIDAE)
- stephanuchum, Vexillum stephanuchum (J.C. Melvill, 1897) - (COSTELLARIIDAE)
- stephanuchum astephanum, Vexillum stephanuchum astephanum J.C. Melvill, 1904 - syn of: Vexillum echinatum astephanum (J.C. Melvill, 1904) - (COSTELLARIIDAE)
- stephanus, Paludomus stephanus (W.H. Benson, 1836) - (PALUDOMIDAE)
- stephenensis, Microdrillia stephenensis C.F. Laseron, 1954 - syn of: Microdrillia stephensensis C.F. Laseron, 1954 - (BORSONIIDAE)
- stephenensis, Guraleus fascinus stephenensis C. Hedley, 1922 - (MANGELIIDAE)
- stephenensis, Rhytida stephenensis A.W.B. Powell, 1930 - (RHYTIDIDAE)
- stepheni, Columbella stepheni J.C. Melvill & R. Standen, 1897 - syn of: Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (COLUMBELLIDAE)
- stepheni, Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (MITROMORPHIDAE)
- stepheni, Mitrolumna stepheni J.C. Melvill & R. Standen, 1897 - syn of: Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (MITROMORPHIDAE)
- stepheni, Lovellona stepheni J.C. Melvill & R. Standen, 1897 - syn of: Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (MITROMORPHIDAE)
- stepheni, Mitromorpha stepheni J.C. Melvill & R. Standen, 1897 - syn of: Anarithma stepheni (J.C. Melvill & R. Standen, 1897) - (MITROMORPHIDAE)
- stepheni, Kashmirites stepheni Brayard & al., 2013 † - (PRIONITIDAE) (FOSSIL)
- stephensae, Amphithalamus stephensae P. Bartsch, 1927 - (ANABATHRIDAE)
- stephensae, Cerithiopsis stephensae P. Bartsch, 1909 - (CERITHIOPSIDAE)
- stephensae, Cylichna stephensae A.M. Strong & L.G. Hertlein, 1939 - (CYLICHNIDAE)
- stephensae, Diala stephensae (Baker, G.D. Hanna & Strong, 1930) - (DIALIDAE)
- stephensae, Hemipolygona stephensae W.G. Lyons, 1991 † - (FASCIOLARIIDAE) (FOSSIL)
- stephensae, Chicoreus stephensae E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- stephensae, Odostomia stephensae W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- stephensae, Rissoina stephensae F.C. Baker, G.D. Hanna & A.M. Strong, 1930 - (RISSOINIDAE)
- stephensae, Vitrinella stephensae (F.C. Baker, G.D. Hanna & A.M. Strong, 1938) - (TORNIDAE)
- stephensae, Psephidia stephensae L.G. Hertlein & J. Grant, 1972 - syn of: Nutricola cymata (W.H. Dall, 1913) - (VENERIDAE)
- stephensae, Gafrarium stephensae H.K. Jordan, 1936 - syn of: Gouldia californica W.H. Dall, 1917 - (VENERIDAE)
- stephensensis, Microdrillia stephensensis C.F. Laseron, 1954 - (BORSONIIDAE)
- stephensensis, Cosa stephensensis C.F. Laseron, 1953 - (PHILOBRYIDAE)
- stephensi, Patula stephensi C.M.D.E. Legrand, 1871 - syn of: Stenacapha hamiltoni (J.C. Cox, 1868) - (DISCIDAE)
- stephensi, Helix stephensi C.M.D.E. Legrand, 1871 - syn of: Stenacapha hamiltoni (J.C. Cox, 1868) - (HELICIDAE)
- stephensi, Vacekia stephensi (Buckman, 1899 †) - (HILDOCERATIDAE) (FOSSIL)
- stephensi, Atrina stephensi G.D. Hanna, 1926 † - (PINNIDAE) (FOSSIL)
- stephensi, Triphora stephensi F. Baker & V.D.P. Spicer, 1935 - (TRIPHORIDAE)
- stephensi, Livonia stephensi Johnston, 1879 † - (VOLUTIDAE) (FOSSIL)
- stephensoni, Corbula stephensoni K.L. Lamprell & J.M. Healy, 1997 - (CORBULIDAE)
- stephensoni, Idonearca stephensoni Stoyanow, 1949 † - (CUCULLAEIDAE) (FOSSIL)
- stephensoni, Latirus stephensoni Gardner, 1935 † - (FASCIOLARIIDAE) (FOSSIL)
- stephensoni, Remera stephensoni A. Harbison, 1945 † - (FASCIOLARIIDAE) (FOSSIL)
- stephensoni, Inoceramus stephensoni Walaszczyk, Cobban & Harries, 2001 † - (INOCERAMIDAE) (FOSSIL)
- stephensoni, Subcancilla stephensoni (W.C. Mansfield, 1930 †) - (MITRIDAE) (FOSSIL)
- stephensoni, Eutrephoceras stephensoni R.E. Dickerson, 1914 † - (NAUTILIDAE) (FOSSIL)
- stephensoni, Ectinochilus texanum stephensoni Garvie, 2013 † - (RIMELLIDAE) (FOSSIL)
- stephmani, Marginella stephmani S.G. Veldsman & A. Aiken, 2012 - (MARGINELLIDAE)
- stephnae, Bucania stephnae Peel, 1991 † - (BUCANIIDAE) (FOSSIL)
- Stephopoma, Genus Stephopoma O.A.L. Mörch, 1860 (VERMETIDAE)
- steppica, Dupotetia steppica (P.M. Pallary, 1926) - (HELICIDAE)
- Steptopinna, syn of: Genus Pinna C. Linnaeus, 1758 (PINNIDAE)
- steraspis, Neochetoceras steraspis (Oppel, 1863 †) - (OPPELIIDAE) (FOSSIL)
- stercopunctis, Vexillum stercopunctis H. Turner, 2008 - (COSTELLARIIDAE)
- stercoraria, Trona stercoraria (C. Linnaeus, 1758) - (CYPRAEIDAE)
- stercoraria minima, Trona stercoraria minima (C. Linnaeus, 1758) - (CYPRAEIDAE)
- stercoraria rattus, Trona stercoraria rattus (J.B.P.A. Lamarck, 1810) - (CYPRAEIDAE)
- stercorarius, Acanthochitona stercorarius A. de Rochebrune, 1884 - (ACANTHOCHITONIDAE)
- stercororia, Cypraea stercororia C. Linnaeus, 1758 - syn of: Trona stercoraria (C. Linnaeus, 1758) - (CYPRAEIDAE)
- stercumuscarum, Cerithium stercumuscarum A. Valenciennes, 1833 - (CERITHIIDAE)
- stercusculicum, Conus stercusculicum F.C. Meuschen, L.W. Dillwyn, 1817 - syn of: Puncticulis arenatus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- stercusmuscarum, Thericium stercusmuscarum A. Valenciennes, 1833 † - (CERITHIIDAE) (FOSSIL)
- stercusmuscarum, Cerithium stercusmuscarum O.A.L. Mörch, 1876 - syn of: Cerithium muscarum T. Say, 1832 - (CERITHIIDAE)
- stercusmuscarum, Textilia stercusmuscarum (C. Linnaeus, 1758) - (CONIDAE)
- stercusmuscarum, Cucullus stercusmuscarum P.F. Röding, 1798 - syn of: Puncticulis arenatus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- stercusmuscarum, Notadusta punctata stercusmuscarum (J.B.P.A. Lamarck, 1811) - (CYPRAEIDAE)
- stercusmuscarum, Naticarius stercusmuscarum (J.F. Gmelin, 1791) - (NATICIDAE)
- stercusmuscarum, Nerita stercusmuscarum J.F. Gmelin, 1791 - syn of: Naticarius stercusmuscarum (J.F. Gmelin, 1791) - (NERITIDAE)
- stercusmuscarum minor, Cerithium stercusmuscarum minor O.A.L. Mörch, 1876 - syn of: Cerithium muscarum T. Say, 1832 - (CERITHIIDAE)
- stercusmuscarum minor, Rhinoclavis stercusmuscarum minor O.A.L. Mörch, 1876 - syn of: Cerithium muscarum T. Say, 1832 - (CERITHIIDAE)
- stercuspulicum, Conus stercuspulicum F.C. Meuschen, L.W. Dillwyn, 1817 - syn of: Puncticulis pulicarius (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- stercutius, Conus stercutius G.D. Nardo, 1847 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- sterea, Amnicola sterea A. Letourneux & J.R. Bourguignat, 1887 - syn of: Pseudamnicola dupotetiana (E. Forbes, 1838) - (AMNICOLIDAE)
- Stereochiton, syn of: Genus Callochiton J.E. Gray, 1847 (CALLOCHITONIDAE)
- stereoglypta, Pseudoliva stereoglypta G.B. III Sowerby, 1882 - syn of: Macron wrightii H. Adams, 1865 - (PSEUDOLIVIDAE)
- stereoglypta, Macron stereoglypta G.B. III Sowerby, 1882 - syn of: Macron wrightii H. Adams, 1865 - (PSEUDOLIVIDAE)
- Stereokion, Subgenus Undularia (Stereokion) Gruber, 1933 † (PROTORCULIDAE) (FOSSIL)
- stereoma, Stereophaedusa stereoma (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- Stereomactra, Genus Stereomactra Stewart, 1930 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- Stereophaedusa, Subgenus Phaedusa (Stereophaedusa) O. Böttger, 1877 (CLAUSILIIDAE)
- Stereoplasmoceras, Genus Stereoplasmoceras Grabau, 1922 † (STEREOPLASMOCERATIDAE) (FOSSIL)
- STEREOPLASMOCERATIDAE Kobayashi, 1934 † - Family (CEPHALOPODA-ORTHOCERATOIDEA [Subclass]-ORTHOCERIDA [Order]) (FOSSIL)
- Stereoplasmocerina, Genus Stereoplasmocerina Kobayashi , 1936 † (STEREOPLASMOCERATIDAE) (FOSSIL)
- Stereoplax, syn of: Genus Ischnoplax W.H. Dall, 1879 (CALLISTOPLACIDAE)
- Stereospyroceras, Genus Stereospyroceras Flower, 1955 † (PROTEOCERATIDAE) (FOSSIL)
- Stereostele, Genus Stereostele H.A. Pilsbry, 1919 (STREPTAXIDAE)
- Stereostoma, syn of: Subgenus Phaedusa (Stereophaedusa) O. Böttger, 1877 (CLAUSILIIDAE)
- Stereotoceras, Genus Stereotoceras Flower, 1950 † (BREVICOCERATIDAE) (FOSSIL)
- Stereozaptyx, Genus Stereozaptyx H.A. Pilsbry, 1905 (CLAUSILIIDAE)
- steriae, Olivancillaria steriae L.A. Reeve, 1850 - syn of: Agaronia steeriae (L.A. Reeve, 1850) - (OLIVIDAE)
- sterigma, Terebra sterigma L.R.L. Simone, 1999 - (TEREBRIDAE)
- sterigmoides, Terebra sterigmoides L.R.L. Simone & C. Gracia, 2006 - (TEREBRIDAE)
- sterilis, Pyrgulopsis sterilis R. Hershler, 1998 - (HYDROBIIDAE)
- Sterkia, Genus Sterkia H.A. Pilsbry, 1898 (VERTIGINIDAE)
- sterkiana, Cavellia sterkiana (H.H. Suter, 1891) - (CHAROPIDAE)
- sterkiana, Fectola sterkiana H.H. Suter, 1891 - syn of: Cavellia sterkiana (H.H. Suter, 1891) - (CHAROPIDAE)
- sterkiana, Gastrocopta sterkiana H.A. Pilsbry, 1917 - (GASTROCOPTIDAE)
- sterkiana, Striopupilla sterkiana (H.A. Pilsbry, 1890) - (PUPILLIDAE)
- sterkianum, Bythiospeum sterkianum (S. Clessin, 1882) - (HYDROBIIDAE)
- sterkianum, Pisidium sterkianum H.A. Pilsbry, 1897 - (SPHAERIIDAE)
- sterkianum lauterborni, Bythiospeum sterkianum lauterborni (F. Haas, 1936) - (HYDROBIIDAE)
- sterkii, Heliacus sterkii (H.A. Pilsbry & E.G. Vanatta, 1908) - (ARCHITECTONICIDAE)
- sterkii, Guppya sterkii W.H. Dall, 1888 - (EUCONULIDAE)
- sterkii, Vertigo sterkii H.A. Pilsbry, 1919 - (VERTIGINIDAE)
- sterlingensis, Cyrtodontula sterlingensis (F.B. Meek & A.H. Worthen, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- sterlingensis, Whitella sterlingensis F.B. Meek & A.H. Worthen, 1890 † - syn of: Cyrtodontula sterlingensis (F.B. Meek & A.H. Worthen, 1890 †) - (CYRTODONTIDAE) (FOSSIL)
- sterlingensis, Tentaculites sterlingensis F.B. Meek & A.H. Worthen, 1865 † - (TENTACULITIDAE) (FOSSIL)
- Sterna, syn of: Genus Elona H. Adams & A. Adams, 1855 (ELONIDAE)
- sterna, Pteria sterna (A.A. Gould, 1851) - (PTERIIDAE)
- sternale, Paroniceras sternale (A.V.M.D. D'Orbigny, 1845 †) - (HILDOCERATIDAE) (FOSSIL)
- sternalis, Ammonites sternalis d'Orbigny, 1845 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- sternbergensis, Ceratia sternbergensis R. Janssen, 1978 † - (IRAVADIIDAE) (FOSSIL)
- sternbergensis, Musculus sternbergensis Anderson, 1967 † - (MYTILIDAE) (FOSSIL)
- sternbergensis, Cingula sternbergensis R. Janssen, 1978 † - (RISSOIDAE) (FOSSIL)
- sternbergi, Nautilus sternbergi Barrande, 1865 - (NAUTILIDAE)
- sternerea, Hinemoa sternerea C.F. Laseron, 1959 - (PYRAMIDELLIDAE)
- sterni, Upsilodon sterni A. Metcalf & D.H. Riskind, 1978 - (POLYGYRIDAE)
- sternsiana, Micrarionta sternsiana (K.T. Menke, 1829) - (HELMINTHOGLYPTIDAE)
- steroma, Stereophaedusa steroma (H.A. Pilsbry, 1901) - syn of: Stereophaedusa stereoma (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- Steromphala, syn of: Genus Gibbula Risso, 1826 † (TROCHIDAE) (FOSSIL)
- Steromphalus, syn of: Genus Gibbula Risso, 1826 † (TROCHIDAE) (FOSSIL)
- Sterope, syn of: Subgenus Partula (Melanesica) H.A. Pilsbry, 1909 (PARTULIDAE)
- Sterophaedusa, syn of: Subgenus Phaedusa (Stereophaedusa) O. Böttger, 1877 (CLAUSILIIDAE)
- sterpa, Neodonaldina sterpa Grundel, 2006 † - (TOFANELLIDAE) (FOSSIL)
- sterreri, Falcidens sterreri (L. Salvini-Plawén, 1967) - (CHAETODERMATIDAE)
- sterrha, Inquisitor sterrha (R.B. Watson, 1881) - (PSEUDOMELATOMIDAE)
- sterrha, Thelyssina sterrha B.A. Marshall, 1983 - (SEGUENZIIDAE)
- sterri, Pupilla sterri (I. von Voith in F. Forster, 1840) - (PUPILLIDAE)
- sterrmannia, Nodinella sterrmannia Heidelberger, 2001 † - (ANOMPHALIDAE) (FOSSIL)
- stertum, Limaria stertum (T. Iredale, 1939) - (LIMIDAE)
- Stethenodonta, syn of: Genus Sthenodonta Pojeta & Gilbert-Tomlinson, 1977 † (NUCULARCIDAE) (FOSSIL)
- stetopus, Chicoreus stetopus (A. De Gregorio, 1890 †) - (MURICIDAE) (FOSSIL)
- stettinensis, Hilberia stettinensis (von Koenen 1868) † - (PECTINIDAE) (FOSSIL)
- steursiana, Papuina steursiana (L. Pfeiffer, 1853) - (CAMAENIDAE)
- steursiana concolor, Papuina steursiana concolor (E.A. Smith, 1897) - (CAMAENIDAE)
- steursii, Xesta steursii R.J. Shuttleworth, 1852 - (ARIOPHANTIDAE)
- steursii limbifera, Xesta steursii limbifera E.C. Von Martens, 1872 - (ARIOPHANTIDAE)
- stevanovici, Irinoceras stevanovici Kullmann, 1962 † - (PRIONOCERATIDAE) (FOSSIL)
- stevanovici, Prolecanites stevanovici W. Korn & Sudar, 2016 † - (PROLECANITIDAE) (FOSSIL)
- stevanovici, Kosovia stevanovici Atanackovic, 1959 † - (VIVIPARIDAE) (FOSSIL)
- stevanovici, Viviparus stevanovici T.A. Neubauer, M. Harzhauser, A. Kroh, E. Georgopoulou & O. Mandic, - (VIVIPARIDAE) (FOSSIL)
- stevanovitchi, Omphalotropis stevanovitchi R.J. Griffiths, 2000 - (ASSIMINEIDAE)
- stevansana, Aclisina stevansana F.B. Meek & A.H. Worthen, 1866 † - syn of: Donaldina stevensana (F.B. Meek & A.H. Worthen, 1866 †) - (MURCHISONIIDAE) (FOSSIL)
- Steve, Genus Steve M.J. Faber, 2004 (BUCCINIDAE)
- stevehubrechti, Amphidromus stevehubrechti N.N. Thach & J. Abbas, 2017 - (CAMAENIDAE)
- steveirwini, Crikey steveirwini J. Stanisic, 2009 - (CAMAENIDAE)
- stevenabbasorum, Cyclophorus stevenabbasorum Thach, 2016 - (CYCLOPHORIDAE)
- steveni, Buccinum steveni I. Krynicki, 1837 - syn of: Bela nebula (G. Montagu, 1803) - (BUCCINIDAE)
- steveni, Eucymatoceras steveni (Karakasch, 1907 †) - (CYMATOCERATIDAE) (FOSSIL)
- steveni, Olivella steveni J.Q. Burch & G.B. Campbell, 1963 - (OLIVELLIDAE)
- steveni, Stauroglypta steveni (H.A. Pilsbry, 1950) - (SAGDIDAE)
- steveni campbelli, Olivella steveni campbelli J.Q. Burch & G.B. Campbell, 1963 - (OLIVELLIDAE)
- stevenianus, Unio stevenianus I. Krynicki, 1837 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- stevenliei, Amphidromus stevenliei Parsons, 2016 - (CAMAENIDAE)
- stevensana, Donaldina stevensana (F.B. Meek & A.H. Worthen, 1866 †) - (DONALDINIDAE) (FOSSIL)
- stevensana, Aclisina stevensana F.B. Meek & A.H. Worthen, 1866 † - syn of: Donaldina stevensana (F.B. Meek & A.H. Worthen, 1866 †) - (MURCHISONIIDAE) (FOSSIL)
- stevensanus, Bellerophon stevensanus McChesney, 1859 † - syn of: Bellerophon stevensianus McChesney, 1859 † - (BELLEROPHONTIDAE) (FOSSIL)
- stevensi, Castalia stevensi (F.C. Baker, 1930) - (HYRIIDAE)
- stevensi, Leurotrochoceras stevensi Miller & Collinson, 1952 † - (LECHRITROCHOCERATIDAE) (FOSSIL)
- stevensi, Courtilloticeras stevensi Guex & al., 2005 † - (THETIDITIDAE) (FOSSIL)
- stevensiana, Fadyenia stevensiana E. Chitty, 1857 - (HELICINIDAE)
- stevensiana, Polidevcia stevensiana (Girty, 1910 †) - (NUCULANIDAE) (FOSSIL)
- stevensianus, Bellerophon stevensianus McChesney, 1859 † - (BELLEROPHONTIDAE) (FOSSIL)
- stevensmithi, Austropyrgus stevensmithi A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- stevensoni, Aclis stevensoni White, 1881 † - syn of: Donaldina robusta (Stevens, 1858 †) - (ACLIDIDAE) (FOSSIL)
- stevensoni, Cerion stevensoni (W.H. Dall, 1900) - (CERIONIDAE)
- stevensoni, Costoanachis stevensoni E.S. Marks, 1951 † - (COLUMBELLIDAE) (FOSSIL)
- stevensoni, Foxidonta stevensoni W.J. Clench, 1950 - (ENDODONTIDAE)
- stevensoni, Liospira stevensoni Parks, 1915 † - (EOTOMARIIDAE) (FOSSIL)
- stevensoni, Scintilla stevensoni A.W.B. Powell, 1932 - (GALEOMMATIDAE)
- stevensoni, Didymoceras stevensoni (R.P. Whitfield, 1877 †) - (NOSTOCERATIDAE) (FOSSIL)
- stevrecensis, Eleniceras stevrecensis Breskovski, 1967 † - (NEOCOMITIDAE) (FOSSIL)
- stewardi, Nuculana stewardi A.A. Olsson, 1931 † - (NUCULANIDAE) (FOSSIL)
- stewardsoni, Cingula stewardsoni (E.G. Vanatta, 1909) - (RISSOIDAE)
- stewardsonii, Epioblasma stewardsonii I. Lea, 1852 - (UNIONIDAE)
- stewardsonii stewensoni, Unio stewardsonii stewensoni A. De Gregorio, 1914 - syn of: Epioblasma obliquata (C.S. Rafinesque, 1820) - (UNIONIDAE)
- stewartae, Haliotis virginea stewartae M. Jones & B. Owen, 2004 - (HALIOTIDAE)
- stewartensis, Flammoconcha stewartensis R.K. Dell, 1952 - (CHAROPIDAE)
- stewartensis, Phacussa stewartensis (P. David, 1934) - (CHAROPIDAE)
- stewartensis, Allodiscus stewartensis P. David, 1934 - syn of: Phacussa stewartensis (P. David, 1934) - (CHAROPIDAE)
- stewartensis, Phrixgnathus flemingi stewartensis R.K. Dell, 1954 - (PUNCTIDAE)
- stewarti, Venericardia stewarti † - (CARDITIDAE) (FOSSIL)
- stewarti, Venericor stewarti (Gardner & E. Bowles, 1939 †) - (CARDITIDAE) (FOSSIL)
- stewarti, Abderospira stewarti K.V.W. Palmer, 1937 † - (CYLICHNIDAE) (FOSSIL)
- stewarti, Ortonella stewarti Foerste, 1924 † - (CYRTODONTIDAE) (FOSSIL)
- stewarti, Crenostrea stewarti (G.D. Hanna, 1927 †) - (GRYPHAEIDAE) (FOSSIL)
- stewarti, Rugotyphis stewarti E.H. Vokes, 1983 † - (MURICIDAE) (FOSSIL)
- stewarti, Ostrea stewarti G.D. Hanna, 1927 † - syn of: Crenostrea stewarti (G.D. Hanna, 1927 †) - (OSTREIDAE) (FOSSIL)
- stewarti, Pholadomya stewarti Tate † - (PHOLADOMYIDAE) (FOSSIL)
- stewarti, Chedevillia stewarti Clark, 1942 † - (ROSTELLARIIDAE) (FOSSIL)
- stewarti, Scaphander stewarti J.W. Durham, 1944 † - (SCAPHANDRIDAE) (FOSSIL)
- stewarti, Pisidium stewarti H.B. Preston, 1909 - (SPHAERIIDAE)
- stewarti, Solyma stewarti Stephenson 1952 † - (TELLINIDAE) (FOSSIL)
- stewarti, Turritella uvasana stewarti Merriam, 1941 † - (TURRITELLIDAE) (FOSSIL)
- stewarti, Compsomyax stewarti Clark & J.W. Durham, 1946 † - (VENERIDAE) (FOSSIL)
- Stewartia, Genus Stewartia A.A. Olsson & A. Harbison, 1953 (LUCINIDAE)
- stewartiana, Loboplax stewartiana K.H.J. Thiele, 1909 - syn of: Notoplax mariae (W.H. Webster, 1907) - (ACANTHOCHITONIDAE)
- stewartiana, Maurea punctulata stewartiana W.R.B. Oliver, 1926 - (CALLIOSTOMATIDAE)
- stewartiana, Eatoniella stewartiana W.F. Ponder, 1965 - (EATONIELLIDAE)
- stewartiana, Tugali stewartiana A.W.B. Powell, 1939 - (FISSURELLIDAE)
- stewartiana, Dentimargo stewartiana (H.H. Suter, 1908) - (MARGINELLIDAE)
- stewartiana, Lissarca stewartiana Powell, 1935 - (PHILOBRYIDAE)
- stewartiana, Kerguelenella stewartiana (A.W.B. Powell, 1939) - (SIPHONARIIDAE)
- stewartiana, Pugillaria stewartiana B. Hubendick, 1946 - syn of: Pugillaria flemingi A.W.B. Powell, 1955 - (SIPHONARIIDAE)
- stewartiana, Anodonta stewartiana I. Lea, 1834 - syn of: Anodonta grandis T. Say, 1829 - (UNIONIDAE)
- stewartianus, Cryptoconchus stewartianus A. de Rochebrune, 1882 - (ACANTHOCHITONIDAE)
- stewartianus, Pecten stewartianus Lundgren, 1895 - (PECTINIDAE)
- stewartii, Achatinella stewartii (J. Green, 1827) - (ACHATINELLIDAE)
- stewartii, Achatina stewartii J. Green, 1827 - syn of: Achatinella stewartii (J. Green, 1827) - (ACHATINIDAE)
- stewartii producta, Achatinella stewartii producta L.A. Reeve, 1850 - (ACHATINELLIDAE)
- stewartvillensis, Periploma stewartvillensis Clark & Woodford, 1927 † - (PERIPLOMATIDAE) (FOSSIL)
- stewartvillensis, Dosiniopsis stewartvillensis Clark & Woodford, 1927 † - (VENERIDAE) (FOSSIL)
- Steye, Genus Steye M.J. Faber, 2004 (BUCCINIDAE)
- steyermarki, Eurytus steyermarki F. Haas, 1955 - syn of: Drymaeus steyermarki (F. Haas, 1955) - (AMPHIBULIMIDAE)
- steyermarki, Drymaeus steyermarki (F. Haas, 1955) - (BULIMULIDAE)
- steykerae, Joculator steykerae A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- steyni, Mitrella steyni M. Lussi, 2009 - (COLUMBELLIDAE)
- steynlussii, Lutraria steynlussii M. Huber, 2010 - (MACTRIDAE)
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