- scelestyum, Bufonaria scelestyum M. Yokoyama, 1928 - syn of: Bufonaria rana (C. Linnaeus, 1758) - (BURSIDAE)
- Scelidionarca, syn of: Genus Noetiella K.H.J. Thiele & S.G.A. Jaeckel, 1931 (NOETIIDAE)
- Scelidoropa, Genus Scelidoropa Hyman & Stanisic, 2005 (CHAROPIDAE)
- Scelidotoma, Genus Scelidotoma B.L. Choe, S.H. Yoon & T. Habe, 1992 (FISSURELLIDAE)
- Scenella, Genus Scenella Billings, 1872 † (SCENELLIDAE) (FOSSIL)
- SCENELLIDAE S.A. Miller, 1889 † - Family (MONOPLACOPHORA-CYRTONELLIDA [Order]-SCENELLOIDEA [Superfamily]) (FOSSIL)
- Scenellopsis, Genus Scenellopsis Resser, 1938 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- scepasma, Aegista scepasma L.A. Reeve, 1854 - (BRADYBAENIDAE)
- scepta, Euthria scepta K. Fraussen & R. Hadorn, 2003 - (BUCCINIDAE)
- Sceptrites, Genus Sceptrites Flower, 1939 † (SPYROCERATIDAE) (FOSSIL)
- sceptrum, Triphora sceptrum K.H.J. Thiele, 1925 - (TRIPHORIDAE)
- Sceptrum, Genus Sceptrum Stewart, 1927 † (TURBINELLIDAE) (FOSSIL)
- sceptrumregis, Rissoina sceptrumregis J.C. Melvill & R. Standen, 1901 - (RISSOINIDAE)
- scethra, Natica scethra W.H. Dall, 1908 - (NATICIDAE)
- schabalkini, Eothinites schabalkini Tumanskaya, 1939 † - (METALEGOCERATIDAE) (FOSSIL)
- schabalkini, Riphaeites schabalkini Ruzhentsev, 1933 † - syn of: Eothinites kargalensis Ruzhentsev, 1933 † - (METALEGOCERATIDAE) (FOSSIL)
- schachmaticus, Theodoxus schachmaticus (N.I. Andrusov, 1909 †) - (NERITIDAE) (FOSSIL)
- schadei, Anodontites schadei W.B. Marshall, 1934 - syn of: Anodontites elongata schadei W.B. Marshall, 1934 - (MYCETOPODIDAE)
- schadei, Anodontites elongata schadei W.B. Marshall, 1934 - (MYCETOPODIDAE)
- schadenbergi, Calocochlia schadenbergi O.F. von Möllendorff, 1890 - (BRADYBAENIDAE)
- schaeferi, Hayamiella schaeferi J. Gründel, Keupp & H.G. Lang, 2015 † - (NERITOPSIDAE) (FOSSIL)
- schaeferi, Rhabdoconcha schaeferi E.A.L. Kittl, 1894 † - (PSEUDOMELANIIDAE) (FOSSIL)
- schaeferkalki, Lotzia schaeferkalki Heidelberger, 2001 † - (PLATYCERATIDAE) (FOSSIL)
- schaefferiana, Emarginaria schaefferiana (O. Böttger, 1877 †) - (CLAUSILIIDAE) (FOSSIL)
- schaefflii, Helix schaefflii O. Böttger, 1885 - syn of: Helix pomatia C. Linnaeus, 1758 - (HELICIDAE)
- schaelkense, Cravenoceras schaelkense (Bruning, 1923 †) - (CRAVENOCERATIDAE) (FOSSIL)
- schaerfiae, Ampelita schaerfiae L. Pfeiffer, 1861 - syn of: Natalina schaerfiae (L. Pfeiffer, 1861) - (ACAVIDAE)
- schaerfiae, Natalina schaerfiae (L. Pfeiffer, 1861) - (RHYTIDIDAE)
- schafarziki, Erycites schafarziki Prinz, 1904 † - syn of: Erycites intermedius M. von P. Hantken in Prinz, 1904 † - (HAMMATOCERATIDAE) (FOSSIL)
- schafarziki, Provalenciennesia schafarziki (Gorjanovic-Kramberger, 1901 †) - (LYMNAEIDAE) (FOSSIL)
- Schafbergia, Subgenus Proacirsa (Schafbergia) Gatto & Monari, 2010 † (GORDENELLIDAE) (FOSSIL)
- schafferi, Montacuta schafferi F. Kautsky, 1940 † - (MONTACUTIDAE) (FOSSIL)
- schafferyi, Papuina schafferyi T. Iredale, 1940 - (CAMAENIDAE)
- Schaffhauseria, Genus Schaffhauseria Vermeulen & al., 2012 † (HAMULINIDAE) (FOSSIL)
- schafhaeutli, Triasoperna schafhaeutli (Stur, 1851 †) - (MYTILIDAE) (FOSSIL)
- schafhaeutli, Filamussium schafhaeutli (H. Winkler, 1859 †) - (PROPEAMUSSIIDAE) (FOSSIL)
- Schafhaeutlia, Genus Schafhaeutlia Cossmann, 1897 † (LUCINIDAE) (FOSSIL)
- schafhautli, Anomia schafhautli H. Winkler, 1859 † - (ANOMIIDAE) (FOSSIL)
- schahimardanica, Valvatamnicola schahimardanica (Z.I. Izzatullaev, 1984) - (HYDROBIIDAE)
- schaireri, Triptychia solida schaireri Schnabel, 2006 † - (FILHOLIIDAE) (FOSSIL)
- schaireri, Zonitoides schaireri Schlickum, 1978 † - (GASTRODONTIDAE) (FOSSIL)
- schakuranica, Paladilhiopsis schakuranica Y.I. Starobogatov, 1962 - (MOITESSIERIIDAE)
- schaliei, Chondropoma schaliei H.B. Baker, 1950 - (POMATIIDAE)
- schalteggeri, Arctoceras schalteggeri Brühwiler & Bucher, 2011 † - (ARCTOCERATIDAE) (FOSSIL)
- schamarae, Promyalina schamarae (Bittner, 1899 †) - (MYALINIDAE) (FOSSIL)
- schamarense, Pseudosageceras schamarense Kiparisova, 1961 † - syn of: Pseudosageceras multilobatum Noetling, 1905 † - (HEDENSTROEMIIDAE) (FOSSIL)
- schamarensis, Shamaraites schamarensis (Zakharov, 1968 †) - (FLEMINGITIDAE) (FOSSIL)
- schamaricus, Gyraulus schamaricus Z.I. Izzatullaev, 1972 - (PLANORBIDAE)
- schamhalensis, Vallonia mionecton schamhalensis O.W. Von Rosen, 1892 - (VALLONIIDAE)
- schamyli, Fruticocampylaea schamyli W.A. Lindholm, 1922 - syn of: Fruticocampylaea narzanensis (I. Krynicki, 1833) - (HYGROMIIDAE)
- schanderi, Anatoma schanderi T. Høisæter & D.L. Geiger, 2011 - (ANATOMIDAE)
- schanderi, Scutopus schanderi H. Saito & Salvini-Plawen, 2014 - (LIMIFOSSORIDAE)
- schanderi, Macellomenia schanderi K.M. Kocot & C. Todt, 2014 - (MACELLOMENIIDAE)
- schanderi, Longchaeus schanderi J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998 - syn of: Pyramidella inopinata (C.F.C. Schander, 1994) - (PYRAMIDELLIDAE)
- schantarica, Velutina schantarica K.M. Derjugin, 1950 - syn of: Velutina cryptospira A.T. von Middendorff, 1849 - (VELUTINIDAE)
- schantaricum, Buccinum schantaricum A.T. von Middendorff, 1849 - syn of: Aulacofusus brevicauda (G.P. Deshayes, 1832) - (BUCCINIDAE)
- schantaricum, Obesotoma schantaricum A.T. von Middendorff, 1849 - syn of: Obesotoma solida (W.H. Dall, 1887) - (MANGELIIDAE)
- schantaricum choshiensis, Buccinum schantaricum choshiensis T. Shikama, 1962 - syn of: Beringius turtoni (W.I. Bean, 1834) - (BUCCINIDAE)
- schantaricus, Aulacofusus schantaricus A.T. von Middendorff, 1849 - syn of: Aulacofusus brevicauda (G.P. Deshayes, 1832) - (BUCCINIDAE)
- schantaricus, Margarites schantaricus (A.T. von Middendorff, 1849) - (MARGARITIDAE)
- schantaricus, Trochus schantaricus A.T. von Middendorff, 1849 - syn of: Margarites schantaricus (A.T. von Middendorff, 1849) - (TROCHIDAE)
- schantaricus kamchaticus, Margarites schantaricus kamchaticus (W.H. Dall, 1919) - (MARGARITIDAE)
- schantaricus kurilensis, Aulacofusus schantaricus kurilensis A.N. Golikov & V.V. Gulbin, 1977 - syn of: Aulacofusus brevicauda (G.P. Deshayes, 1832) - (BUCCINIDAE)
- schaposchnikovi, Anoplitella schaposchnikovi (O.W. Von Rosen, 1911) - (HYGROMIIDAE)
- schaposchnikovi balkariensis, Caucasigena schaposchnikovi balkariensis W.A. Lindholm, 1929 - syn of: Anoplitella schaposchnikovi (O.W. Von Rosen, 1911) - (HYGROMIIDAE)
- schardti, Hoplites schardti Baumberger, 1906 † - syn of: Neohoploceras arnoldi (Pictet & Campiche, 1860 †) - (HOPLITIDAE) (FOSSIL)
- schardti, Lima schardti de Loriol, 1883 † - (LIMIDAE) (FOSSIL)
- scharffi, Deroceras scharffi H.R. Simroth, 1910 - syn of: Deroceras panormitanum M. Lessona & C. Pollonera, 1882 - (AGRIOLIMACIDAE)
- scharfiae, Natalina scharfiae L. Pfeiffer, 1861 - syn of: Natalina schaerfiae (L. Pfeiffer, 1861) - (RHYTIDIDAE)
- Schartia, Genus Schartia Nützel & Kaim, 2014 † (TOFANELLIDAE) (FOSSIL)
- schartimiense, Planetoceras schartimiense Janischewsky, 1900 † - (KONINCKIOCERATIDAE) (FOSSIL)
- schartimiensis, Nautilus schartimiensis Janischewsky, 1900 † - syn of: Planetoceras schartimiense Janischewsky, 1900 † - (NAUTILIDAE) (FOSSIL)
- schartymense, Homoceras schartymense (Ruzhencev & Bogoslovskaya, 1978 †) - (HOMOCERATIDAE) (FOSSIL)
- schartymensis, Ramosites schartymensis (Librovitch, 1939 †) - (RAMOSITIDAE) (FOSSIL)
- Schartymites, Genus Schartymites Librovitch , 1939 † (STENOGLAPHYRITIDAE) (FOSSIL)
- Schasicheila, Genus Schasicheila R.J. Shuttleworth, 1852 (HELICINIDAE)
- schatzmayri, Macedonica schatzmayri (A.J. Wagner, 1914) - (CLAUSILIIDAE)
- schatzmayri pangaionica, Macedonica schatzmayri pangaionica R.A.M. Brandt, 1961 - syn of: Macedonica pangaionica (R.A.M. Brandt, 1961) - (CLAUSILIIDAE)
- schaubi, Pronorites schaubi Arthaber, 1908 † - syn of: Albanites triadicus (Arthaber, 1908 †) - (PRONORITIDAE) (FOSSIL)
- schaufussi, Zospeum schaufussi (G.R. von Frauenfeld, 1862) - (ELLOBIIDAE)
- schaufussi, Pyrenaearia schaufussi (W. Kobelt, 1876) - (HYGROMIIDAE)
- schauinslandi, Partulina proxima schauinslandi F. Borcherding, 1906 - (ACHATINELLIDAE)
- schauinslandi, Pseudaneitea schauinslandi (H.P. Plate, 1897) - (ATHORACOPHORIDAE)
- schauinslandi, Plaxiphora caelata schauinslandi (K.H.J. Thiele, 1909) - (MOPALIIDAE)
- schaumburgi, Phlycticeras schaumburgi L. Waagen, 1873 † - (OPPELIIDAE) (FOSSIL)
- schawalleri, Formosana schawalleri H. Nordsieck, 2001 - (CLAUSILIIDAE)
- schech, Conus schech H.C. Weinkauff, 1873 - syn of: Leptoconus locumtenens (J.F. Blumenbach, 1791) - (CONIDAE)
- Schedocardia, Genus Schedocardia Stewart, 1930 † (CARDIIDAE) (FOSSIL)
- Schedotrapezium, Genus Schedotrapezium Stewart, 1930 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- scheelei, Clio scheelei (H.W. Munthe, 1888) - (CLIIDAE)
- scheepmakeri, Planispira scheepmakeri (L. Pfeiffer, 1851) - (CAMAENIDAE)
- scheepmakeri, Fasciolaria scheepmakeri W. Kobelt, 1875 - syn of: Fasciolaria tulipa (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- scheepmakeri, Pinctada scheepmakeri R.W. Dunker, 1872 - syn of: Pinctada albina (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- scheepmakeri, Azorinus scheepmakeri (R.W. Dunker, 1852) - (SOLECURTIDAE)
- scheepmakeri, Solecurtus scheepmakeri R.W. Dunker, 1852 - syn of: Azorinus scheepmakeri (R.W. Dunker, 1852) - (SOLECURTIDAE)
- scheepmakeri, Thracia scheepmakeri R.W. Dunker, 1852 - syn of: Thracia convexa (Wood, 1815) - (THRACIIDAE)
- scheeri, Frydatinus scheeri (K. Bandel & Fryda, 1998 †) - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- scheerpeltzi, Trochulus oreinos scheerpeltzi E. Mikula, 1957 - (HYGROMIIDAE)
- schefferi, Transovula schefferi A. De Gregorio, 1880 † - (OVULIDAE) (FOSSIL)
- schefferi, Liocyma schefferi P. Bartsch & H.A. Rehder, 1939 - syn of: Liocyma fluctuosa (A.A. Gould, 1841) - (VENERIDAE)
- scheibei, Codazziceras scheibei (F. Riedel, 1938 †) - (ACANTHOCERATIDAE) (FOSSIL)
- scheibei, Pyruclia scheibei (F.M. Anderson, 1929 †) - (CANCELLARIIDAE) (FOSSIL)
- scheibei, Chama scheibei Anderson, 1929 † - (CHAMIDAE) (FOSSIL)
- scheibei, Corbula scheibei Anderson, 1928 † - syn of: Pachydon hettneri Anderson, 1928 † - (CORBULIDAE) (FOSSIL)
- scheibei, Exogyra scheibei Bohm, 1926 † - (GRYPHAEIDAE) (FOSSIL)
- scheibeneri, Ctenodesma scheibeneri F. Haas, 1927 - (UNIONIDAE)
- scheii, Bellerophon scheii Tolmachoff, 1930 † - (BELLEROPHONTIDAE) (FOSSIL)
- scheii, Ellesmeroceras scheii Foerste, 1921 † - (ELLESMEROCERATIDAE) (FOSSIL)
- scheii, Palaeopharus scheii E.A.L. Kittl, 1907 † - (PALAEOPHARIDAE) (FOSSIL)
- scheldense, Clauseniceras scheldense (Matern, 1931 †) - (GEPHUROCERATIDAE) (FOSSIL)
- schelechovi, Lymnaea schelechovi N.D. Kruglov & Y.I. Starobogatov, 1989 - (LYMNAEIDAE)
- schelkovnikovi, Imparietula schelkovnikovi (O.W. Von Rosen, 1914) - (ENIDAE)
- schelkovnikovi, Helix schelkovnikovi O.W. Von Rosen, 1914 - syn of: Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HELICIDAE)
- schelkovnikovi, Kalitinaia schelkovnikovi (V.V. Bogachev, 1936) - (HYGROMIIDAE)
- schelkovnikovi, Limax schelkovnikovi H.R. Simroth, 1912 - syn of: Vitrinoides monticola armeniacus (H.R. Simroth, 1886) - (LIMACIDAE)
- schellbachi, Tainoceras schellbachi Miller & Unklesbay, 1942 † - (TAINOCERATIDAE) (FOSSIL)
- schellwieni, Manticoceras schellwieni (Wedekind, 1913 †) - (GEPHUROCERATIDAE) (FOSSIL)
- schellwieni, Tropites schellwieni Smith, 1927 † - (TROPITIDAE) (FOSSIL)
- schellwieni punctatum, Manticoceras schellwieni punctatum Petter, 1959 † - syn of: Manticoceras schellwieni (Wedekind, 1913 †) - (GEPHUROCERATIDAE) (FOSSIL)
- scheltemae, Chaetoderma scheltemae (D. Ivanov, 1984) - (CHAETODERMATIDAE)
- scheltemai, Bathyspinula scheltemai (J.A. Allen & A. Sanders, 1982) - (BATHYSPINULIDAE)
- scheltemai, Spinula scheltemai J.A. Allen & A. Sanders, 1982 - syn of: Bathyspinula scheltemai (J.A. Allen & A. Sanders, 1982) - (BATHYSPINULIDAE)
- Scheltemaia, Genus Scheltemaia L. Salvini-Plawén, 2003 (PRUVOTINIDAE)
- schemachensis, Agriolimax schemachensis H.R. Simroth, 1912 - syn of: Agriolimax bakurianus H.R. Simroth, 1912 - (AGRIOLIMACIDAE)
- Schematochiton, Genus Schematochiton Hoare , 2002 † (LEPTOCHITONIDAE) (FOSSIL)
- schembri, Platydoris schembri J.B. Vérany, 1846 - syn of: Platydoris argo (C. Linnaeus, 1767) - (DISCODORIDIDAE)
- schembrii, Doris schembrii J.B. Vérany, 1846 - syn of: Doris pseudoargus J.L. Rapp, 1827 - (DORIDIDAE)
- schembrii, Trochoidea schembrii L. Pfeiffer, 1848 - (HYGROMIIDAE)
- schembriorum, Styliola schembriorum Janssen, 2012 † - (CRESEIDAE) (FOSSIL)
- schencki, Trachycardium schencki L.W. Wiedey, 1928 † - (CARDIIDAE) (FOSSIL)
- schencki, Conus schencki Weaver & Kleinpell, 1963 † - (CONIDAE) (FOSSIL)
- schencki, Dentalium schencki Moore, 1963 † - (DENTALIIDAE) (FOSSIL)
- schencki, Pterolucina schencki (Zuschin & al. 2002) † - (LUCINIDAE) (FOSSIL)
- schencki, Laevityphis schencki A.M. Keen & G.B. Campbell, 1964 † - (MURICIDAE) (FOSSIL)
- schencki, Crenomytilus schencki (G.D. Hanna & L.G. Hertlein, 1938 †) - (MYTILIDAE) (FOSSIL)
- schencki, Nucula schencki L.G. Hertlein & Strong, 1940 - (NUCULIDAE)
- schencki, Austronucula schencki Powell, 1939 - (NUCULIDAE)
- schencki, Truncacila schencki Stoyanow, 1949 † - (NUCULIDAE) (FOSSIL)
- schencki, Rhabdus schencki Moore, 1964 † - (RHABDIDAE) (FOSSIL)
- schencki, Thracia schencki Teglund, 1933 † - (THRACIIDAE) (FOSSIL)
- schencki, Thracia schencki Clark, 1932 - syn of: Thracia condoni W.H. Dall, 1909 - (THRACIIDAE)
- schencki, Thracia schencki Tegland † - syn of: Thracia kamtschatica L. Krishtofovich, 1947 † - (THRACIIDAE) (FOSSIL)
- schencki, Protothaca schencki S. Nomura, 1937 - syn of: Venerupis decussata (C. Linnaeus, 1758) - (VENERIDAE)
- schenki, Glycymeris secticosta schenki D. Nicol † - (GLYCYMERIDIDAE) (FOSSIL)
- schepmani, Oocorys schepmani H. Turner, 1948 - syn of: Oocorys sulcata P. Fischer, 1884 - (CASSIDAE)
- schepmani, Oospira schepmani (O.F. von Möllendorff, 1897) - (CLAUSILIIDAE)
- schepmani, Clavosurcula schepmani A.V. Sysoev, 1997 - (COCHLESPIRIDAE)
- schepmani, Mitrella schepmani D. Monsecour & D. Monsecour, 2007 - (COLUMBELLIDAE)
- schepmani, Conus schepmani H.C. Fulton, 1936 - syn of: Fusiconus comatosa (H.A. Pilsbry, 1904) - (CONIDAE)
- schepmani, Glossostylus schepmani F.F. Laidlaw, 1957 - (CYCLOPHORIDAE)
- schepmani, Geloina schepmani M. Huber, 2015 - (CYRENIDAE)
- schepmani, Gibberula schepmani J.R. le B. Tomlin, 1916 - syn of: Gibberula abyssicola É.A.A. Locard, 1897 - (CYSTISCIDAE)
- schepmani, Epitonium schepmani (J.C. Melvill, 1910) - (EPITONIIDAE)
- schepmani, Peristernia schepmani A.M. Dekkers, 2014 - (FASCIOLARIIDAE)
- schepmani, Akibumia flexibilis schepmani (L.S.R. Bergh, 1893) - (LAUBIERINIDAE)
- schepmani, Bathyliotina schepmani (T. Habe, 1953) - (LIOTIIDAE)
- schepmani, Mitra schepmani R. Salisbury & E.G. Guillot de Suduiraut, 2003 - (MITRIDAE)
- schepmani, Alectrion schepmani E.J. Koperberg, 1931 † - syn of: Nassarius idyllius (J.C. Melvill & R. Standen, 1901) - (NASSARIIDAE) (FOSSIL)
- schepmani, Natica schepmani K.H.J. Thiele, 1925 - (NATICIDAE)
- schepmani, Polinices schepmani T. Iredale, 1927 - syn of: Natica arachnoidea (J.F. Gmelin, 1791) - (NATICIDAE)
- schepmani, Uber schepmani T. Iredale, 1927 - syn of: Natica arachnoidea (J.F. Gmelin, 1791) - (NATICIDAE)
- schepmani, Natica schepmani E.J. Koperberg, 1931 - syn of: Natica koperbergae A.N. van der Bijl & R.G. Moolenbeek, 2009 - (NATICIDAE)
- schepmani, Neilonella schepmani B. Prashad, 1932 - (NEILONELLIDAE)
- schepmani, Oliva schepmani N.E. Weisbord, 1962 - syn of: Oliva tisiphona schepmani N.E. Weisbord, 1962 - (OLIVIDAE)
- schepmani, Oliva tisiphona schepmani N.E. Weisbord, 1962 - (OLIVIDAE)
- schepmani, Gari schepmani B. Prashad, 1932 - syn of: Gari lessoni (H.M.D. de Blainville, 1826) - (PSAMMOBIIDAE)
- schepmani, Longchaeus schepmani E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- schepmani, Pagodidaphne schepmani (K.H.J. Thiele, 1925) - (RAPHITOMIDAE)
- schepmani, Tonna schepmani F.M. Bayer, 1937 - syn of: Tonna chinensis (L.W. Dillwyn, 1817) - (TONNIDAE)
- schepmani, Trivellona schepmani (F.A. Schilder, 1941) - (TRIVIIDAE)
- schepmani, Lucerapex schepmani T. Shuto, 1970 - (TURRIDAE)
- Schepmania, Genus Schepmania T. Shuto, 1970 (UNIONIDAE)
- schepmaniana, Argyropeza schepmaniana J.C. Melvill, 1912 - (CERITHIIDAE)
- schepmanni, Lanistes congicus schepmanni C.R. Böttger, 1913 - (AMPULLARIIDAE)
- Schepmanotropis, syn of: Genus Calliotropis G. Seguenza, 1903 (CALLIOTROPIDAE)
- schepstonensis, Cerithiopsis schepstonensis J.R. le B. Tomlin, 1923 - (CERITHIOPSIDAE)
- scheremetus, Aviculopecten scheremetus Guskov, 1984 † - (AVICULOPECTINIDAE) (FOSSIL)
- schereri, Helicina schereri F.C. Baker, 1913 - (HELICINIDAE)
- scherinus, Proconulus scherinus (C. Gemmellaro, 1874 †) - (PROCONULIDAE) (FOSSIL)
- scherzeri, Rossmaessleria scherzeri (L. Pfeiffer & J. Zelebor, 1867) - (HELICIDAE)
- scherzeri, Hydrocena scherzeri L. Pfeiffer & J. Zelebor, 1867 - syn of: Assiminea nitida (W.H. Pease, 1864) - (HYDROCENIDAE)
- scheuchzerianus, Euturrilites scheuchzerianus Breistroffer, 1953 † - (TURRILITIDAE) (FOSSIL)
- scheuchzerianus, Turrilites scheuchzerianus L.A.G. d'A. Bosc, 1801 † - (TURRILITIDAE) (FOSSIL)
- schevilli, Sinumelon schevilli W.J. Clench & S. Archer, 1938 - (CAMAENIDAE)
- schiaparellii, Joculator schiaparellii Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- schiedeanus, Rabdotus schiedeanus (L. Pfeiffer, 1841) - (BULIMULIDAE)
- schiedeanus, Oxymelania schiedeanus (R.A. Philippi, 1843) - (PACHYCHILIDAE)
- schiedeanus, Melania schiedeanus R.A. Philippi, 1843 - syn of: Oxymelania schiedeanus (R.A. Philippi, 1843) - (THIARIDAE)
- schiedeanus pecosensis, Rabdotus schiedeanus pecosensis H.A. Pilsbry & J.H. Ferriss, 1897 - (BULIMULIDAE)
- schiedeanus strebelianus, Oxymelania schiedeanus strebelianus P.H. Fischer & J.C.H. Crosse, 1892 - (PACHYCHILIDAE)
- schiefferdeckeri, Richardsonoceroides schiefferdeckeri (Dewitz, 1880 †) - (ONCOCERATIDAE) (FOSSIL)
- schiemenzi, Entocolax schiemenzi W. Voigt, 1901 - (EULIMIDAE)
- schilderi, Afrozoila schilderi (A. Dey, 1961 †) - (CYPRAEIDAE) (FOSSIL)
- schilderi, Eosephaea schilderi Renard, 1994 † - (VOLUTIDAE) (FOSSIL)
- Schilderia, Genus Schilderia J.R. le B. Tomlin, 1930 (CYPRAEIDAE)
- schilderiana, Cypraea tigris schilderiana C.N. Cate, 1961 - (CYPRAEIDAE)
- schilderorum, Lyncina schilderorum (T. Iredale, 1939) - (CYPRAEIDAE)
- schilderorum, Cypraea schilderorum T. Iredale, 1939 - syn of: Lyncina schilderorum (T. Iredale, 1939) - (CYPRAEIDAE)
- schilderorum, Margovula schilderorum C.N. Cate, 1973 - syn of: Margovula marginata (G.B. I Sowerby, 1828) - (OVULIDAE)
- Schileykiella, Genus Schileykiella G. Manganelli, I. Sparacio & F.L. Giusti, 1989 (HYGROMIIDAE)
- schileykoi, Amphidromus schileykoi Thach, 2016 - (CAMAENIDAE)
- schileykoi, Pterocyclos schileykoi Thach & F. Huber, 2017 - (CYCLOPHORIDAE)
- schileykoi, Pseudonapaeus schileykoi Z.I. Izzatullaev, 1991 - (ENIDAE)
- schileykoi, Leucozonella schileykoi A.P. Pazylov & Kuchbaev, 2001 - (HYGROMIIDAE)
- schileykoi, Caucasigena schileykoi R.A. Tavasiev & Tavasieva, 1980 - (HYGROMIIDAE)
- schileykoi, Metafruticicola schileykoi V. Hüdec, 1972 - syn of: Circassina frutis veselyi (Z. Frankenberger, 1919) - (HYGROMIIDAE)
- schileykoi, Microcolpia schileykoi Y.I. Starobogatov, 1992 - (MELANOPSIDAE)
- Schileykula, Genus Schileykula E. Gittenberger, 1983 (ORCULIDAE)
- schilfi, Callochiton schilfi E. Schwabe & B. Ruthensteiner, 2001 - (CALLOCHITONIDAE)
- schilleri, Choffatia schilleri Parent & C. Garrido, 2015 † - (PERISPHINCTIDAE) (FOSSIL)
- schillingi, Crassispira schillingi (H.C. Weinkauff & W. Kobelt, 1876) - (PSEUDOMELATOMIDAE)
- schilovkensis, Volgoceratoides schilovkensis Mikhailova & Baraboshkin, 2002 † - (ANCYLOCERATIDAE) (FOSSIL)
- Schimospira, syn of: Genus Torellia S.L. Lovén in J.G. Jeffreys, 1867 (CAPULIDAE)
- schindewolfi, Kamerunoceras schindewolfi M. Collignon, 1965 † - (ACANTHOCERATIDAE) (FOSSIL)
- schindewolfi, Crioceratites schindewolfi (Sarkar, 1955 †) - (CRIOCERATITIDAE) (FOSSIL)
- schindewolfi, Paraspiticeras schindewolfi Wiedmann, 1966 † - (EMERICICERATIDAE) (FOSSIL)
- schindewolfi, Kosmoclymenia schindewolfi W. Korn & J. Price, 1987 † - (KOSMOCLYMENIIDAE) (FOSSIL)
- schindewolfi, Ivoites schindewolfi De Baets & al., 2013 † - (MIMOSPHINCTIDAE) (FOSSIL)
- schindewolfi, Stenoclymenia schindewolfi C.N. Lange, 1929 † - (PLATYCLYMENIIDAE) (FOSSIL)
- schindewolfi, Lagowites schindewolfi (Matern, 1931 †) - (PRAEGLYPHIOCERATIDAE) (FOSSIL)
- schindewolfi, Metacanites schindewolfi Kullmann, 1963 † - (PROLECANITIDA (UNASSIGNED)) (FOSSIL)
- schindewolfi, Sporadoceras schindewolfi Matern, 1931 † - syn of: Lagowites schindewolfi (Matern, 1931 †) - (SPORADOCERATIDAE) (FOSSIL)
- Schindewolfites, syn of: Genus Kamerunoceras Reyment , 1954 † (ACANTHOCERATIDAE) (FOSSIL)
- Schindewolfoceras, Genus Schindewolfoceras Miller , 1938 † (TRIAINOCERATIDAE) (FOSSIL)
- schindleri, Strombopoma ortoni schindleri W. Blume, 1958 - (COCHLIOPIDAE)
- schinziana, Achatina schinziana A. Mousson, 1887 - (ACHATINIDAE)
- schinziana degenerata, Achatina schinziana degenerata O. Böttger, 1910 - syn of: Achatina dammarensis L. Pfeiffer, 1853 - (ACHATINIDAE)
- schinziana passargei, Achatina schinziana passargei E.C. Von Martens, 1900 - (ACHATINIDAE)
- schioettei, Anatoma schioettei T. Høisæter & D.L. Geiger, 2011 - (ANATOMIDAE)
- schioettei, Coralliophila schioettei C. Smriglio & P. Mariottini, 2000 - (MURICIDAE)
- schioettei, Lioconcha schioettei K.L. Lamprell & J.M. Healy, 2002 - (VENERIDAE)
- schiosensis, Caprina schiosensis Boehm, 1892 † - (CAPRINIDAE) (FOSSIL)
- schiosensis, Tylostoma schiosensis Boehm, 1895 † - (TYLOSTOMATIDAE) (FOSSIL)
- Schiosia, Genus Schiosia Böhm, 1892 † (CAPRINIDAE) (FOSSIL)
- schiottei, Lioconcha schiottei K.L. Lamprell & J.M. Healy, 2002 - (VENERIDAE)
- schirazensis, Galba schirazensis H.C. Küster, 1862 - (LYMNAEIDAE)
- schirazensis major, Theodoxus schirazensis major A. Issel, 1865 - syn of: Theodoxus pallasi W.A. Lindholm, 1924 - (NERITIDAE)
- schirjaevensis, Worthenia schirjaevensis Stuckenberg, 1905 † - (LOPHOSPIRIDAE) (FOSSIL)
- schirollii, Schaffhauseria schirollii J.J. Vermeulen & al., 2012 † - (HAMULINIDAE) (FOSSIL)
- schirrmeisteri, Conus schirrmeisteri J. Coltro, 2004 - syn of: Conasprella iansa (E.J. Petuch, 1979) - (CONIDAE)
- schismatica, Sedilia schismatica (W.H. Dall, 1892 †) - (HORAICLAVIDAE) (FOSSIL)
- Schismope, Genus Schismope Jeffreys, 1856 † (SCISSURELLIDAE) (FOSSIL)
- Schismope, syn of: Genus Sinezona H.J. Finlay, 1927 (SCISSURELLIDAE)
- Schismotis, syn of: Genus Haliotis C. Linnaeus, 1758 (HALIOTIDAE)
- schista, Chondrina multidentata schista (C.A. Westerlund, 1887) - (CHONDRINIDAE)
- Schistoceras, Genus Schistoceras Hyatt , 1884 † (SCHISTOCERATIDAE) (FOSSIL)
- SCHISTOCERATIDAE Schmidt, 1929 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-SCHISTOCERATOIDEA [Superfamily]) (FOSSIL)
- Schistodesmus, Genus Schistodesmus C.T. Simpson, 1900 (UNIONIDAE)
- Schistoloma, Genus Schistoloma W. Kobelt, 1902 (PUPINIDAE)
- Schistophallus, Genus Schistophallus A. Wagner, 1914 (ZONITIDAE)
- Schistophylloceras, Genus Schistophylloceras Hyatt in Eastman-Zittel, 1900 † (PHYLLOCERATIDA (UNASSIGNED)) (FOSSIL)
- Schistopinax, Subgenus Geophorus (Schistopinax) P. Bartsch, 1921 (HELICINIDAE)
- schistoptychia, Plectopylis schistoptychia (O.F. von Möllendorff, 1886) - (PLECTOPYLIDAE)
- Schistosomophora, syn of: Genus Oncomelania Gradler, 1881 (POMATIOPSIDAE)
- schistostelis, Sophina schistostelis (W.H. Benson) - (ARIOPHANTIDAE)
- schivelyae, Vaginulus schivelyae H.A. Pilsbry, 1890 - syn of: Veronicella cubensis (L. Pfeiffer, 1840) - (VERONICELLIDAE)
- Schizobasis, Genus Schizobasis Wade, 1916 † (PHOLIDOTOMIDAE) (FOSSIL)
- Schizobrachium, Genus Schizobrachium J. Meisenheimer, 1903 (PNEUMODERMATIDAE)
- Schizocardita, Genus Schizocardita Körner, 1937 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- Schizocheilus, syn of: Genus Gyrotoma R.J. Shuttleworth, 1845 (PLEUROCERIDAE)
- schizocheras, Mellopegma schizocheras Vendrasco & al., 2011 † - (STENOTHECIDAE) (FOSSIL)
- Schizochiton, Genus Schizochiton J.E. Gray, 1847 (SCHIZOCHITONIDAE)
- SCHIZOCHITONIDAE Dall, 1889 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]-CHITONIDA [Order]-CHITONINA [Suborder]-SCHIZOCHITONOIDEA [Superfamily])
- Schizocleithrum, syn of: Genus Contradens F. Haas, 1913 (UNIONIDAE)
- Schizoclymenia, Genus Schizoclymenia Schindewolf, 1923 † (CLYMENIIDA (UNASSIGNED)) (FOSSIL)
- Schizodentalium, Genus Schizodentalium G.B. Sowerby, 1894 (DENTALIIDAE)
- schizoderma, Lyrodus schizoderma K. Li, 1965 - syn of: Lyrodus bipartitus (J.G. Jeffreys, 1860) - (TEREDINIDAE)
- Schizodesma, syn of: Genus Scissodesma J.E. Gray, 1837 (MACTRIDAE)
- SCHIZODIDAE Newell & Boyd, 1975 † - Family (BIVALVIA-PALAEOHETERODONTA [Subclass]-TRIGONIIDA [Order]-TRIGONIOIDEA [Superfamily]) (FOSSIL)
- schizodiiformis, Kaibabella schizodiiformis C.C. Lu, 1986 † - (SCHIZODIDAE) (FOSSIL)
- Schizodiscus, syn of: Genus Kittlidiscus Haas, 1953 † (KITTLIDISCIDAE) (FOSSIL)
- schizodon, Gosseletia schizodon Frech, 1891 † - syn of: Gosseletia triquetra (T.A. Conrad, 1838 †) - (AMBONYCHIIDAE) (FOSSIL)
- Schizodus, Genus Schizodus King, 1844 † (SCHIZODIDAE) (FOSSIL)
- Schizoglossa, Genus Schizoglossa C. Hedley, 1893 (RHYTIDIDAE)
- SCHIZOGONIIDAE Cox, 1960 † - Family (GASTROPODA-VETIGASTROPODA [Subclass]-SCHIZOGONIOIDEA [Superfamily]) (FOSSIL)
- Schizogonium, Genus Schizogonium Koken, 1889 † (SCHIZOGONIIDAE) (FOSSIL)
- Schizoloboceras, Genus Schizoloboceras Zhao & al., 1978 † (PSEUDOTIROLITIDAE) (FOSSIL)
- Schizolopha, Genus Schizolopha Ulrich & Scofield, 1897 † (GOSSELETINIDAE) (FOSSIL)
- Schizopea, Genus Schizopea Butts, 1926 † (SINUOPEIDAE) (FOSSIL)
- Schizopile, Subgenus Coelocentrum (Schizopile) H.A. Pilsbry, 1939 (UROCOPTIDAE)
- SCHIZOPLACIDAE - syn of Family: ISCHNOCHITONIDAE
- SCHIZOPLACIDAE Bergenhayn, 1955 - Family (POLYPLACOPHORA-NEOLORICATA [Subclass]-CHITONIDA [Order]-ACANTHOCHITONINA [Suborder]-MOPALIOIDEA [Superfamily])
- Schizoplax, Genus Schizoplax W.H. Dall, 1878 (SCHIZOPLACIDAE)
- schizopyga, Nassarius schizopyga W.H. Dall, 1892 † - (NASSARIIDAE) (FOSSIL)
- schizopyga, Ilyanassa schizopyga (W.H. Dall, 1892 †) - (NASSARIIDAE) (FOSSIL)
- schizopyga, Globinassa schizopyga W.H. Dall, 1892 † - syn of: Ilyanassa schizopyga (W.H. Dall, 1892 †) - (NASSARIIDAE) (FOSSIL)
- Schizopyga, syn of: Subgenus Nassarius (Caesia) Adams & Adams, 1853 † (NASSARIIDAE) (FOSSIL)
- Schizopyga, syn of: Genus Tritia Risso, 1826 (NASSARIIDAE) (FOSSIL)
- Schizopyle, Subgenus Coelocentrum (Schizopyle) H.A. Pilsbry, 1939 (UROCOPTIDAE)
- schizoradulata, Plawenia schizoradulata (L. Salvini-Plawén, 1978) - (SIMROTHIELLIDAE)
- Schizostoma, Subgenus Euomphalus (Schizostoma) Bronn, 1834 † (EUOMPHALIDAE) (FOSSIL)
- Schizostomica, syn of: Subgenus Euomphalus (Schizostoma) Bronn, 1834 † (EUOMPHALIDAE) (FOSSIL)
- Schizothaerus, syn of: Genus Tresus J.E. Gray, 1853 (MACTRIDAE)
- Schizothaerus, syn of: Genus Thyasira J.B.P.A. Lamarck, 1818 (THYASIRIDAE)
- schizotoma, Arca schizotoma W.H. Dall, 1898 - syn of: Anadara trilineata calcarea Grant & H.R. Gale, 1931 † - (ARCIDAE)
- Schizotrochus, syn of: Genus Anatoma S. Woodward, 1859 (ANATOMIDAE)
- Schizotrochus, syn of: Genus Anatoma S. Woodward, 1859 (ANATOMIDAE)
- schlaeflii, Retowskia schlaeflii (A. Mousson, 1863) - (ENIDAE)
- schlaeflii, Helix schlaeflii Mousson, 1859 - (HELICIDAE)
- schlaerotricha, Helix schlaerotricha J.R. Bourguignat, 1870 - (HELICIDAE)
- schlagintweiti, Perissoptera schlagintweiti del Rio, 2002 † - (APORRHAIDAE) (FOSSIL)
- schlagintweiti, Diamanticeras schlagintweiti (Giovine, 1950 †) - (CRIOCERATITIDAE) (FOSSIL)
- schlaudti, Cleoniceras schlaudti Stoyanow, 1949 † - (HOPLITIDAE) (FOSSIL)
- schlechtii, Andraea dubia schlechtii A. Schmidt, 1856 - (CLAUSILIIDAE)
- schlegeli, Hyriopsis schlegeli (E.C. Von Martens, 1861) - (UNIONIDAE)
- schleschi, Deroceras schleschi A.V. Grossu & D. Lupu, 1961 - (AGRIOLIMACIDAE)
- schleschi, Belgrandiella schleschi (L. Kušcer, 1932) - (HYDROBIIDAE)
- Schleschia, syn of: Genus Notobranchaea J.P.L. Pelseneer, 1886 (NOTOBRANCHAEIDAE)
- Schleschiella, Subgenus Diplodon (Schleschiella) Modell, 1950 (HYRIIDAE)
- schlickumi, Acicula schlickumi (Schütt, 1967) † - (ACICULIDAE) (FOSSIL)
- schlickumi, Carychium schlickumi F. Strauch, 1977 - (ELLOBIIDAE)
- schlickumi, Triptychia schlickumi H. Nordsieck, 1972 † - (FILHOLIIDAE) (FOSSIL)
- schlickumi, Dianella schlickumi H. Schütt, 1962 - (HYDROBIIDAE)
- schlickumi, Tanousia schlickumi H. Schütt, 1976 † - (HYDROBIIDAE) (FOSSIL)
- schlickumi, Saxurinator schlickumi H. Schütt, 1960 - (HYDROBIIDAE)
- schlickumi, Urticicola schlickumi Nordsieck, 2014 † - (HYGROMIIDAE) (FOSSIL)
- schlickumi, Agapilia schlickumi T. Kowalke & Reichenbacher, 2005 † - (NERITIDAE) (FOSSIL)
- schlickumi, Hubendickia schlickumi (R.A.M. Brandt, 1968) - (POMATIOPSIDAE)
- schlickumi, Paraprososthenia schlickumi R.A.M. Brandt, 1968 - syn of: Hubendickia schlickumi (R.A.M. Brandt, 1968) - (POMATIOPSIDAE)
- schlickumi, Staadtiellopsis schlickumi D. Kadolsky & Piechocki, 2000 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- schlickumi, Ctyrokya schlickumi P. Ctyroký, 1969 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- schlickumi, Stenothyra schlickumi R.A.M. Brandt, 1968 - (STENOTHYRIDAE)
- Schlickumia, Genus Schlickumia Truc, 1971 † (HELICIDAE) (FOSSIL)
- schlieffeni, Suecoceras schlieffeni (Rügiger, 1892 †) - (ENDOCERATIDAE) (FOSSIL)
- schloegli, Bastelia schloegli J.J. Vermeulen & al., 2012 † - (HAMULINIDAE) (FOSSIL)
- schloenbachi, Ammonites schloenbachi Fritsch, 1893 † - syn of: Prionocyclus germari (A.E. Reuss, 1845 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- schloenbachi, Coroniceras schloenbachi (Reynès, 1879 †) - (ARIETITIDAE) (FOSSIL)
- schloenbachi, Lobites schloenbachi Mojsisovics, 1875 † - (LOBITIDAE) (FOSSIL)
- schloenbachi, Gonimyrtea droueti schloenbachi (A. von Koenen, 1868) † - (LUCINIDAE) (FOSSIL)
- schloenbachi, Nautilus schloenbachi Mojsisovics, 1873 † - syn of: Germanonautilus schloenbachi (Mojsisovics, 1873 †) - (NAUTILIDAE) (FOSSIL)
- schloenbachi, Nostoceras schloenbachi (J. Favre, 1869 †) - (NOSTOCERATIDAE) (FOSSIL)
- schloenbachi, Erymnoceras schloenbachi F. Roman, 1930 † - (PACHYCERATIDAE) (FOSSIL)
- schloenbachi, Procerites schloenbachi (De Grossouvre 1907 †) - (PERISPHINCTIDAE) (FOSSIL)
- schloenbachi, Germanonautilus schloenbachi (Mojsisovics, 1873 †) - (TAINOCERATIDAE) (FOSSIL)
- Schloenbachia, Genus Schloenbachia Neumayr, 1875 † (SCHLOENBACHIIDAE) (FOSSIL)
- SCHLOENBACHIIDAE Parona & Bonarelli, 1897 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-HOPLITOIDEA [Superfamily]) (FOSSIL)
- schlosseri, Granaria schlosseri (Cossmann, 1908) † - (CHONDRINIDAE) (FOSSIL)
- schlosseri, Archoceras schlosseri Gallwitz, 1938 † - (GEPHUROCERATIDAE) (FOSSIL)
- schlosseri, Hydrobia schlosseri Royo Gómez, 1928 † - (HYDROBIIDAE) (FOSSIL)
- schlosseri, Lytoceras schlosseri (Krenkel, 1910 †) - (LYTOCERATIDAE) (FOSSIL)
- schlosseri, Nautilus schlosseri von Loesch, 1914 † - syn of: Pseudaganides schlosseri (von Loesch, 1914 †) - (NAUTILIDAE) (FOSSIL)
- schlosseri, Ornithopecten schlosseri (Bittner, 1902 †) - (ORNITHOPECTINIDAE) (FOSSIL)
- schlosseri, Pseudaganides schlosseri (von Loesch, 1914 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- schlosseri, Valvata schlosseri Royo Gómez, 1992 - (VALVATIDAE)
- schlosseriana, Pseudochloritis schlosseriana (Š. Brusina, 1874 †) - (ELONIDAE) (FOSSIL)
- schlosseriana, Peringia schlosseriana Š. Brusina, 1870 - syn of: Peringia elongata (R.A. Philippi, 1836) - (HYDROBIIDAE)
- schlotheimi, Sosiolytes schlotheimi C. Gemmellaro, 1889 † - (ANOMPHALIDAE) (FOSSIL)
- schlotheimi, Perissoptera schlotheimi (A. Römer, 1841 †) - (APORRHAIDAE) (FOSSIL)
- schlotheimi, Emarginula schlotheimi C.L.F. von Sandberger, 1859 † - (FISSURELLIDAE) (FOSSIL)
- schlotheimi, Nassarius schlotheimi A.H.E. Beyrich, 1854 † - (NASSARIIDAE) (FOSSIL)
- schlotheimi, Nautilus schlotheimi von Loesch, 1914 † - syn of: Pseudaganides schlotheimi (von Loesch, 1914 †) - (NAUTILIDAE) (FOSSIL)
- schlotheimi, Pseudaganides schlotheimi (von Loesch, 1914 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- schlotheimi, Schizodus schlotheimi (H.B. Geinitz, 1841 †) - (SCHIZODIDAE) (FOSSIL)
- schlotheimi, Bensbergia schlotheimi (d'Archiac & de Verneuil, 1842 †) - (SOLENISCIDAE) (FOSSIL)
- schlotheimi, Macrochilina schlotheimi d'Archiac & de Verneuil, 1842 † - syn of: Bensbergia schlotheimi (d'Archiac & de Verneuil, 1842 †) - (SOLENISCIDAE) (FOSSIL)
- Schlotheimia, Genus Schlotheimia Bayle , 1878 † (SCHLOTHEIMIIDAE) (FOSSIL)
- schlotheimii, Cucullaea schlotheimii H.B. Geinitz, 1841 † - syn of: Schizodus schlotheimi (H.B. Geinitz, 1841 †) - (CUCULLAEIDAE) (FOSSIL)
- schlotheimii, Spondylus schlotheimii Klipstein, 1843 † - syn of: Hinnites obliquus Münster, 1841 † - (SPONDYLIDAE) (FOSSIL)
- SCHLOTHEIMIIDAE Spath, 1923 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-PSILOCERATOIDEA [Superfamily]) (FOSSIL)
- Schlotheimites, Genus Schlotheimites Berger, 1982 † (TENTACULITA (UNASSIGNED)) (FOSSIL)
- schlotteri, Delima binotata schlotteri K. Brancsik, 1890 - (CLAUSILIIDAE)
- schlueteri, Sharpeiceras schlueteri A. Hyatt, 1903 † - (ACANTHOCERATIDAE) (FOSSIL)
- schlueteri, Astele schlueteri (Woods †) - (CALLIOSTOMATIDAE) (FOSSIL)
- schlueteri, Eutrochus schlueteri Woods † - syn of: Astele schlueteri (Woods †) - (CALLIOSTOMATIDAE) (FOSSIL)
- schlueteri, Juttingia schlueteri (O. Böttger, 1879.) - (CLAUSILIIDAE)
- schlueteri, Helicina schlueteri A.J. Wagner, 1905 - (HELICINIDAE)
- schlueteri, Trochus schlueteri G.B. Sowerby, 1894 - (TROCHIDAE)
- schlueteri, Trochus schlueteri Woods † - syn of: Astele schlueteri (Woods †) - (TROCHIDAE) (FOSSIL)
- schlueteri chanchamayensis, Helicina schlueteri chanchamayensis A.J. Wagner, 1911 - (HELICINIDAE)
- schlueteri densesulcata, Helicina schlueteri densesulcata A.J. Wagner, 1911 - (HELICINIDAE)
- schlumbergeri, Chenopus schlumbergeri A.E.M. Cossmann, 1904 † - syn of: Phyllocheilus schlumbergeri (A.E.M. Cossmann, 1904 †) - (APORRHAIDAE) (FOSSIL)
- schlumbergeri, Janiopsis schlumbergeri (A.E.M. Cossmann, 1889 †) - (BUCCINIDAE) (FOSSIL)
- schlumbergeri, Cenoceras schlumbergeri (Terquem, 1855 †) - (CENOCERATIDAE) (FOSSIL)
- schlumbergeri, Domenginella schlumbergeri (Raincourt, 1885 †) - (CLATHURELLIDAE) (FOSSIL)
- schlumbergeri, Latirus schlumbergeri A.E.M. Cossmann, 1889 † - syn of: Janiopsis schlumbergeri (A.E.M. Cossmann, 1889 †) - (FASCIOLARIIDAE) (FOSSIL)
- schlumbergeri, Phyllocheilus schlumbergeri (A.E.M. Cossmann, 1904 †) - (HARPAGODIDAE) (FOSSIL)
- schlumbergeri, Berthelinia schlumbergeri P. Dautzenberg, 1895 - (JULIIDAE)
- schlumbergeri, Nautilus schlumbergeri Terquem, 1855 † - syn of: Cenoceras schlumbergeri (Terquem, 1855 †) - (NAUTILIDAE) (FOSSIL)
- schlumbergeri, Halongella schlumbergeri (L.J. Morlet, 1886) - (PLECTOPYLIDAE)
- schlumbergeri, Turbonilla schlumbergeri P. Dautzenberg & H. Fischer, 1896 - (PYRAMIDELLIDAE)
- schlumbergeri, Ringicula schlumbergeri L.J. Morlet, 1882 - (RINGICULIDAE)
- schlumbergeri continentalis, Eulimella schlumbergeri continentalis F. Nordsieck, 1972 - syn of: Eulimella acicula (R.A. Philippi, 1836) - (PYRAMIDELLIDAE)
- schlumbergi, Atreta schlumbergi E.C. Munier-Chalmas, 1886 † - (DIMYIDAE) (FOSSIL)
- schlumbergi, Gordenella schlumbergi (Eudes-Deslongchamps, 1866 †) - (GORDENELLIDAE) (FOSSIL)
- Schluteria, syn of: Genus Desmophyllites Spath , 1829 † (DESMOCERATIDAE) (FOSSIL)
- schmackeri, Euhadra schmackeri (O.F. von Möllendorff, 1888) - (BRADYBAENIDAE)
- schmackeri, Pterocyclus schmackeri O.F. von Möllendorff, 1897 - (CYCLOPHORIDAE)
- schmackeri, Hippeutis schmackeri (S. Clessin, 1886) - (PLANORBIDAE)
- schmackeri, Sinicola schmackeri B. Páll-Gergely, 2013 - (PLECTOPYLIDAE)
- schmackeri, Phosinella schmackeri (O. Böttger, 1887) - (RISSOINIDAE)
- schmackeri, Rissoina schmackeri O. Böttger, 1887 - syn of: Phosinella schmackeri (O. Böttger, 1887) - (RISSOINIDAE)
- schmackeri, Semisulcospira praenotata schmackeri (O. Böttger, 1886) - (SEMISULCOSPIRIDAE)
- schmackeriana, Microcystina schmackeriana O.F. von Möllendorff, 1883 - (ARIOPHANTIDAE)
- schmackeriana, Cassidula schmackeriana O.F. von Möllendorff, 1885 - (ELLOBIIDAE)
- schmackerii, Hemiphaedusa schmackerii (E.R. Sykes, 1895) - (CLAUSILIIDAE)
- schmackerii, Trochomorpha schmackerii O.F. von Möllendorff, 1894 - (TROCHOMORPHIDAE)
- schmalenseei, Ctenodonta schmalenseei Isberg, 1934 † - (CTENODONTIDAE) (FOSSIL)
- schmalenseei, Cyrtodonta schmalenseei Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- schmalzi, Caucasocressa schmalzi B. Hausdorf & G. Falkner, 2001 - (HYGROMIIDAE)
- schmalzi, Mikadotrochus schmalzi T. Shikama, 1961 - syn of: Mikadotrochus salmianus (H. Rolle, 1899) - (PLEUROTOMARIIDAE)
- schmekelae, Notaeolidia schmekelae H. Wägele, 1990 - (NOTAEOLIDIIDAE)
- schmeltziana, Discodoris schmeltziana L.S.R. Bergh, 1880 - (DISCODORIDIDAE)
- schmeltziana, Nerita schmeltziana R.W. Dunker, 1869 - syn of: Nerita argus C.A. Récluz, 1841 - (NERITIDAE)
- schmeltziana, Erato schmeltziana J.C.H. Crosse, 1867 - syn of: Eratoena sulcifera (J.E. Gray in G.B. I Sowerby, 1832) - (TRIVIIDAE)
- schmeltzii, Pecten schmeltzii R.W. Dunker in H.C. Küster & W. Kobelt, 1888 - syn of: Pascahinnites coruscans (R.B. Hinds, 1845) - (PECTINIDAE)
- schmideliana, Velates schmideliana C.T. Trechmann, 1923 † - syn of: Velates perversus (J.F. Gmelin, 1791 †) - (NERITIDAE) (FOSSIL)
- schmidi, Phenacovolva schmidi D. Fehse & V. Wiese, 1993 - (OVULIDAE)
- schmidti, Scurriopsis schmidti (R.W. Dunker, 1847 †) - (ACMAEIDAE) (FOSSIL)
- schmidti, Ancilla schmidti C. Beets, 1984 † - (ANCILLARIIDAE) (FOSSIL)
- schmidti, Monia schmidti (L. Krishtofovich, 1964 †) - (ANOMIIDAE) (FOSSIL)
- schmidti, Macrochlamys schmidti K. Brancsik, 1891 - (ARIOPHANTIDAE)
- schmidti, Macrochlanys schmidti S. Clessin, 1894 - syn of: Macrochlamys clessini C.A. Westerlund, 1902 - (ARIOPHANTIDAE)
- schmidti, Drymaeus schmidti (L. Pfeiffer, 1854) - (BULIMULIDAE)
- schmidti, Pyruella schmidti E.J. Petuch, 1994 † - (BUSYCONIDAE) (FOSSIL)
- schmidti, Bythinella schmidti (H.C. Küster, 1852) - (BYTHINELLIDAE)
- schmidti, Pseudocadoceras schmidti (Pompeckj, 1900 †) - (CADOCERATIDAE) (FOSSIL)
- schmidti, Pyruclia schmidti B.M. Landau & al., 2012 † - (CANCELLARIIDAE) (FOSSIL)
- schmidti, Ciliatocardium schmidti (Khramova, 1962 †) - (CARDIIDAE) (FOSSIL)
- schmidti, Diacria schmidti S. Van Der Spoel, 1971 - (CAVOLINIIDAE)
- schmidti, Cenoceras schmidti (Giebel, 1852 †) - (CENOCERATIDAE) (FOSSIL)
- schmidti, Cerithium schmidti H.S. Ladd, 1972 - syn of: Cerithium balteatum R.A. Philippi, 1848 - (CERITHIIDAE)
- schmidti, Staffites schmidti J.D. Petersen, 1975 † - (CHEILOCERATIDAE) (FOSSIL)
- schmidti, Alopia plumbea schmidti M. von Kimakowicz, 1894 - (CLAUSILIIDAE)
- schmidti, Delima blanda schmidti H. Nordsieck, 1993 - (CLAUSILIIDAE)
- schmidti, Medora almissana schmidti H. Nordsieck, 1970 - (CLAUSILIIDAE)
- schmidti, Stabilea costata schmidti H. Nordsieck, 2007 - (CLAUSILIIDAE)
- schmidti, Thliptodon schmidti A. Pruvot-Fol, 1942 - (CLIONIDAE)
- schmidti, Scalarina scalarinum schmidti F.E. De Betta, 1870 - (COCHLOSTOMATIDAE)
- schmidti, Omphaloptycha schmidti Assmann, 1924 † - (COELOSTYLINIDAE) (FOSSIL)
- schmidti, Contraconus schmidti E.J. Petuch, 1991 † - syn of: Contraconus adversarius (T.A. Conrad, 1840 †) - (CONIDAE) (FOSSIL)
- schmidti, Opisthoporus schmidti E.C. Von Martens, 1908 - syn of: Opisthoporus pterocycloides (L. Pfeiffer, 1854) - (CYCLOPHORIDAE)
- schmidti, Cyrtendoceras schmidti Holm, 1892 † - (CYRTENDOCERATIDAE) (FOSSIL)
- schmidti, Strandoceras schmidti (Teichert, 1930 †) - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- schmidti, Zospeum schmidti G.R. von Frauenfeld, 1854 - syn of: Zospeum spelaeum (E.A. Rossmässler, 1839) - (ELLOBIIDAE)
- schmidti, Goniatites schmidti Patteisky, 1930 † - (GONIATITIDAE) (FOSSIL)
- schmidti, Promathildia schmidti Walther, 1951 † - syn of: Mathilda schmidti (Walther, 1951 †) - (GORDENELLIDAE) (FOSSIL)
- schmidti, Arianta schmidti E.A. Rossmässler, 1836 - (HELICIDAE)
- schmidti, Vallites schmidti Ruzhentsev & Bogoslovskaya, 1971 † - (HOMOCERATIDAE) (FOSSIL)
- schmidti, Inoceramus schmidti Michael, 1899 † - (INOCERAMIDAE) (FOSSIL)
- schmidti, Pararaphistoma schmidti (E.F.R.K. Koken, 1889 †) - (LESUEURILLIDAE) (FOSSIL)
- schmidti, Limax schmidti H.R. Simroth, 1912 - (LIMACIDAE)
- schmidti, Oenopota schmidti H.B.S. Friele, 1886 - syn of: Oenopota harpa (W.H. Dall, 1885) - (MANGELIIDAE)
- schmidti, Mastigoteuthis schmidti E. Degner, 1925 - (MASTIGOTEUTHIDAE)
- schmidti, Mathilda schmidti (Walther, 1951 †) - (MATHILDIDAE) (FOSSIL)
- schmidti, Nordophiceras schmidti (Mojsisovics, 1886 †) - (MEEKOCERATIDAE) (FOSSIL)
- schmidti, Melanopsis schmidti M. von Neumayr, 1880 † - syn of: Melanopsis sporadum J.R. Tournouër, 1876 † - (MELANOPSIDAE) (FOSSIL)
- schmidti, Ecphora schmidti E.J. Petuch, 1988 † - (MURICIDAE) (FOSSIL)
- schmidti, Engoniophos schmidti B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (NASSARIIDAE) (FOSSIL)
- schmidti, Propeleda schmidti L. Krishtofovich, 1964 † - (NUCULANIDAE) (FOSSIL)
- schmidti, Pteroctopus schmidti (L.M.A.O.E. Joubin, 1933) - (OCTOPODIDAE)
- schmidti, Ormoceras schmidti Balaschov, 1955 † - (ORMOCERATIDAE) (FOSSIL)
- schmidti, Ctenoceras schmidti Noetling, 1884 † - (ORTHOCERATIDAE) (FOSSIL)
- schmidti, Phenacovolva schmidti D. Fehse & V. Wiese, 1993 - syn of: Phenacovolva schmidi D. Fehse & V. Wiese, 1993 - (OVULIDAE)
- schmidti, Ensis schmidti A.A. Olsson, 1914 † - (PHARIDAE) (FOSSIL)
- schmidti, Bulinus schmidti R.W. Dunker, 1853 - syn of: Pyrgophysa forskalii (C.G. Ehrenberg, 1831) - (PLANORBIDAE)
- schmidti, Raphistoma schmidti E.F.R.K. Koken, 1889 † - syn of: Pararaphistoma schmidti (E.F.R.K. Koken, 1889 †) - (RAPHISTOMATIDAE) (FOSSIL)
- schmidti, Melania schmidti E.C. Von Martens, 1908 - syn of: Brotia pageli (K.H.J. Thiele, 1908) - (THIARIDAE)
- schmidti, Thracia schmidti L. Krishtofovich, 1947 † - (THRACIIDAE) (FOSSIL)
- schmidti, Triphora schmidti M.M. Schepman, 1909 - (TRIPHORIDAE)
- schmidti, Trochonema schmidti E.F.R.K. Koken, 1897 † - (TROCHONEMATIDAE) (FOSSIL)
- schmidti, Calverturris schmidti E.J. Petuch, 1993 † - (TURRIDAE) (FOSSIL)
- schmidti, Danateuthis schmidti L.M.A.O.E. Joubin, 1929 - syn of: Vampyroteuthis infernalis C. Chun, 1903 - (VAMPYROTEUTHIDAE)
- schmidti, Hyalinia schmidti O.W. Von Rosen, 1914 - syn of: Ortizius caspius (O. Böttger, 1880) - (ZONITIDAE)
- schmidti occidentalis, Diacria schmidti occidentalis Leyen & S. Van Der Spoel, 1982 - (CAVOLINIIDAE)
- schmidti opaca, Bythinella schmidti opaca (H.C. Küster, 1852) - (BYTHINELLIDAE)
- schmidtiana, Andraea dubia schmidtiana S. Clessin, 1887 - (CLAUSILIIDAE)
- schmidtii, Julica schmidtii (L. Pfeiffer, 1841) - (CLAUSILIIDAE)
- schmidtii, Sadleriana schmidtii (K.T. Menke, 1849) - (HYDROBIIDAE)
- schmidtii, Adula schmidtii (L. von Schrenck, 1867) - (MYTILIDAE)
- schmidtii, Modiolus schmidtii L. von Schrenck, 1867 - syn of: Adula schmidtii (L. von Schrenck, 1867) - (MYTILIDAE)
- schmidtii, Illyriobanatica schmidtii (H.C. Küster, 1843) - (ORCULIDAE)
- schmidtii, Patella schmidtii R.W. Dunker, 1847 † - syn of: Scurriopsis schmidti (R.W. Dunker, 1847 †) - (PATELLIDAE) (FOSSIL)
- schmidtii rablensis, Julica schmidtii rablensis (H.T. von Gallenstein, 1852) - (CLAUSILIIDAE)
- schmidtii sigridae, Julica schmidtii sigridae H. Nordsieck, 2006 - (CLAUSILIIDAE)
- schmidtii transversalis, Illyriobanatica schmidtii transversalis (C.A. Westerlund, 1894) - (ORCULIDAE)
- Schmidtoceras, Genus Schmidtoceras Westermann, 1956 † (ENDOCERIDA (UNASSIGNED)) (FOSSIL)
- schmiederi, Megalomphalus schmiederi J.H. McLean, 1996 - (VANIKORIDAE)
- schmiereri, Leptosphinctes schmiereri (Bentz, 1924 †) - (PERISPHINCTIDAE) (FOSSIL)
- schmiererianus, Tropicorbis schmiererianus W.A. Biese, 1951 - (PLANORBIDAE)
- schmitti, Littorina schmitti P. Bartsch & H.A. Rehder, 1939 - syn of: Littoraria pintado pullata (P.P. Carpenter, 1864) - (LITTORINIDAE)
- schmitti, Turbonilla schmitti P. Bartsch, 1917 - (PYRAMIDELLIDAE)
- schmitti, Scaphella dubia schmitti (P. Bartsch, 1931) - (VOLUTIDAE)
- schmitzleri, Vaginulus schmitzleri R.J. Shuttleworth, 1843 - (VERONICELLIDAE)
- schneehageni, Euprymna schneehageni (G.J. Pfeffer, 1884) - (SEPIOLIDAE)
- schneideri, Mulceodens schneideri Johnston & Chatterton, 1983 † - (BRANSONIIDAE) (FOSSIL)
- schneideri, Buccinum undatum schneideri T.A. Verkrüzen, 1885 - (BUCCINIDAE)
- schneideri, Cylindrobullina schneideri J. Gründel, 1997 † - (CYLINDROBULLINIDAE) (FOSSIL)
- schneideri, Bistolida schneideri F.A. Schilder, 1938 - syn of: Bistolida kieneri depriesteri F.A. Schilder, 1933 - (CYPRAEIDAE)
- schneideri, Manganellia schneideri M. Harzhauser & T.A. Neubauer, 2014 † - (DISCIDAE) (FOSSIL)
- schneideri, Ficus schneideri Morrison, 2016 - (FICIDAE)
- schneideri, Propebela schneideri M. Yokoyama, 1922 - syn of: Propebela assimilis (Sars, 1878) - (MANGELIIDAE)
- schneideri, Platevindex schneideri (H. Hoffmann, 1932) - (ONCHIDIIDAE)
- schneideri, Oncis schneideri H. Hoffmann, 1932 - syn of: Platevindex schneideri (H. Hoffmann, 1932) - (ONCHIDIIDAE)
- schneideri, Vitrea schneideri F. Riedel & P.L. Reischütz, 1988 - (PRISTILOMATIDAE)
- schneideri, Arabitrigonia schneideri M.R. Cooper, 2016 † - (PTEROTRIGONIIDAE) (FOSSIL)
- schneideri, Nausitora schneideri C.E. von Moll, 1935 - syn of: Nausitora dunlopei (B.H. Wright, 1864) - (TEREDINIDAE)
- schneideri, Cypraeerato schneideri (F.A. Schilder, 1933) - (TRIVIIDAE)
- schneideri, Velutina schneideri H.B.S. Friele, 1886 - (VELUTINIDAE)
- schneidi, Nautilus schneidi von Loesch, 1914 † - syn of: Pseudaganides schneidi (von Loesch, 1914 †) - (NAUTILIDAE) (FOSSIL)
- schneidi, Pomatias antiquus schneidi (Jooss, 1912 †) - (POMATIIDAE) (FOSSIL)
- schneidi, Pseudaganides schneidi (von Loesch, 1914 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- Schneidia, Subgenus Ataxioceras (Schneidia) Atrops, 1982 † (PERISPHINCTIDAE) (FOSSIL)
- schnelli, Strumosa abanti schnelli H. Nordsieck, 1984 - (CLAUSILIIDAE)
- schnelliana, Paphia schnelliana (R.W. Dunker, 1865) - (VENERIDAE)
- schnelliana, Paphia schnelliana F.J. Springsteen & C.B. Leobrera, 1986 - syn of: Paphia declivis (G.B. II Sowerby, 1852) - (VENERIDAE)
- schniebsae, Nicolaia schniebsae Glöer, Bößneck, Walther & Neiber, 2016 - (HYDROBIIDAE)
- schniebsae, Balkanospeum schniebsae (D.G. Georgiev, 2011) - (HYDROBIIDAE)
- schniebsae, Bythiospeum schniebsae D.G. Georgiev, 2011 - syn of: Balkanospeum schniebsae (D.G. Georgiev, 2011) - (HYDROBIIDAE)
- schnireli, Cassis schnireli E.J. Petuch, 1994 † - syn of: Cassis floridensis H.I. Tucker & D. Wilson, 1932 † - (CASSIDAE) (FOSSIL)
- schnireli, Myakkacypraea schnireli E.J. Petuch, 2004 † - (CYPRAEIDAE) (FOSSIL)
- schnitnikovi, Pseudonapaeus schnitnikovi W.A. Lindholm, 1922 - (ENIDAE)
- schnurii, Euomphalus schnurii d'Archiac & de Verneuil, 1842 † - (EUOMPHALIDAE) (FOSSIL)
- schnyrevae, Turoceras schnyrevae P.A. Zhuravleva, 1959 † - (POLYELASMOCERATIDAE) (FOSSIL)
- schoberti, Tricarilda schoberti A. Nützel & J. Gründel, 2015 † - (MATHILDIDAE) (FOSSIL)
- Schobertinella, Genus Schobertinella Nützel & Gründel, 2015 † (OMALOGYRIDAE) (FOSSIL)
- schoedei, Epitonium schoedei (K.H.J. Thiele, 1925) - (EPITONIIDAE)
- schoedei, Ptychobela schoedei K.H.J. Thiele, 1925 - (PSEUDOMELATOMIDAE)
- schoedei, Unio schoedei (F. Haas, 1930) - (UNIONIDAE)
- schoeferti, Hancockia schoeferti M. Schrödl, 1999 - (HANCOCKIIDAE)
- schoeningi, Litiopella schoeningi K. Bandel & S. Kiel, 2000 † - (LITIOPIDAE) (FOSSIL)
- schoenlaubi, Paranowakia schoenlaubi Alberti, 1985 † - (PARANOWAKIIDAE) (FOSSIL)
- schoenni, Nassarius schoenni (R. Hoernes & Aulinger, 1882 †) - (NASSARIIDAE) (FOSSIL)
- schoensis, Cercomya schoensis Futterer, 1897 † - (LATERNULIDAE) (FOSSIL)
- schohariae, Ormoceras schohariae Flower, 1940 † - (ORMOCERATIDAE) (FOSSIL)
- schohoriae, Convoluticeras schohoriae Flower, 1978 † - (TEICHERTICERATIDAE) (FOSSIL)
- schola, Elasmias schola T. Iredale, 1944 - (ACHATINELLIDAE)
- scholapii, Sagracoptis scholapii C. de la Torre & P. Bartsch, 1972 - syn of: Sagracoptis scholappi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- scholappi, Sagracoptis scholappi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- scholastica, Corbicula scholastica P.M. Heude, 1887 - syn of: Corbicula fluminea (O.F. Müller, 1774) - (CYRENIDAE)
- scholli, Nematurella scholli W.R. Schlickum, 1963 † - syn of: Nematurella bavarica (C.L.F. von Sandberger, 1875 †) - (HYDROBIIDAE) (FOSSIL)
- scholtzi, Hydrobia scholtzi A. Schmidt, 1856 - syn of: Marstoniopsis steinii (E.C. Von Martens, 1858) - (HYDROBIIDAE)
- scholtzi, Pisidium scholtzi S. Clessin, 1873 - syn of: Pisidium obtusale (J.B.P.A. Lamarck, 1818) - (SPHAERIIDAE)
- scholtzi lapponicum, Pisidium scholtzi lapponicum C.A. Westerlund, 1873 - syn of: Pisidium obtusale (J.B.P.A. Lamarck, 1818) - (SPHAERIIDAE)
- scholvieni, Pisania scholvieni H. Rolle, 1892 - (BUCCINIDAE)
- scholvieni, Kilburnia scholvieni (H. Strebel, 1911) - (FASCIOLARIIDAE)
- scholvieni, Fasciolaria scholvieni H. Strebel, 1912 - syn of: Kilburnia scholvieni (H. Strebel, 1911) - (FASCIOLARIIDAE)
- scholvieni, Pleuroploca scholvieni H. Strebel, 1912 - syn of: Kilburnia scholvieni (H. Strebel, 1911) - (FASCIOLARIIDAE)
- Scholvienia, Subgenus Thaumastus (Scholvienia) H. Strebel, 1910 (MEGASPIRIDAE)
- schombergiana, Castalia schombergiana G.B. Sowerby, 1869 - syn of: Castaliella sulcata (C.F.F. von Krauss, 1849) - (HYRIIDAE)
- schombergianus, Anodontites schombergianus G.B. Sowerby, 1870 - syn of: Anodontites carinata (R.W. Dunker, 1858) - (MYCETOPODIDAE)
- schombergianus, Ptychorhynchus schombergianus P.M. Heude, 1885 - syn of: Ptychorhynchus schomburgianus (P.M. Heude, 1885) - (UNIONIDAE)
- schombergki, Amphidromus schombergki L. Pfeiffer, 1860 - syn of: Amphidromus schomburgki (L. Pfeiffer, 1860) - (CAMAENIDAE)
- schombergki, Polinices schombergki R.F. Rutsch, 1934 † - syn of: Polinices stanislasmeunieri C.J. Maury, 1917 † - (NATICIDAE) (FOSSIL)
- schomburghkiana, Blandia schomburghkiana E. Chitty, 1857 - (HELICINIDAE)
- schomburgi, Grandinenia schomburgi (P.B. Schmacker & O. Böttger, 1890) - (CLAUSILIIDAE)
- schomburgiana, Tropidauchenia schomburgiana (P.B. Schmacker & O. Böttger, 1891) - (CLAUSILIIDAE)
- schomburgianus, Ptychorhynchus schomburgianus (P.M. Heude, 1885) - (UNIONIDAE)
- schomburgianus, Anodon schomburgianus G.B. Sowerby, 1870 - syn of: Anodontites carinata (R.W. Dunker, 1858) - (UNIONIDAE)
- schomburgki, Bulimus schomburgki L. Pfeiffer, 1860 - syn of: Amphidromus schomburgki (L. Pfeiffer, 1860) - (BULIMULIDAE)
- schomburgki, Amphidromus schomburgki (L. Pfeiffer, 1860) - (CAMAENIDAE)
- schomburgki, Austromitra schomburgki G.F. Angas, 1878 - syn of: Austromitra analogica (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- schomburgki, Melania schomburgki L.A. Reeve, 1859 - syn of: Sulcospira housei (I. Lea, 1856) - (THIARIDAE)
- schomburgki, Alasmidonta schomburgki G.B. Sowerby, 1868 - syn of: Monocondylaea paraguayana D'Orbigny, 1835 - (UNIONIDAE)
- schoolcrafti, Cyrtocerina schoolcrafti Ulrich, 1894 † - (CYRTOCERINIDAE) (FOSSIL)
- schoolerensis, Juvavites schoolerensis McLearn, 1947 † - syn of: Griesbachites humi McLearn, 1937 † - (JUVAVITIDAE) (FOSSIL)
- schooleri, Thanamites schooleri McLearn, 1930 † - (THANAMITIDAE) (FOSSIL)
- schoonerensis, Cochliolepis schoonerensis E.W.J. Moore, 1963 † - (TORNIDAE) (FOSSIL)
- schopeni, Sicanites schopeni C. Gemmellaro, 1887 † - (MEDLICOTTIIDAE) (FOSSIL)
- schorygini, Pyrgula schorygini B.M. Logvinenko & Y.I. Starobogatov, 1968 - (HYDROBIIDAE)
- schottii, Nerinea schottii T.A. Conrad, 1857 † - (NERINEIDAE) (FOSSIL)
- schottii, Chione schottii W.H. Dall, 1902 - syn of: Chamelea gallina (Linneus, 1758) - (VENERIDAE)
- schottleri, Pseudamnicola schottleri (W.A. Wenz, 1922 †) - (HYDROBIIDAE) (FOSSIL)
- schousboei, Unio schousboei É.A.A. Locard, 1899 - syn of: Unio abrantesianus É.A.A. Locard, 1899 - (UNIONIDAE)
- schoutanica, Pisania schoutanica W.L. May, 1910 - syn of: Cumia schoutanica (W.L. May, 1910) - (BUCCINIDAE)
- schoutanica, Cumia schoutanica (W.L. May, 1910) - (COLUBRARIIDAE)
- schoutanica, Drillia schoutanica W.L. May, 1911 - syn of: Epidirona schoutanica (W.L. May, 1911) - (DRILLIIDAE)
- schoutanica, Sabinella schoutanica (W.L. May, 1916) - (EULIMIDAE)
- schoutanica, Mesoginella schoutanica (W.L. May, 1913) - (MARGINELLIDAE)
- schoutanica, Tasmatica schoutanica (W.L. May, 1913) - (NATICIDAE)
- schoutanica, Notocochlis schoutanica W.L. May, 1913 - syn of: Tasmatica schoutanica (W.L. May, 1913) - (NATICIDAE)
- schoutanica, Epidirona schoutanica (W.L. May, 1911) - (PSEUDOMELATOMIDAE)
- schoutanica, Attenuata schoutanica (W.L. May, 1913) - (RISSOIDAE)
- schoutanica diatheca, Notocochlis schoutanica diatheca T. Iredale, 1936 - syn of: Tasmatica schoutanica (W.L. May, 1913) - (NATICIDAE)
- schoutanicus, Fusus schoutanicus W.L. May, 1910 - syn of: Cumia schoutanica (W.L. May, 1910) - (FASCIOLARIIDAE)
- schoutanicus conterminus, Fusus schoutanicus conterminus T. Iredale, 1925 - syn of: Cumia schoutanica (W.L. May, 1910) - (FASCIOLARIIDAE)
- schoutedeni, Limicolaria schoutedeni (P. Dautzenberg & J. Germain, 1914) - (ACHATINIDAE)
- schoutedeni, Hydrobia schoutedeni (J.C. Bequaert & W.J. Clench, 1936) - (HYDROBIIDAE)
- schoutedeni, Potadoma schoutedeni H.A. Pilsbry & C.E. Beecher, 1927 - (PACHYCHILIDAE)
- schoutedeni, Thiara schoutedeni P. Dautzenberg & J. Germain, 1914 - (THIARIDAE)
- schoutedeni, Chlamydarion schoutedeni G.A. de Mol, 1970 - (UROCYCLIDAE)
- schoutenensis, Marita schoutenensis (W.L. May, 1911) - (MANGELIIDAE)
- schouveri, Bernaya schouveri Dolin & Aguerre, 2016 † - (CYPRAEIDAE) (FOSSIL)
- schraderi, Cuthona schraderi (G.J. Pfeffer in E.C. Von Martens & G.J. Pfeffer, 1886) - (FIONIDAE)
- schraderi, Onoba schraderi (H. Strebel, 1908) - (RISSOIDAE)
- Schrambachoceras, Genus Schrambachoceras Boorová & al., 2015 † (PROTANCYLOCERATIDAE) (FOSSIL)
- schrami, Odostomia schrami J.J. Van Aartsen, E. Gittenberger & J. Goud, 1998 - (PYRAMIDELLIDAE)
- schrammeni, Proleymeriella schrammeni (Jacob, 2005 †) - (LEYMERIELLIDAE) (FOSSIL)
- schrammeni, Leymeriella schrammeni (Brinkmann, 1937 †) - (LEYMERIELLIDAE) (FOSSIL)
- schrammeni, Pomatias schrammeni (Andreae, 1902) † - (POMATIIDAE) (FOSSIL)
- schrammi, Pomella schrammi J.C.H. Crosse, 1876 - syn of: Pomacea sinamarina (J.G. Bruguière, 1792) - (AMPULLARIIDAE)
- schrammi, Aplysia schrammi G.P. Deshayes, 1857 - syn of: Aplysia dactylomela P.C.A.S.L. Rang, 1828 - (APLYSIIDAE)
- schrammi, Engina schrammi J.C.H. Crosse, 1863 - syn of: Muricopsis schrammi (J.C.H. Crosse, 1863) - (BUCCINIDAE)
- schrammi, Tonicia schrammi R.J. Shuttleworth, 1856 - (CHITONIDAE)
- schrammi, Mitrella schrammi S.A.A. Petit De La Saussaye, 1853 - syn of: Mitrella dichroa (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- schrammi, Columbella schrammi S.A.A. Petit De La Saussaye, 1853 - syn of: Mitrella dichroa (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- schrammi, Fusinus schrammi (J.C.H. Crosse, 1865) - (FASCIOLARIIDAE)
- schrammi, Alcadia schrammi (J.C.H. Crosse, 1872) - (HELICINIDAE)
- schrammi, Pegophysema schrammi (J.C.H. Crosse, 1876) - (LUCINIDAE)
- schrammi, Lucina schrammi J.C.H. Crosse, 1876 - syn of: Pegophysema schrammi (J.C.H. Crosse, 1876) - (LUCINIDAE)
- schrammi, Muricopsis schrammi (J.C.H. Crosse, 1863) - (MURICIDAE)
- schrammi, Amphicyclotus schrammi (R.J. Shuttleworth, 1857) - (NEOCYCLOTIDAE)
- schrammi, Onchidella schrammi T.B. Bland & W.G. Binney, 1874 - syn of: Onchidella armadilla (O.A.L. Mörch, 1863) - (ONCHIDIIDAE)
- schrammi, Aequipecten schrammi P. Fischer, 1868 - syn of: Lindapecten exasperatus (G.B. II Sowerby, 1842) - (PECTINIDAE)
- schrammi, Philine schrammi Malaquias, Ohnheiser, Oskars & Willassen, 2016 - (PHILINIDAE)
- schrammi, Elysia schrammi O.A.L. Mörch, 1863 - syn of: Elysia crispata O.A.L. Mörch, 1863 - (PLAKOBRANCHIDAE)
- schrammi, Biomphalaria schrammi (J.C.H. Crosse, 1864) - (PLANORBIDAE)
- Schrammia, syn of: Subgenus Alcadia (Idesa) H. Adams & A. Adams, 1856 (HELICINIDAE)
- schrammii, Fissurella schrammii P. Fischer, 1857 - (FISSURELLIDAE)
- schrammii, Tornus schrammii (P. Fischer, 1857) - (TORNIDAE)
- schrammii, Cyclostremiscus schrammii P. Fischer, 1857 - syn of: Tornus schrammii (P. Fischer, 1857) - (TORNIDAE)
- Schreinbachites, Genus Schreinbachites Bloos , 1994 † (ARIETITIDAE) (FOSSIL)
- schrencki, Fruticicola schrencki (A.T. von Middendorff, 1851) - (BRADYBAENIDAE)
- schrencki, Mopalia schrencki K.H.J. Thiele, 1909 - (MOPALIIDAE)
- schrencki, Choanomphalus schrencki W. Dybowski, 1875 - (PLANORBIDAE)
- schrencki, Bankia schrencki C.E. von Moll, 1935 - syn of: Bankia gouldi (P. Bartsch, 1908) - (TEREDINIDAE)
- schrencki, Unio schrencki C.A. Westerlund, 1897 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- schrencki, Anodonta schrencki I.M. Moskvicheva, 1973 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- schrenckii, Acmaea schrenckii C.E. Lischke, 1868 - syn of: Nipponacmea schrenckii (C.E. Lischke, 1868) - (ACMAEIDAE)
- schrenckii, Buccinum polare schrenckii T.A. Verkrüzen, 1882 - (BUCCINIDAE)
- schrenckii, Helix schrenckii A.T. von Middendorff, 1851 - syn of: Fruticicola schrencki (A.T. von Middendorff, 1851) - (HELICIDAE)
- schrenckii, Nipponacmea schrenckii (C.E. Lischke, 1868) - (LOTTIIDAE)
- schrenckii, Notoacmea schrenckii C.E. Lischke, 1868 - syn of: Nipponacmea schrenckii (C.E. Lischke, 1868) - (LOTTIIDAE)
- schrenki, Chrysodomus schrenki M. Yokoyama, 1920 - syn of: Japelion adelphicus (W.H. Dall, 1907) - (BUCCINIDAE)
- schrenki, Olenekoceras schrenki (Mojsisovics, 1886 †) - (SIBIRITIDAE) (FOSSIL)
- schrenkianus, Unio schrenkianus S. Clessin, 1880 - syn of: Unio pictorum rostratus J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- schrenkii, Bradybaena schrenkii (A.T. von Middendorff, 1851) - (BRADYBAENIDAE)
- schrenkii, Choanomphalus schrenkii W. Dybowski, 1875 - (PLANORBIDAE)
- schrenkii, Unio schrenkii I. Lea, 1870 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- schréteri, Chlamys schréteri J. Noszky, 1936 † - (PECTINIDAE) (FOSSIL)
- Schreyerites, Genus Schreyerites Tatzreiter & Balini, 1993 † (BEYRICHITIDAE) (FOSSIL)
- schrickeli, Simicheiloceras schrickeli Becker, 1993 † - (TORNOCERATIDAE) (FOSSIL)
- schrieli, Aspidotheca schrieli Dahmer, 1936 † - (PTEROTHECIDAE) (FOSSIL)
- schrimptoni, Glycymeris schrimptoni J. Marwick, 1923 † - (GLYCYMERIDIDAE) (FOSSIL)
- schroeckingeri, Chelyconus schroeckingeri Hoernes & Auinger, 1879 † - (CONIDAE) (FOSSIL)
- schroeckingeri, Nassarius schroeckingeri (R. Hoernes & Aulinger, 1882 †) - (NASSARIIDAE) (FOSSIL)
- schroeckingeri, Europrotomus schroeckingeri (R. Hoernes, 1884 †) - (STROMBIDAE) (FOSSIL)
- schroederi, Calliostoma schroederi W.J. Clench & C.G. Aguayo, 1938 - (CALLIOSTOMATIDAE)
- schroederi, Cerodrillia schroederi P. Bartsch & H.A. Rehder, 1939 - (DRILLIIDAE)
- schroederi, Cimomia schroederi Wiedmann, 1960 † - (HERCOGLOSSIDAE) (FOSSIL)
- schroederi, Harpoceras schroederi Denckmann, 1893 † - syn of: Tiltoniceras antiquum (Wright, 1882 †) - (HILDOCERATIDAE) (FOSSIL)
- schroederi, Aspella schroederi R. Houart, 1996 - (MURICIDAE)
- schroederi, Nassarius schroederi (F. Kautsky, 1925 †) - (NASSARIIDAE) (FOSSIL)
- schroederi, Anodomaria schroederi Monari & al., 2011 † - (PLEUROTOMARIIDAE) (FOSSIL)
- schroederi, Turbolidium schroederi (G.G. Wissema, 1947 †) - (PYRAMIDELLIDAE) (FOSSIL)
- schroederi, Buvignieria schroederi A. Kaim, 2004 † - (RISSOINIDAE) (FOSSIL)
- schroederi, Labiostrombus schroederi (G.G. Wissema, 1947 †) - (STROMBIDAE) (FOSSIL)
- schroederi, Ampezzogyra schroederi K. Bandel, 1996 † - (STUORAXIDAE) (FOSSIL)
- schroederi, Usedomella schroederi Grundel, 1998 † - (TOFANELLIDAE) (FOSSIL)
- schroederi, Costactaeon schroederi Grundel, 1997 † - (TUBIFERIDAE) (FOSSIL)
- schroederi, Anodonta schroederi R. Schröder, 1885 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- schroederi, Unio schroederi J.R. Bourguignat, 1885 - syn of: Unio tumidus A. Retzius, 1788 - (UNIONIDAE)
- Schroederilda, Genus Schroederilda Bandel, 1995 (MATHILDIDAE) (FOSSIL)
- Schroederium, Genus Schroederium Kowalke, 1998 † (CERITHIIDAE) (FOSSIL)
- Schroederoceras, Genus Schroederoceras Hyatt, 1894 † (TROCHOLITIDAE) (FOSSIL)
- schroedli, Berthella schroedli J.F. Araya & Valdés, 2016 - (PLEUROBRANCHIDAE)
- schroeteri, Bulla schroeteri R.A. Philippi, 1844 - syn of: Philine aperta (C. Linnaeus, 1767) - (BULLIDAE)
- schroeteri, Cerithium caeruleum schroeteri (O.A.L. Mörch, 1852) - (CERITHIIDAE)
- schroeteri, Mitra schroeteri J.H.F. Link, 1807 - (MITRIDAE)
- schroeteri, Philine schroeteri R.A. Philippi, 1844 - syn of: Philine quadripartita P. Ascanius, 1772 - (PHILINIDAE)
- schroeteri, Voluta schroeteri J.H.F. Link, 1807 - syn of: Mitra cornicula (C. Linnaeus, 1758) - (VOLUTIDAE)
- schroeteri, Xenophora umbilicaris schroeteri (J.F. Gmelin, 1791) - (XENOPHORIDAE)
- Schroeteria, syn of: Genus Diplothyra G.W. Tryon, 1862 (PHOLADIDAE)
- schroeteriana, Helix schroeteriana L. Pfeiffer, 1845 - syn of: Pleurodonte tridentina (A.E.J. Férussac in L. Pfeiffer, 1842) - (HELICIDAE)
- schroeteriana, Anodonta schroeteriana I. Lea, 1852 - syn of: Anodontites elongata (W.J. Swainson, 1823) - (UNIONIDAE)
- schroeterius, Gibbula schroeterius A. Risso, 1826 - syn of: Clanculus jussieui (B.C.M. Payraudeau, 1826) - (TROCHIDAE)
- schrolli, Lepetodrilus schrolli L.A. Beck, 1993 - (LEPETODRILIDAE)
- schroteri, Cerithium schroteri O.A.L. Mörch, 1852 - syn of: Cerithium caeruleum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- schroteri, Rhinoclavis schroteri O.A.L. Mörch, 1852 - syn of: Cerithium caeruleum G.B. II Sowerby, 1855 - (CERITHIIDAE)
- schtrocki, Archicypraea schtrocki Dolin & Aguerre, 2016 † - (CYPRAEIDAE) (FOSSIL)
- schubarti, Drepanotrema schubarti (F. Haas, 1938) - (PLANORBIDAE)
- schubelae, Rissoina schubelae W.J. Sleurs & R.C. Preece, 1994 - (RISSOINIDAE)
- schuberti, Metafruticicola schuberti (J.R. Roth, 1839) - (HYGROMIIDAE)
- schuberti, Adrana schuberti F. Lange de Morretes, 1940 - syn of: Adrana patagonica (A.V.M.D. D'Orbigny, 1845) - (NUCULANIDAE)
- schubinae, Lymnaea schubinae N.D. Kruglov & Y.I. Starobogatov, 1984 - (LYMNAEIDAE)
- schubotzi, Zonitarion schubotzi K.H.J. Thiele, 1919 - (UROCYCLIDAE)
- schucherti, Pyruclia schucherti A.A. Olsson, 1932 † - (CANCELLARIIDAE) (FOSSIL)
- schucherti, Conoclisa schucherti (J. Perner, 1903 †) - (CLISOSPIRIDAE) (FOSSIL)
- schucherti, Timorites schucherti Miller & Furnish, 1940 † - (CYCLOLOBIDAE) (FOSSIL)
- schucherti, Cyrtogomphoceras schucherti Flower, 1952 † - (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- schucherti, Acanthohoplites schucherti Stoyanow, 1949 † - (DESHAYESITIDAE) (FOSSIL)
- schucherti, Klamathites schucherti Smith, 1927 † - (KLAMATHITIDAE) (FOSSIL)
- schucherti, Uddenites schucherti Böse, 1919 † - (MEDLICOTTIIDAE) (FOSSIL)
- schucherti, Metalegoceras schucherti (Miller & Furnish, 1940 †) - (METALEGOCERATIDAE) (FOSSIL)
- schucherti, Orthodesma schucherti Ulrich, 1894 † - (MODIOMORPHIDAE) (FOSSIL)
- schucherti, Metaperrinites schucherti (Toumanskaya, 1949 †) - (PERRINITIDAE) (FOSSIL)
- schucherti, Pseudozygopleura schucherti Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- schucherti, Fusispira schucherti Ulrich & Scofield, 1897 † - (SUBULITIDAE) (FOSSIL)
- Schuchertoceras, Genus Schuchertoceras Miller, 1932 † (ASCOCERATIDAE) (FOSSIL)
- schuchii, Albinaria schuchii (E.A. Rossmässler, 1836) - (CLAUSILIIDAE)
- schuchii liebetruti, Albinaria schuchii liebetruti (J.G.F. de Charpentier, 1852) - (CLAUSILIIDAE)
- schuchii olympica, Albinaria schuchii olympica H. Nordsieck, 1974 - (CLAUSILIIDAE)
- schuchii oscarii, Albinaria schuchii oscarii (O. Böttger, 1883) - (CLAUSILIIDAE)
- schuchii samiensis, Albinaria schuchii samiensis T.C.M. Kemperman & E. Gittenberger, 1992 - (CLAUSILIIDAE)
- schuebelbergensis, Paranowakia schuebelbergensis Alberti, 1993 † - (PARANOWAKIIDAE) (FOSSIL)
- schuebleri, Granaria schuebleri (Klein, 1846) † - (CHONDRINIDAE) (FOSSIL)
- schuelei, Milesiana schuelei (H.D. Boeters, 1981) - (HYDROBIIDAE)
- Schuettemmericia, Genus Schuettemmericia Schlickum, 1961 † (HYDROBIIDAE) (FOSSIL)
- schuetti, Bithynia schuetti W.R. Schlickum & F. Strauch, 1974 † - (BITHYNIIDAE) (FOSSIL)
- schuetti, Carinigera schuetti (R.A.M. Brandt, 1962) - (CLAUSILIIDAE)
- schuetti, Carinigera schuetti H. Nordsieck, 1984 - (CLAUSILIIDAE)
- schuetti, Plioptychia schuetti Schnabel, 2006 † - syn of: Triptychia vulgata (A.E. Reuss in A.E. Reuss & Meyer, 1849 †) - (CLAUSILIIDAE) (FOSSIL)
- schuetti, Medora dalmatina schuetti H. Nordsieck, 1970 - (CLAUSILIIDAE)
- schuetti, Isaurica schuetti P. Subai, 1994 - (HELICIDAE)
- schuetti, Falsipyrgula schuetti M.Z. Yildirim, 1999 - (HYDROBIIDAE)
- schuetti, Nematurella schuetti W.R. Schlickum, 1960 † - syn of: Nematurella bavarica (C.L.F. von Sandberger, 1875 †) - (HYDROBIIDAE) (FOSSIL)
- schuetti, Hubendickia schuetti (R.A.M. Brandt, 1968) - syn of: Stenothyra schuetti (R.A.M. Brandt, 1968) - (POMATIOPSIDAE)
- schuetti, Vitrea schuetti I. Pintér, 1972 - (PRISTILOMATIDAE)
- schuetti, Stenothyra schuetti (R.A.M. Brandt, 1968) - (STENOTHYRIDAE)
- schuetti, Testacella schuetti W.R. Schlickum, 1967 † - (TESTACELLIDAE) (FOSSIL)
- schuetti costulifera, Carinigera schuetti costulifera H. Nordsieck, 1984 - (CLAUSILIIDAE)
- schuetti limbrunneri, Carinigera schuetti limbrunneri H. Nordsieck, 1990 - (CLAUSILIIDAE)
- schuetti montana, Carinigera schuetti montana H. Nordsieck, 1993 - (CLAUSILIIDAE)
- schuetti regularis, Carinigera schuetti regularis H. Nordsieck, 1993 - (CLAUSILIIDAE)
- schuetti serresensis, Carinigera schuetti serresensis (H. Nordsieck, 2015) - (CLAUSILIIDAE)
- Schuichengoceras, Genus Schuichengoceras † (GONIATITIDA (UNASSIGNED)) (FOSSIL)
- schulberti, Teretrina schulberti A. Nützel & Erwin, 2004 † - (MATHILDIDAE) (FOSSIL)
- schulgae, Steklovidiscus schulgae (Gozhik & Prysjazhnjuk, 1978 †) - (PLANORBIDAE) (FOSSIL)
- schulginae, Borealites schulginae Igolnikov, 2014 † - (POLYPTYCHITIDAE) (FOSSIL)
- schultesi, Cretica sublamellosa schultesi V. Wiese, 1988 - (CLAUSILIIDAE)
- schultzeanus, Solen schultzeanus R.W. Dunker, 1850 - (SOLENIDAE)
- schultzei, Eledone schultzei (W.E. Hoyle, 1910) - (OCTOPODIDAE)
- schultzei, Aphrodoctopus schultzei W.E. Hoyle, 1910 - syn of: Eledone schultzei (W.E. Hoyle, 1910) - (OCTOPODIDAE)
- schultzei, Alpinites schultzei Becker, 2002 † - (POSTTORNOCERATIDAE) (FOSSIL)
- schultzei, Macoma schultzei K.H.J. Thiele, 1910 - (TELLINIDAE)
- schultzi, Pseudidyla schultzi Binder, 2004 † - (CLAUSILIIDAE) (FOSSIL)
- schultzi, Triptychia schultzi Lueger, 1981 † - (FILHOLIIDAE) (FOSSIL)
- schultzi, Theodoxus schultzi (O.A. Grimm, 1877) - (NERITIDAE)
- schultzi, Aphrodoctopus schultzi W.E. Hoyle, 1910 - syn of: Eledone schultzei (W.E. Hoyle, 1910) - (OCTOPODIDAE)
- schultzi, Pseudovermis schultzi Er. Marcus & Ev. Marcus, 1955 - (PSEUDOVERMIDAE)
- schultziana, Hypselodoris schultziana S. Delle Chiaje, 1841 - syn of: Felimare villafranca (A. Risso, 1818) - (CHROMODORIDIDAE)
- schultzii, Hypselodoris schultzii S. Delle Chiaje, 1841 - syn of: Felimare villafranca (A. Risso, 1818) - (CHROMODORIDIDAE)
- schultzii, Doris schultzii S. Delle Chiaje, 1841 - syn of: Felimare villafranca (A. Risso, 1818) - (DORIDIDAE)
- schultzii, Epitonium schultzii H.C. Weinkauff, 1868 - syn of: Epitonium algerianum (H.C. Weinkauff, 1866) - (EPITONIIDAE)
- schulzei, Limax schulzei U. Gerhardt, 1941 - syn of: Limax cinereoniger J. Wolf in T. Sturm, 1803 - (LIMACIDAE)
- schulzei, Irinoceras schulzei Kullmann, 1963 † - (PRIONOCERATIDAE) (FOSSIL)
- schulzeriana, Emmericia schulzeriana Š. Brusina, 1897 † - (AMNICOLIDAE) (FOSSIL)
- schulzi, Deroceras schulzi Y. Tzvetkov & Matyokin, 1946 - syn of: Deroceras laeve (O.F. Müller, 1774) - (AGRIOLIMACIDAE)
- schulzi, Ceratobeloceras schulzi House & Kirchgasser, 1985 † - syn of: Beloceras tenuistriatum (d'Archiac & de Verneuil, 1842 †) - (BELOCERATIDAE) (FOSSIL)
- Schumacheria, syn of: Genus Psammotreta W.H. Dall, 1900 (TELLINIDAE)
- schumacheriana, Hemiplecta schumacheriana (L. Pfeiffer) - (ARIOPHANTIDAE)
- schumoi, Pachychilus schumoi H.A. Pilsbry, 1931 - (PACHYCHILIDAE)
- schumoi, Solariorbis schumoi (E.G. Vanatta, 1913) - (TORNIDAE)
- schumoi, Anticlimax schumoi (E.G. Vanatta, 1913) - (TORNIDAE)
- schumoi, Teinostoma schumoi E.G. Vanatta, 1913 - syn of: Solariorbis schumoi (E.G. Vanatta, 1913) - (TORNIDAE)
- schunkei, Drymaeus schunkei F. Haas, 1949 - (BULIMULIDAE)
- schunkei, Aperostoma schunkei F. Haas, 1955 - (NEOCYCLOTIDAE)
- schuppi, Ptychodon schuppi (H.H. Suter, 1900) - (CHAROPIDAE)
- schuppi, Cylindrobulla schuppi Laetz, Christa, K. Händeler & H. Wägele, 2014 - (CYLINDROBULLIDAE)
- schuppi, Doryssa schuppi (H.F.A. von Ihering, 1902) - (PACHYCHILIDAE)
- schuppi, Pyramidula schuppi H.H. Suter, 1900 - (PYRAMIDULIDAE)
- schupporum, Phyllidia schupporum A. Fahrner & M. Schrödl, 2000 - (PHYLLIDIIDAE)
- schuschaensis, Akramowskia schuschaensis W. Kobelt, 1902 - syn of: Akramovskiella schuschaensis (W. Kobelt, 1902) - (CLAUSILIIDAE)
- schuschaensis, Akramovskiella schuschaensis (W. Kobelt, 1902) - (ENIDAE)
- schusteri, Nautilus schusteri von Loesch, 1912 † - syn of: Paracenoceras schusteri (von Loesch, 1912 †) - (NAUTILIDAE) (FOSSIL)
- schusteri, Paracenoceras schusteri (von Loesch, 1912 †) - (PARACENOCERATIDAE) (FOSSIL)
- Schuttiella, Subgenus Paludinella (Schuttiella) R.A.M. Brandt, 1974 † (ASSIMINEIDAE) (FOSSIL)
- schwabei, Leptochiton schwabei J.D. Sigwart & B.I. Sirenko, 2012 - (LEPTOCHITONIDAE)
- schwabenaui, Goniochilus schwabenaui (A. Fuchs, 1870 †) - (HYDROBIIDAE) (FOSSIL)
- schwabi, Clausilia schwabi A. Schmidt, 1856 - syn of: Pyrostoma borealis (O. Böttger, 1878) - (CLAUSILIIDAE)
- schwabi, Galatea schwabi (W.J. Clench, 1929) - (DONACIDAE)
- schwabi, Limax schwabi G.R. von Frauenfeld, 1864 - syn of: Bielzia coerulans (E.A. Bielz, 1851) - (LIMACIDAE)
- schwabii, Bithynia schwabii G.R. von Frauenfeld, 1865 - (BITHYNIIDAE)
- schwageri, Serrulella schwageri (O. Böttger, 1877 †) - (CLAUSILIIDAE) (FOSSIL)
- schwageri, Serrulina schwageri O. Böttger, 1877 † - syn of: Serrulella schwageri (O. Böttger, 1877 †) - (CLAUSILIIDAE) (FOSSIL)
- schwageri, Carychiopsis schwageri (A.E. Reuss, 1868 †) - (ELLOBIIDAE) (FOSSIL)
- schwageri hochheimensis, Carychiopsis schwageri hochheimensis W.A. Wenz, 1923 † - (ELLOBIIDAE) (FOSSIL)
- schwalmi, Ophionautilus schwalmi Prinz, 1906 † - (CENOCERATIDAE) (FOSSIL)
- Schwammeria, Genus Schwammeria Schileyko, 2010 (ARIOPHANTIDAE)
- schwandorfense, Holzbergia schwandorfense (Arkel, 1951 †) - (TULITIDAE) (FOSSIL)
- Schwandorfia, Genus Schwandorfia † (TULITIDAE) (FOSSIL)
- schwaneri, Paraphaedusa schwaneri (E.C. Von Martens, 1867) - (CLAUSILIIDAE)
- schwanitschi, Entocolax schwanitschi S.G. Heding in S.G. Heding & G. Mandahl-Barth, 1938 - (EULIMIDAE)
- Schwardtina, Genus Schwardtina Bandel & Riedel, 1994 (NERITIDAE) (FOSSIL)
- Schwardtopsis, Genus Schwardtopsis Bandel, 2007 † (DELPHINULOPSIDAE) (FOSSIL)
- schwartii, Chondropoma erectum schwartii M.L. Jaume, 1984 - (POMATIIDAE)
- schwartzi, Fusinus schwartzi R. Hoernes † - (FASCIOLARIIDAE) (FOSSIL)
- schwartzi, Prososthenia schwartzi M. von Neumayr, 1869 † - (HYDROBIIDAE) (FOSSIL)
- schwartzi, Stenothyrella schwartzi (G.R. von Frauenfeld in M. Hörnes, 1856 †) - (STENOTHYRIDAE) (FOSSIL)
- schwartzi, Notocallista schwartzi (Newton) † - (VENERIDAE) (FOSSIL)
- schwartzi, Zebina schwartzi G.P. Deshayes, 1861 † - (ZEBINIDAE) (FOSSIL)
- Schwartzia, syn of: Genus Rissoa M. Freminville in A.G. Desmarest, 1814 (RISSOIDAE)
- schwartziana, Caracolus marginella schwartziana (L. Pfeiffer, 1864) - (PLEURODONTIDAE)
- schwartziana, Alvania schwartziana Š. Brusina, 1866 - (RISSOIDAE)
- schwartzianum, Tritonium schwartzianum J.C.H. Crosse, 1861 - syn of: Pareuthria fuscata (J.G. Bruguière, 1789) - (BUCCINIDAE)
- schwartzianus, Caracolus schwartzianus (L. Pfeiffer, 1864) - (PLEURODONTIDAE)
- Schwartziella, Genus Schwartziella G. Nevill, 1881 (ZEBINIDAE)
- schwarzenbergi, Natica schwarzenbergi Klipstein, 1843 † - (NATICIDAE) (FOSSIL)
- schwarzi, Tanzanitrigonia schwarzi (G. Müller, 1900) † - (RUTITRIGONIIDAE) (FOSSIL)
- schwarzii, Unio schwarzii W. Kobelt, 1915 - syn of: Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- schwarzkopfi, Nehdenites schwarzkopfi (Becker, 1993 †) - (CHEILOCERATIDAE) (FOSSIL)
- Schwegleria, Genus Schwegleria Riegraf , 1980 † (PASSALOTEUTHIDIDAE) (FOSSIL)
- schweigeri, Euxinolauria schweigeri (K. Götting, 1963) - (LAURIIDAE)
- schweiggeri, Leiostyla schweiggeri K. Götting, 1963 - (LAURIIDAE)
- schweinfurthi, Achatina schweinfurthi E.C. Von Martens, 1873 - (ACHATINIDAE)
- schweinfurthi, Gabbiella schweinfurthi (C.F. Jickeli, 1874) - (BITHYNIIDAE)
- schweinfurthi, Schedocardia schweinfurthi (Mayer-Eymar 1883) † - (CARDIIDAE) (FOSSIL)
- schweinfurthi, Sabaeola schweinfurthi (E.C. Von Martens, 1889) - (CLAUSILIIDAE)
- schweinfurthi, Corbicula schweinfurthi P.M. Pallary, 1909 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- schweinfurthi, Neolobites schweinfurthi Eck, 1914 † - syn of: Neolobites vibrayeanus brancai Eck, 1908 † - (ENGONOCERATIDAE) (FOSSIL)
- schweinfurthi, Mya schweinfurthi Mayer-Eymar, 1887 † - (MYIDAE) (FOSSIL)
- schweinfurthi, Pereiraea schweinfurthi P. Oppenheim, 1906 † - (PEREIRAEIDAE) (FOSSIL)
- schweinfurthi, Raetomya schweinfurthi (Mayer-Eymar, 1887 †) - (RAETOMYIDAE) (FOSSIL)
- schweinfurthi foureaui, Achatina schweinfurthi foureaui J. Germain, 1905 - (ACHATINIDAE)
- schweinfurthi hartmanni, Achatina schweinfurthi hartmanni E.C. Von Martens, 1865 - syn of: Achatina schweinfurthi hautmanni E.C. Von Martens, 1865 - (ACHATINIDAE)
- schweinfurthi hautmanni, Achatina schweinfurthi hautmanni E.C. Von Martens, 1865 - (ACHATINIDAE)
- schweinfurthi semifusca, Achatina schweinfurthi semifusca G.C. Spence, 1923 - (ACHATINIDAE)
- schweinfurthi simulans, Achatina schweinfurthi simulans T.E. Crowley & T. Pain - (ACHATINIDAE)
- schwelmensis, Gephyroceras schwelmensis Paeckelmann, 1922 † - syn of: Mzerrebites schwelmensis (Paeckelmann, 1922 †) - (GEPHUROCERATIDAE) (FOSSIL)
- schwelmensis, Retispira schwelmensis Heidelberger & Koch, 2005 † - (KNIGHTITIDAE) (FOSSIL)
- schwelmensis, Liotia schwelmensis Kayser, 1878 † - syn of: Devononerita schwelmensis (Kayser, 1878 †) - (LIOTIIDAE) (FOSSIL)
- schwelmensis, Devononerita schwelmensis (Kayser, 1878 †) - (NERITOPSIDAE) (FOSSIL)
- schwelmensis, Strothia schwelmensis (Kayser, 1878 †) - (NERITOPSIDAE) (FOSSIL)
- schwelmensis, Mzerrebites schwelmensis (Paeckelmann, 1922 †) - (TAOUZITIDAE) (FOSSIL)
- schwelmensis, Rhenania schwelmensis (eushausen 1895) † - (TRIGONIIDA (UNASSIGNED)) (FOSSIL)
- schwelmensis, Turbo schwelmensis Kayser, 1878 † - syn of: Devononerita schwelmensis (Kayser, 1878 †) - (TURBINIDAE) (FOSSIL)
- schwenfurthi, Paracerastus schwenfurthi (E.R. Sykes, 1903) - (CERASTUIDAE)
- schwengelae, Turveria schwengelae (P. Bartsch, 1938) - (EULIMIDAE)
- Schwengelia, syn of: Genus Aclis S.L. Lovén, 1846 (ACLIDIDAE)
- schwertschlageri, Nautilus schwertschlageri von Loesch, 1914 † - syn of: Pseudaganides schwertschlageri (von Loesch, 1914 †) - (NAUTILIDAE) (FOSSIL)
- schwertschlageri, Pseudaganides schwertschlageri (von Loesch, 1914 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- schwerzenbachi, Unio schwerzenbachi J.R. Bourguignat, 1856 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- schwerzenbachii, Galeata schwerzenbachii (L. Pfeiffer, 1848) - (CLAUSILIIDAE)
- schwetzowi, Duvalia schwetzowi (Keleptrishvili, 1999 †) - (DUVALIIDAE) (FOSSIL)
- schwobi, Facelina schwobi (A. Labbé, 1923) - (FACELINIDAE)
- schypaensis, Subzebrinus schypaensis (R. Sturany, 1900) - (ENIDAE)
- schythei, Admete schythei (R.A. Philippi, 1855) - (CANCELLARIIDAE)
- schythei, Onoba schythei (R.A. Philippi, 1868) - (RISSOIDAE)
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