- shohakuensis, Liospira shohakuensis Kobayashi, 1934 † - (EOTOMARIIDAE) (FOSSIL)
- shoichiroi, Natica shoichiroi J.T. Kuroda, 1961 - (NATICIDAE)
- shojii, Siphonalia shojii K. Hirayama, 1956 † - (BUCCINIDAE) (FOSSIL)
- shokawensis, Thracia shokawensis I. Hayami, 1959 - (THRACIIDAE)
- shokoriense, Ophiletina shokoriense O. Kobayashi, 1930 † - (HELICOTOMIDAE) (FOSSIL)
- sholakense, Gzheloceras sholakense Ruzhentsev & Shimanskiy, 1954 † - (GZHELOCERATIDAE) (FOSSIL)
- sholakense, Subitoceras sholakense Ruzhencev & Bogoslovskaya, 1978 † - (STENOGLAPHYRITIDAE) (FOSSIL)
- sholakensis, Glyphiolobus sholakensis Ruzhencev & Bogoslovskaya, 1978 † - (DIMORPHOCERATIDAE) (FOSSIL)
- sholakensis, Syngastrioceras sholakensis Ruzhentsev & Bogoslovskaya, 1971 † - (GLAPHYRITIDAE) (FOSSIL)
- sholakensis, Somoholites sholakensis Ruzhentsev, 1950 † - (SOMOHOLITIDAE) (FOSSIL)
- Sholakoceras, Genus Sholakoceras Ruzhentsev & Shimanskiy, 1954 (RHIPHAEOCERATIDAE) (FOSSIL)
- sholverense, Pseudocatastroboceras sholverense H. Turner, 1965 † - syn of: Stroboceras humerosum A. Schmidt, 1951 † - (NAUTILIDA (unassigned)) (FOSSIL)
- shongii, Placostylus shongii (R.P. Lesson, 1830) - (BOTHRIEMBRYONTIDAE)
- shoplandi, Pusia shoplandi J.C. Melvill, 1895 - syn of: Pusia depexum (G.P. Deshayes in E.S.J.L. de Laborde & M. Linant, 1834) - (COSTELLARIIDAE)
- shoplandi, Gibberula shoplandi J.C. Melvill, 1897 - (CYSTISCIDAE)
- shoplandi, Fissidentalium shoplandi (F.P. Jousseaume, 1894) - (DENTALIIDAE)
- shoplandi, Parvioris shoplandi (J.C. Melvill, 1898) - (EULIMIDAE)
- shoplandi, Semele shoplandi J.C. Melvill, 1898 - syn of: Semele cordiformis (H.S. Holten, 1802) - (SEMELIDAE)
- shorehami, Cystiscus shorehami G.B. Pritchard & J.H. Gatliff, 1899 - syn of: Cystiscus angasi (J.C.H. Crosse, 1870) - (CYSTISCIDAE)
- shorehami, Marginella shorehami G.B. Pritchard & J.H. Gatliff, 1899 - syn of: Cystiscus angasi (J.C.H. Crosse, 1870) - (MARGINELLIDAE)
- shorehami, Tectonatica shorehami (G.B. Pritchard & J.H. Gatliff, 1900) - (NATICIDAE)
- shorehami, Natica shorehami G.B. Pritchard & J.H. Gatliff, 1900 - syn of: Tectonatica shorehami (G.B. Pritchard & J.H. Gatliff, 1900) - (NATICIDAE)
- shorinense, Coreanoceras shorinense T. Kobayashi, 1931 † - (MANCHUROCERATIDAE) (FOSSIL)
- shornikovi, Ammonicera shornikovi A. Chernyshev, 2003 - (OMALOGYRIDAE)
- shorrocksi, Girtyoceras shorrocksi Moore, 1946 † - (GIRTYOCERATIDAE) (FOSSIL)
- shoshonense, Pseudaetomoceras shoshonense Taylor, 1998 † - (ARIETITIDAE) (FOSSIL)
- shoshonense, Mortoniceras shoshonense d'Orbigny, 1850 † - syn of: Protexanites bourgeoisianus (A.V.M.D. D'Orbigny, 1850 †) - (BRANCOCERATIDAE) (FOSSIL)
- shoshonensis, Balatonites shoshonensis A. Hyatt & Smith, 1905 † - (BALATONITIDAE) (FOSSIL)
- shoshonensis, Choristoceras shoshonensis Taylor & Guex, 2002 † - (CHORISTOCERATIDAE) (FOSSIL)
- shostakovichi, Hemistomia shostakovichi M. Haase & P. Bouchet, 1998 - (TATEIDAE)
- shouchangense, Daubichites shouchangense (Chao, 1962 †) - (PARAGASTRIOCERATIDAE) (FOSSIL)
- shouchangense, Shouchangoceras shouchangense J.K. Zhao & Zheng, 1977 † - (PSEUDOHALORITIDAE) (FOSSIL)
- shouchangensis, Nakamuranaia shouchangensis X.T. Ma, 1980 † - (NAKAMURANAIADIDAE) (FOSSIL)
- shouchangensis, Streblochondria shouchangensis Ku & C. Chen, 1963 † - (STREBLOCHONDRIIDAE) (FOSSIL)
- Shouchangoceras, Genus Shouchangoceras Zhao & Zheng, 1977 (PSEUDOHALORITIDAE) (FOSSIL)
- shoukrii, Hippochrenes shoukrii Abbass, 1967 † - (ROSTELLARIIDAE) (FOSSIL)
- shoutedeni, Hydrobia shoutedeni J.C. Bequaert & W.J. Clench, 1936 - (HYDROBIIDAE)
- shouxianensis, Hujiagouella shouxianensis W.C. Zhou & Q. Xiao, 1984 † - (HELCIONELLIDAE) (FOSSIL)
- showalteri, Lepyrium showalteri (I. Lea, 1861) - (LITHOGLYPHIDAE)
- showalteri, Elimia showalteri I. Lea, 1862 - (PLEUROCERIDAE)
- showalteri, Pleurobema showalteri I. Lea, 1860 - syn of: Pleurobema hartmanianum (I. Lea, 1860) - (UNIONIDAE)
- showalterii, Anculosa showalterii I. Lea, 1862 - syn of: Elimia showalteri I. Lea, 1862 - (PLEUROCERIDAE)
- showalterii, Anodonta showalterii I. Lea, 1860 - syn of: Anodontoides radiatus (T.A. Conrad, 1834) - (UNIONIDAE)
- shreevei, Capulus shreevei T.A. Conrad, 1869 - syn of: Cyrtopleura costata (C. Linnaeus, 1758) - (CAPULIDAE)
- shrevei, Cerion shrevei W.J. Clench & C.G. Aguayo, 1952 - (CERIONIDAE)
- shrimptoni, Glycymeris shrimptoni J. Marwick, 1923 † - (GLYCYMERIDIDAE) (FOSSIL)
- shriveri, Orthotheca shriveri Malinky, 2009 † - (CIRCOTHECIDAE) (FOSSIL)
- shuangfengensis, Permophorus shuangfengensis Zhang, 1977 † - (KALENTERIDAE) (FOSSIL)
- shuanghuensis, Leviconcha shuanghuensis C. Chen, 1982 † - (MYOPHORIIDAE) (FOSSIL)
- shuangjingziensis, Lepetopsis shuangjingziensis Liang, 1980 † - (LEPETOPSIDAE) (FOSSIL)
- shuangputangense, Propinacoceras shuangputangense Liang, 1981 † - (MEDLICOTTIIDAE) (FOSSIL)
- shuangyangense, Stacheoceras shuangyangense Liang, 1982 † - (NEOSTACHEOCERATIDAE) (FOSSIL)
- Shuangyangites, syn of: Genus Metaperrinites Ruzhencev , 1950 (PERRINITIDAE) (FOSSIL)
- shubutensis, Galeodea shubutensis (T.H. Aldrich, 1885 †) - (CASSIDAE) (FOSSIL)
- shuichengensis, Stenopronorites shuichengensis Yin, 1935 † - (PRONORITIDAE) (FOSSIL)
- shuishi, Luteuthis shuishi B.J. O'Shea & C.C. Lu, 2002 - (OPISTHOTEUTHIDAE)
- shulapsensis, Mytilus shulapsensis McLearn, 1942 † - (MYTILIDAE) (FOSSIL)
- shultzii, Epitonium shultzii H.C. Weinkauff, 1868 - syn of: Epitonium algerianum (H.C. Weinkauff, 1866) - (EPITONIIDAE)
- shumardana, Nuculopsis shumardana (J.W. Hall, 1856 †) - (NUCULIDAE) (FOSSIL)
- shumardensis, Nuculopsis shumardensis (J.W. Hall, 1856 †) - (NUCULIDAE) (FOSSIL)
- shumardi, Naticopsis shumardi (McChesney, 1859 †) - (DELPHINULOPSIDAE) (FOSSIL)
- shumardi, Gonyodiscus shumardi Mathews, 1929 † - syn of: Hemiprionites typus (L. Waagen, 1895 †) - (DISCIDAE) (FOSSIL)
- shumardi, Geisonoceras shumardi (Billings, 1859 †) - (GEISONOCERATIDAE) (FOSSIL)
- shumardi, Glossus shumardi L.W. Stephenson, 1941 † - (GLOSSIDAE) (FOSSIL)
- shumardi, Euconospira shumardi F.B. Meek & A.H. Worthen, 1860 † - syn of: Euconospira elegantula (J.W. Hall, 1856 †) - (GOSSELETINIDAE) (FOSSIL)
- shumardi, Harpagodes shumardi (J. Hill, 1889 †) - (HARPAGODIDAE) (FOSSIL)
- shumardi, Modulus shumardi (De Verneuil) - (MODULIDAE)
- shumardi, Cyrtoceras shumardi A.H. Clarke, 1897 † - (ONCOCERIDA (unassigned)) (FOSSIL)
- shumardi, Sanguinolites shumardi C. Gemmellaro, 1896 † - (SANGUINOLITIDAE) (FOSSIL)
- shumardi, Bendoceras shumardi Shumard, 1863 † - syn of: Paralegoceras texanum (Shumard, 1863 †) - (SCHISTOCERATIDAE) (FOSSIL)
- shumardi, Anisomyon shumardi F.B. Meek & Hayden, 1860 † - (SIPHONARIIDAE) (FOSSIL)
- shumardiana, Murchisonia shumardiana Winchell, 1863 † - syn of: Knightella shumardiana (Winchell, 1863 †) - (MURCHISONIIDAE) (FOSSIL)
- shumardiana, Knightella shumardiana (Winchell, 1863 †) - (ORTHONEMIDAE) (FOSSIL)
- shumardianum, Foordiceras shumardianum Girty, 1909 † - syn of: Pleuronautilus shumardianus Girty, 1909 † - (KONINCKIOCERATIDAE) (FOSSIL)
- shumardianum, Cunitoceras shumardianum (Winchell †) - (PRIONOCERATIDAE) (FOSSIL)
- shumardianus, Goniatites shumardianus Winchell, 1862 † - syn of: Aganides shumardianus (Winchell, 1862 †) - (GONIATITIDAE) (FOSSIL)
- shumardianus, Aganides shumardianus (Winchell, 1862 †) - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- shumardianus, Pleuronautilus shumardianus Girty, 1909 † - (TAINOCERATIDAE) (FOSSIL)
- shumardii, Turbonopsis shumardii (J.W. Hall, 1879 †) - (PALAEOTROCHIDAE) (FOSSIL)
- shumardii, Turbo shumardii J.W. Hall, 1879 † - syn of: Turbonopsis shumardii (J.W. Hall, 1879 †) - (TURBINIDAE) (FOSSIL)
- Shumardites, Genus Shumardites Smith , 1903 (SHUMARDITIDAE) (FOSSIL)
- SHUMARDITIDAE Plummer & Scott, 1937 - Family (CEPHALOPODA-AMMONOIDEA-GONIATITIDA) (FOSSIL)
- Shumardoceras, Genus Shumardoceras Ulrich & Foerste, 1936 (ESTONIOCERATIDAE) (FOSSIL)
- shumwayense, Solenochilus shumwayense Tucker, 1976 † - (SOLENOCHILIDAE) (FOSSIL)
- shupei, Labridens shupei E.L. Yochelson, 1956 † - (SOLENISCIDAE) (FOSSIL)
- shurabense, Systrophoceras shurabense Kisselev, 1996 † - (LECHRITROCHOCERATIDAE) (FOSSIL)
- Shuranoceras, Genus Shuranoceras Barskov, 1959 (KAROCERATIDAE) (FOSSIL)
- shurovensis, Shurovites shurovensis A.V. Guzhov, 2004 † - (CRYPTAULACIDAE) (FOSSIL)
- Shurovites, Genus Shurovites Guzhov , 2004 (CRYPTAULACIDAE) (FOSSIL)
- shurtleffiana, Radiatula shurtleffiana (I. Lea, 1856) - (UNIONIDAE)
- shutcoensis, Parabalea pilsbryi shutcoensis W.K. Weyrauch, 1960 - (CLAUSILIIDAE)
- shutoi, Sundabittium shutoi Scolari, 2001 † - (CERITHIIDAE) (FOSSIL)
- shutoi, Glycymeris shutoi A. Matsukuma, 1981 - (GLYCYMERIDIDAE)
- Shutonia, Genus Shutonia van der Bijl, 1993 (PSEUDOMELATOMIDAE)
- shuttleworthi, Callistoplepa shuttleworthi (L. Pfeiffer, 1856) - (ACHATINIDAE)
- shuttleworthi, Limicolaria felina shuttleworthi A. d'Ailly, 1876 - (ACHATINIDAE)
- shuttleworthi, Bulimus shuttleworthi J.A. Albers, 1854 - syn of: Methorthalicus shuttleworthi (J.A. Albers, 1854) - (BULIMULIDAE)
- shuttleworthi, Tristramia chrysocheila shuttleworthi E.C. Von Martens, 1890 - (HELICINIDAE)
- shuttleworthi, Velesunio shuttleworthi T. Iredale, 1934 - syn of: Velesunio moretonicus (L.A. Reeve, 1865) - (HYRIIDAE)
- shuttleworthi, Methorthalicus shuttleworthi (J.A. Albers, 1854) - (ORTHALICIDAE)
- shuttleworthi, Chondrothyretes shuttleworthi (L. Pfeiffer, 1851) - (POMATIIDAE)
- shuttleworthi, Guestieria shuttleworthi (L. Pfeiffer, 1851) - (SCOLODONTIDAE)
- shuttleworthi, Streptostyla shuttleworthi (L. Pfeiffer, 1856) - (SPIRAXIDAE)
- shuttleworthi, Unio shuttleworthi H.C. Küster, 1856 - syn of: Velesunio moretonicus (L.A. Reeve, 1865) - (UNIONIDAE)
- shuttleworthi atriola, Chondrothyretes shuttleworthi atriola (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi catalinensis, Chondrothyretes shuttleworthi catalinensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi clivicola, Chondrothyretes shuttleworthi clivicola (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi cumbrensis, Chondrothyretes shuttleworthi cumbrensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi incrassatum, Chondrothyretes shuttleworthi incrassatum (B.H. Wright) - (POMATIIDAE)
- shuttleworthi infernalis, Chondrothyretes shuttleworthi infernalis M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- shuttleworthi mameyensis, Chondrothyretes shuttleworthi mameyensis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi perplexa, Chondrothyretes shuttleworthi perplexa (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi portica, Chondrothyretes shuttleworthi portica (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- shuttleworthi torrei, Chondrothyretes shuttleworthi torrei M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- Shuttleworthia, Subgenus Pittieria (Shuttleworthia) F.C. Baker, 1941 (SPIRAXIDAE)
- shuttleworthiana, Leptocola shuttleworthiana L. Pfeiffer, 1856 - syn of: Callistoplepa shuttleworthi (L. Pfeiffer, 1856) - (ACHATINIDAE)
- shuttleworthiana, Fadyenia shuttleworthiana E. Chitty, 1857 - (HELICINIDAE)
- shuttleworthiana, Pupilla shuttleworthiana L. Pfeiffer, 1847 - syn of: Isthmia modesta (T. Say, 1824) - (PUPILLIDAE)
- shuttleworthiana, Pycnoptychia shuttleworthiana (F. Poey, 1856) - (UROCOPTIDAE)
- shuttleworthiana, Vertigo shuttleworthiana L. Pfeiffer, 1847 - syn of: Vertigo alpestris J. Alder, 1838 - (VERTIGINIDAE)
- shuttleworthianus, Callistochiton shuttleworthianus H.A. Pilsbry, 1893 - (CALLISTOPLACIDAE)
- shuttleworthianus, Oxychilus shuttleworthianus (N. Pini, 1884) - (OXYCHILIDAE)
- shuttleworthii, Unio shuttleworthii I. Lea, 1856 - syn of: Alathyria pertexta T. Iredale, 1934 - (UNIONIDAE)
- shuyakensis, Turbonilla shuyakensis P. Bartsch, 1927 - (PYRAMIDELLIDAE)
- Shvetsovia, Genus Shvetsovia Janssen, Cl้ment & Bont, 2012 (MESOHIBOLITHIDAE) (FOSSIL)
- Shwedagonia, Genus Shwedagonia Batten , 1956 (GOSSELETINIDAE) (FOSSIL)
- shyana, Chaetopleura shyana A. Ferreira, 1983 - (CHAETOPLEURIDAE)
- shyana, Terebra shyana T. Bratcher, T.A. Burch & R.D. Burch, 1970 - (TEREBRIDAE)
- shyndense, Metalegoceras shyndense Leonova, 1989 † - (METALEGOCERATIDAE) (FOSSIL)
- shyndensis, Crimites shyndensis Leonova, 1988 † - (ADRIANITIDAE) (FOSSIL)
- shyndensis, Cardiella shyndensis Leonova, 1981 † - (MARATHONITIDAE) (FOSSIL)
- Shyndoceras, syn of: Genus Metaperrinites Ruzhencev , 1950 (PERRINITIDAE) (FOSSIL)
- shyorum, Epitonium shyorum H. DuShane & J.H. McLean, 1968 - (EPITONIIDAE)
- Siaesella, Genus Siaesella Y. Kano & T. Kase, 2008 (NERITILIIDAE)
- Sialoherpia, Genus Sialoherpia L. Salvini-Plaw้n, 1978 (SIMROTHIELLIDAE)
- siamea, Turbo siamea P.F. Röding, 1798 - syn of: Batillus cornutus (J. Lightfoot, 1786) - (TURBINIDAE)
- siamensis, Anadara siamensis H. Lynge, 1909 - syn of: Anadara vellicata (L.A. Reeve, 1844) - (ARCIDAE)
- siamensis, Hemiplecta siamensis (L. Pfeiffer, 1856) - (ARIOPHANTIDAE)
- siamensis, Megaustenia siamensis (W.A. Haines, 1858) - (ARIOPHANTIDAE)
- siamensis, Bithynia siamensis I. Lea, 1856 - (BITHYNIIDAE)
- siamensis, Wattebledia siamensis O.F. von Möllendorff, 1902 - (BITHYNIIDAE)
- siamensis, Pseudobuliminus siamensis (J.H. Redfield, 1853) - (BRADYBAENIDAE)
- siamensis, Chloritis siamensis O.F. von Möllendorff, 1898 - (CAMAENIDAE)
- siamensis, Kalloconus pulcher siamensis (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- siamensis, Cyclophorus siamensis G.B. Sowerby, 1850 - (CYCLOPHORIDAE)
- siamensis, Corbicula siamensis B. Prashad, 1928 - (CYRENIDAE)
- siamensis, Dreissena siamensis S. Clessin, 1886 - syn of: Septifer excisus (Weigmann, 1837) - (DREISSENIDAE)
- siamensis, Dreissena siamensis P.M.A. Morelet, 1866 - syn of: Limnoperna fortunei (R.W. Dunker, 1857) - (DREISSENIDAE)
- siamensis, Melampus siamensis Martens, 1865 - (ELLOBIIDAE)
- siamensis, Laemodonta siamensis (P.M.A. Morelet, 1875) - (ELLOBIIDAE)
- siamensis, Buliminus siamensis J.H. Redfield, 1853 - syn of: Pseudobuliminus siamensis (J.H. Redfield, 1853) - (ENIDAE)
- siamensis, Scintilla siamensis C.F. Lützen & C. Nielsen, 2005 - (GALEOMMATIDAE)
- siamensis, Limnoperna siamensis (P.M.A. Morelet, 1866) - (MYTILIDAE)
- siamensis, Septifer siamensis S. Clessin, 1886 - syn of: Septifer excisus (Weigmann, 1837) - (MYTILIDAE)
- siamensis, Amphioctopus siamensis (A. Nateewathana & M.D. Norman, 1999) - (OCTOPODIDAE)
- siamensis, Oliva siamensis P.L. Duclos, 1844 - syn of: Oliva flammulata J.B.P.A. Lamarck, 1811 - (OLIVIDAE)
- siamensis, Brotia siamensis (A. Brot, 1886) - (PACHYCHILIDAE)
- siamensis, Paludomus siamensis W.T. Blanford, 1903 - (PALUDOMIDAE)
- siamensis, Novaculina siamensis L.J. Morlet, 1889 - (PHARIDAE)
- siamensis, Pholas siamensis L. Spengler, 1792 - syn of: Pholas orientalis J.F. Gmelin, 1791 - (PHOLADIDAE)
- siamensis, Elysia siamensis C.K. Swennen, 1998 - (PLAKOBRANCHIDAE)
- siamensis, Gyraulus siamensis (E.C. Von Martens, 1867) - (PLANORBIDAE)
- siamensis, Ferrissia siamensis R.A.M. Brandt, 1974 - (PLANORBIDAE)
- siamensis, Hubendickia siamensis (R.A.M. Brandt, 1974) - (POMATIOPSIDAE)
- siamensis, Rehderiella siamensis R.A.M. Brandt, 1974 - syn of: Hubendickia siamensis (R.A.M. Brandt, 1974) - (POMATIOPSIDAE)
- siamensis, Pupina siamensis (O.F. von Möllendorff, 1902) - (PUPINIDAE)
- siamensis, Pyrgiscus siamensis (E. Saurin, 1962) - (PYRAMIDELLIDAE)
- siamensis, Eulimella siamensis E. Robba, S.I. Di Geronimo, N. Chaimanee & al., 2004 - (PYRAMIDELLIDAE)
- siamensis, Perrottetia siamensis (L. Pfeiffer, 1862) - (STREPTAXIDAE)
- siamensis, Tellina siamensis E.C. Von Martens, 1860 - syn of: Tellina capsoides J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- siamensis, Lyrodus siamensis P. Bartsch, 1927 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- siamensis, Modellnaia siamensis R.A.M. Brandt, 1974 - (UNIONIDAE)
- siamensis, Unio siamensis I. Lea, 1866 - syn of: Trapezoideus exolescens (A.A. Gould, 1843) - (UNIONIDAE)
- siamensis, Timoclea siamensis (H. Lynge, 1909) - (VENERIDAE)
- siamensis, Valiguna siamensis (E.C. Von Martens, 1867) - (VERONICELLIDAE)
- siamensis, Semperula siamensis G.J. Von Grimpe & H. Hoffmann, 1925 - syn of: Valiguna siamensis (E.C. Von Martens, 1867) - (VERONICELLIDAE)
- siamensis, Mekongia siamensis (G.R. von Frauenfeld, 1865) - (VIVIPARIDAE)
- siamensis goniomphalos, Bithynia siamensis goniomphalos (P.M.A. Morelet, 1866) - (BITHYNIIDAE)
- siamensis obesula, Pseudobuliminus siamensis obesula (C.M.F. Ancey, 1888) - (BRADYBAENIDAE)
- siamensis obesula, Buliminus siamensis obesula C.M.F. Ancey, 1888 - syn of: Pseudobuliminus siamensis obesula (C.M.F. Ancey, 1888) - (ENIDAE)
- Siamnautilus, Genus Siamnautilus Ishibashi & al., 1994 (TAINOCERATIDAE) (FOSSIL)
- Siamopaludina, Genus Siamopaludina R.A.M. Brandt, 1968 (VIVIPARIDAE)
- sianensis, Cernuella sianensis E. Caziot in É.A.A. Locard - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- siangtanensis, Pseudohalorites siangtanensis Chao, 1940 † - syn of: Zhonglupuceras celestre (Yabe, 1928 †) - (PSEUDOHALORITIDAE) (FOSSIL)
- sianicum, Carychium sianicum E. Caziot, 1910 - syn of: Carychium minimum O.F. Müller, 1774 - (ELLOBIIDAE)
- siantanensis, Formosana pacifica siantanensis T.C. Yen, 1939 - (CLAUSILIIDAE)
- siapnoi, Periapta siapnoi (H. DuShane, 1977) - (EPITONIIDAE)
- siargaoensis, Geophorus siargaoensis P. Bartsch, 1918 - (HELICINIDAE)
- sibana, Chrysallida sibana (M. Yokoyama, 1927) - (PYRAMIDELLIDAE)
- sibanicuensis, Bermudezia bermudezi sibanicuensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- sibbaldi, Dolomena plicata sibbaldi (G.B. I Sowerby, 1842) - (STROMBIDAE)
- sibbaldii, Anatinella sibbaldii G.B. I Sowerby, 1833 - syn of: Anatinella nicobarica (J.F. Gmelin, 1791) - (ANATINELLIDAE)
- sibelius, Proplina sibelius Stinchcomb, 1986 † - (TRYBLIDIIDAE) (FOSSIL)
- sibeliuxeni, Holopea sibeliuxeni Peel 1975 † - (HOLOPEIDAE) (FOSSIL)
- sibericus, Sibirenauta sibericus (C.A. Westerlund, 1876) - (PHYSIDAE)
- Siberioceras, Genus Siberioceras Zhuravleva, 1957 (ORTHOCERIDA (unassigned)) (FOSSIL)
- SIBERIONAUTILIDAE Popov, 1951 - Family (CEPHALOPODA-NAUTILOIDEA-NAUTILIDA) (FOSSIL)
- Siberionautilus, Genus Siberionautilus Popov, 1951 (SIBERIONAUTILIDAE) (FOSSIL)
- Siberiptychites, Subgenus Polyptychites (Siberiptychites) Schmidt, 1872 (POLYPTYCHITIDAE) (FOSSIL)
- siberlingi, Paracrochordiceras siberlingi Kummel & Steele, 1962 † - syn of: Anaflemingites siberlingi (Kummel & Steele, 1962 †) - (ACROCHORDICERATIDAE) (FOSSIL)
- siberlingi, Anaflemingites siberlingi (Kummel & Steele, 1962 †) - (FLEMINGITIDAE) (FOSSIL)
- Siberobythynella, Genus Siberobythynella Ioganzen, 1982 (POMATIOPSIDAE)
- Siberovalvata, Subgenus Borysthenia (Siberovalvata) Y.I. Starobogatov & F. Zatrawkin, 1985 (VALVATIDAE)
- sibertae, Parahormotomina sibertae Blodgett & al., 1999 † - (MURCHISONIIDAE) (FOSSIL)
- siberutense, Dentalium siberutense H.P. Plate, 1908 - syn of: Entalinopsis intercostata (M. Boissevain, 1906) - (DENTALIIDAE)
- siberutensis, Melanella siberutensis (K.H.J. Thiele, 1925) - (EULIMIDAE)
- siberutensis, Cadulus siberutensis S.G.A. Jaeckel, 1932 - (GADILIDAE)
- siberutensis, Limatula siberutensis (K.H.J. Thiele, 1920) - (LIMIDAE)
- siberutensis, Limopsis siberutensis K.H.J. Thiele & S.G.A. Jaeckel, 1931 - (LIMOPSIDAE)
- siberutensis, Pagodula siberutensis (K.H.J. Thiele, 1925) - (MURICIDAE)
- siberutensis, Ennucula siberutensis (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (NUCULIDAE)
- siberutensis, Nucula siberutensis K.H.J. Thiele & S.G.A. Jaeckel, 1931 - syn of: Ennucula siberutensis (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (NUCULIDAE)
- siberutensis, Amalda siberutensis K.H.J. Thiele, 1925 - (OLIVIDAE)
- siberutensis, Pleurotomella siberutensis (K.H.J. Thiele, 1925) - (RAPHITOMIDAE)
- siberutensis, Halystina siberutensis (K.H.J. Thiele, 1925) - (SEGUENZIIDAE)
- siberutensis, Tindaria siberutensis K.H.J. Thiele & S.G.A. Jaeckel, 1931 - (TINDARIIDAE)
- siberutensis, Yoldiella siberutensis (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (YOLDIIDAE)
- sibinensis, Valvata sibinensis M. von Neumayr in M. von Neumayr & C.R.C. Paul, 1875 † - (VALVATIDAE) (FOSSIL)
- sibinensis balteata, Valvata sibinensis balteata (. Brusina, 1878 †) - (VALVATIDAE) (FOSSIL)
- sibinensis drimensis, Valvata sibinensis drimensis P.S. Pavlovic, 1903 † - (VALVATIDAE) (FOSSIL)
- sibinensis sayni, Valvata sibinensis sayni Delafond & Depéret, 1893 † - (VALVATIDAE) (FOSSIL)
- sibinjensis, Gyraulus sibinjensis (. Brusina, 1897) - (PLANORBIDAE)
- Sibirenauta, Genus Sibirenauta Y.I. Starobogatov & E.A. Streletzkaja, 1967 (PHYSIDAE)
- sibirica, Bithynia sibirica C.A. Westerlund, 1886 - (BITHYNIIDAE)
- sibirica, Latouchella sibirica Vostokova, 1962 † - syn of: Oelandiella sibirica (Vostokova, 1962 †) - (COREOSPIRIDAE) (FOSSIL)
- sibirica, Doris sibirica C.W.S. Aurivillius, 1887 - syn of: Calycidoris guentheri F.D. Abraham, 1876 - (DORIDIDAE)
- sibirica, Ferganoconcha sibirica (Tschernyschev, 1937 †) - (FERGANOCONCHIDAE) (FOSSIL)
- sibirica, Fordilla sibirica Krasilova, 1977 † - syn of: Fordilla troyensis Barrande, 1881 † - (FORDILLIDAE) (FOSSIL)
- sibirica, Oelandiella sibirica (Vostokova, 1962 †) - (HELCIONELLIDAE) (FOSSIL)
- sibirica, Helix sibirica C.A. Westerlund, 1897 - syn of: Chilanodon gerstfeldti (W. Dybowski, 1901) - (HELICIDAE)
- sibirica, Helix sibirica L. Pfeiffer, 1853 - syn of: Fruticicola schrencki (A.T. von Middendorff, 1851) - (HELICIDAE)
- sibirica, Kolymia sibirica Muromtseva, 1979 † - (KOLYMIIDAE) (FOSSIL)
- sibirica, Galba sibirica (C.A. Westerlund, 1885) - (LYMNAEIDAE)
- sibirica, Sibirenauta sibirica (C.A. Westerlund, 1876) - (PHYSIDAE)
- sibirica, Bositra sibirica Kurushin, 1980 † - (POSIDONIIDAE) (FOSSIL)
- sibirica, Rissoa sibirica H.B.S. Friele, 1878 - syn of: Frigidoalvania janmayeni (H.B.S. Friele, 1878) - (RISSOIDAE)
- sibirica, Sanguinolites sibirica Kulikov, 1967 † - syn of: Myonia gibbosa Maslennikow, 1959 † - (SANGUINOLITIDAE) (FOSSIL)
- sibirica, Heraultia sibirica Missarzhevsky, 1974 † - syn of: Watsonella crosbyi A.W. Grabau, 1900 † - (STENOTHECIDAE) (FOSSIL)
- sibirica, Bankia sibirica G.F. Roch, 1934 - syn of: Bankia setacea (G.W. Tryon, 1860) - (TEREDINIDAE)
- sibirica, Valvata sibirica A.T. von Middendorff, 1851 - (VALVATIDAE)
- sibirica middendorffi, Cincinna sibirica middendorffi I.M. Moskvicheva, 1985 - syn of: Cincinna middendorffi (I.M. Moskvicheva, 1985) - (VALVATIDAE)
- sibiricum, Pseudancylastrum sibiricum (G. Gerstfeldt, 1859) - (ACROLOXIDAE)
- sibiricum, Kummeloceras sibiricum Shimanskiy, 1967 † - (DOMATOCERATIDAE) (FOSSIL)
- sibiricum, Carychiella sibiricum (C.A. Westerlund, 1897) - (ELLOBIIDAE)
- sibiricum, Oratoceras sibiricum P.A. Zhuravleva † - (ONCOCERIDA (unassigned)) (FOSSIL)
- sibiricum, Metarmenoceras sibiricum P.A. Zhuravleva, 1959 † - (ORMOCERATIDAE) (FOSSIL)
- sibiricum, Proterocameroceras sibiricum I. Balashov, 1955 † - (PROTEROCAMEROCERATIDAE) (FOSSIL)
- sibiricum, Pseudosvalbardiceras sibiricum (Mojsisovics, 1886 †) - (SIBIRITIDAE) (FOSSIL)
- sibiricum, Pisidium sibiricum C.A. Westerlund, 1876 - syn of: Pisidium lilljeborgi S. Clessin, 1886 - (SPHAERIIDAE)
- sibiricus, Mesarion sibiricus (H.R. Simroth, 1901) - (ARIONIDAE)
- sibiricus, Prosoptychus sibiricus Vostokova, 1955 † - (BELLEROPHONTIDAE) (FOSSIL)
- sibiricus, Muusoctopus sibiricus (P. Löyning, 1930) - (ENTEROCTOPODIDAE)
- sibiricus, Anabaroconus sibiricus Gubanov & al., 2004 † - (HELCIONELLIDAE) (FOSSIL)
- sibiricus, Leptochiton sibiricus (Shurygin, 2001 †) - (LEPTOCHITONIDAE) (FOSSIL)
- sibiricus, Ancylus sibiricus G. Gerstfeldt, 1859 - syn of: Pseudancylastrum aculiferum Y.I. Starobogatov, 1989 - (PLANORBIDAE)
- sibiricus, Permoceramus sibiricus Muromtseva, 1979 † - syn of: Kolymia sibirica Muromtseva, 1979 † - (PTERIIDA (unassigned)) (FOSSIL)
- sibiricus, Germanonautilus sibiricus E.S. Sobolev, 1989 † - (TAINOCERATIDAE) (FOSSIL)
- Sibirigalba, syn of: Genus Galba F. von P. Schrank, 1803 (LYMNAEIDAE)
- Sibirinka, Genus Sibirinka Bogolepova & Krํ, 1995 (ANTIPLEURIDAE) (FOSSIL)
- Sibirisphaerium, syn of: Genus Sphaerium J.A. Scopoli, 1777 (SPHAERIIDAE)
- Sibirites, Genus Sibirites Mojsisovics , 1886 (SIBIRITIDAE) (FOSSIL)
- SIBIRITIDAE Mojsisovics, 1896 - Family (CEPHALOPODA-AMMONOIDEA-CERATITIDA) (FOSSIL)
- Sibirobythinella, Genus Sibirobythinella A.C.J. Johansen & Y.I. Starobogatov, 1982 (POMATIOPSIDAE)
- Sibiroctenia, Genus Sibiroctenia Krasilova, 1976 (NUCULIDA (unassigned)) (FOSSIL)
- sibirzevi, Palaeanodonta sibirzevi (Amalitsky, 1892 †) - (PALAEANODONTIDAE) (FOSSIL)
- sibleti, Australdonta sibleti A.F. Sartori, O. Gargominy & Fontaine, 2013 - (ENDODONTIDAE)
- sibleyense, Mulceodens sibleyense (La Rocque, 1950 †) - (BRANSONIIDAE) (FOSSIL)
- sibleyensis, Murchisonia sibleyensis E.G. Linsley, 1968 † - (MURCHISONIIDAE) (FOSSIL)
- sibleyensis, Palaeozygopleura sibleyensis E.G. Linsley, 1968 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- sibogae, Acanthochitona sibogae (K.H.J. Thiele, 1909) - (ACANTHOCHITONIDAE)
- sibogae, Aplysia sibogae L.S.R. Bergh, 1905 - (APLYSIIDAE)
- sibogae, Chaetoderma sibogae (H.A. Stork, 1941) - (CHAETODERMATIDAE)
- sibogae, Doriprismatica sibogae (L.S.R. Bergh, 1905) - (CHROMODORIDIDAE)
- sibogae, Makiyamaia sibogae T. Shuto, 1970 - (CLAVATULIDAE)
- sibogae, Clavosurcula sibogae M.M. Schepman, 1913 - (COCHLESPIRIDAE)
- sibogae, Conus sibogae M.M. Schepman, 1913 - syn of: Eremiconus lizardensis (J.C.H. Crosse, 1865) - (CONIDAE)
- sibogae, Cylichna sibogae M.M. Schepman, 1913 - (CYLICHNIDAE)
- sibogae, Cymbulia sibogae J.J. Tesch, 1903 - (CYMBULIIDAE)
- sibogae, Compressidentalium sibogae (M. Boissevain, 1906) - (DENTALIIDAE)
- sibogae, Platydoris sibogae L.S.R. Bergh, 1905 - syn of: Platydoris scabra (G.L.C.F.D. Cuvier, 1804) - (DISCODORIDIDAE)
- sibogae, Cylindriscala sibogae (M.M. Schepman, 1909) - (EPITONIIDAE)
- sibogae, Pelseneeria sibogae (M.M. Schepman & H.F. Nierstrasz, 1909) - (EULIMIDAE)
- sibogae, Hervia sibogae L.S.R. Bergh, 1905 - syn of: Cuthona sibogae (L.S.R. Bergh, 1905) - (FACELINIDAE)
- sibogae, Cuthona sibogae (L.S.R. Bergh, 1905) - (FIONIDAE)
- sibogae, Fissurella sibogae G.W. Nowell-Usticke, 1969 - (FISSURELLIDAE)
- sibogae, Emarginella sibogae (M.M. Schepman, 1908) - (FISSURELLIDAE)
- sibogae, Gastropteron sibogae L.S.R. Bergh, 1905 - (GASTROPTERIDAE)
- sibogae, Tucetona sibogae A. Matsukuma, 1982 - (GLYCYMERIDIDAE)
- sibogae, Melliteryx sibogae B. Prashad, 1932 - (LASAEIDAE)
- sibogae, Uroteuthis sibogae (W. Adam, 1954) - (LOLIGINIDAE)
- sibogae, Lucinoma sibogae R. von Cosel & P. Bouchet, 2008 - (LUCINIDAE)
- sibogae, Heterocithara sibogae T. Shuto, 1970 - (MANGELIIDAE)
- sibogae, Nebularia sibogae M.M. Schepman, 1911 - syn of: Nebularia suturata L.A. Reeve, 1845 - (MITRIDAE)
- sibogae, Pazinotus sibogae (M.M. Schepman, 1911) - (MURICIDAE)
- sibogae, Solamen sibogae B. Prashad, 1932 - syn of: Solamen spectabilis (A. Adams, 1862) - (MYTILIDAE)
- sibogae, Cyllene sibogae M.M. Schepman, 1911 - (NASSARIIDAE)
- sibogae, Oliva sibogae E.J. Petuch & D.M. Sargent, 1986 - syn of: Oliva dubia M.M. Schepman, 1904 - (OLIVIDAE)
- sibogae, Epideira sibogae (M.M. Schepman, 1913) - (PSEUDOMELATOMIDAE)
- sibogae, Pteria sibogae B. Prashad, 1932 - (PTERIIDAE)
- sibogae, Eulimella sibogae M.M. Schepman, 1909 - (PYRAMIDELLIDAE)
- sibogae, Gymnobela sibogae (M.M. Schepman, 1913) - (RAPHITOMIDAE)
- sibogae, Spergo sibogae M.M. Schepman, 1913 - syn of: Gymnobela sibogae (M.M. Schepman, 1913) - (RAPHITOMIDAE)
- sibogae, Retusa sibogae M.M. Schepman, 1913 - (RETUSIDAE)
- sibogae, Meloscaphander sibogae M.M. Schepman, 1913 - (SCAPHANDRIDAE)
- sibogae, Guttula sibogae M.M. Schepman, 1908 - (SEGUENZIIDAE)
- sibogae, Abra sibogae B. Prashad, 1932 - syn of: Abra sibogai (B. Prashad, 1932) - (SEMELIDAE)
- sibogae, Teinostoma sibogae H.A. Pilsbry & E.G. Vanatta, 1902 - (TORNIDAE)
- sibogae, Trivellona sibogae (M.M. Schepman, 1909) - (TRIVIIDAE)
- sibogae, Gemmula sibogae (M.M. Schepman, 1913) - (TURRIDAE)
- sibogae, Pleurotoma sibogae M.M. Schepman, 1913 - syn of: Gemmula sibogae (M.M. Schepman, 1913) - (TURRIDAE)
- sibogae, Lamellaria sibogae (L.S.R. Bergh in M.M. Schepman, 1908) - (VELUTINIDAE)
- sibogae minor, Trivia sibogae minor M.M. Schepman, 1909 - syn of: Trivellona schepmani (F.A. Schilder, 1941) - (TRIVIIDAE)
- sibogaensis, Lamellileda sibogaensis (B. Prashad, 1932) - (NUCULANIDAE)
- sibogai, Bathyarca sibogai (B. Prashad, 1932) - (ARCIDAE)
- sibogai, Isoconcha sibogai P. Dautzenberg & H. Fischer in J.P.L. Pelseneer, 1911 - (BASTEROTIIDAE)
- sibogai, Cardiomya sibogai (B. Prashad, 1932) - (CUSPIDARIIDAE)
- sibogai, Limatula sibogai (B. Prashad, 1932) - (LIMIDAE)
- sibogai, Curvemysella sibogai (B. Prashad, 1932) - (MONTACUTIDAE)
- sibogai, Montacuta sibogai B. Prashad, 1932 - syn of: Curvemysella sibogai (B. Prashad, 1932) - (MONTACUTIDAE)
- sibogai, Nuculana sibogai B. Prashad, 1932 - (NUCULANIDAE)
- sibogai, Amussium sibogai P. Dautzenberg & A.R.J.B. Bavay, 1904 - syn of: Propeamussium sibogai P. Dautzenberg, 1912 - (PECTINIDAE)
- sibogai, Propeamussium sibogai P. Dautzenberg, 1912 - (PROPEAMUSSIIDAE)
- sibogai, Gari sibogai B. Prashad, 1932 - (PSAMMOBIIDAE)
- sibogai, Abra sibogai (B. Prashad, 1932) - (SEMELIDAE)
- sibogai, Abrina sibogai B. Prashad, 1932 - syn of: Abra sibogai (B. Prashad, 1932) - (SEMELIDAE)
- Sibogasyrinx, Genus Sibogasyrinx A. Powell, 1969 (COCHLESPIRIDAE)
- sibolonensis, Helicostyla mateoi sibolonensis P. Bartsch, 1932 - (BRADYBAENIDAE)
- siboneyensis, Macroceramus siboneyensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- sibuetae, Amalda sibuetae Y.I. Kantor & P. Bouchet, 1999 - (OLIVIDAE)
- sibuetae, Pyropelta sibuetae A. Warén & P. Bouchet, 2009 - (PYROPELTIDAE)
- sibukoensis, Apiotoma tibiaformis sibukoensis (A.W.B. Powell, 1969) - (COCHLESPIRIDAE)
- sibukoensis, Gemmula sibukoensis A.W.B. Powell, 1964 - (TURRIDAE)
- sibumasuense, Mooreoceras sibumasuense Niko & al., 2005 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- Sibumasuoceras, Genus Sibumasuoceras Niko & Sone, 2015 (PSEUDORTHOCERATIDAE) (FOSSIL)
- sibutuensis, Chloritis sibutuensis (E.A. Smith, 1894) - (CAMAENIDAE)
- sibuyanensis, Scabricola sibuyanensis G.B. III Sowerby, 1914 - syn of: Scabricola alabaster (G.B. III Sowerby, 1900) - (MITRIDAE)
- sibuyanica, Chrysallis calobapta sibuyanica O.F. von Möllendorff, 1898 - (BRADYBAENIDAE)
- sibuyanica, Chloraea dryope sibuyanica W.J. Broderip - (BRADYBAENIDAE)
- sibuyanica, Schistoloma alta sibuyanica P. Bartsch, 1915 - (PUPINIDAE)
- sibuyanica, Trochomorpha sibuyanica J.G. Hidalgo, 1866 - (TROCHOMORPHIDAE)
- sibylla, Hemiplecta sibylla C.M. Tapparone-Canefri, 1883 - (ARIOPHANTIDAE)
- sibylla, Prorokia sibylla (A.V.M.D. D'Orbigny, 1850 †) - (ASTARTIDAE) (FOSSIL)
- sibyllae, Albinaria petrosa sibyllae W.A. Fauer, 1993 - (CLAUSILIIDAE)
- sibyllae, Mactra sibyllae A. Valenciennes, 1858 - syn of: Spisula sachalinensis (L. von Schrenck, 1862) - (MACTRIDAE)
- sibyllae, Pecten sibyllae G.B. Sowerby III, 1882 - syn of: Talochlamys gemmulata (L.A. Reeve, 1853) - (PECTINIDAE)
- Sibyllites, Genus Sibyllites Mojsisovics, 1893 (TROPITIDAE) (FOSSIL)
- Sibyllonautilus, Genus Sibyllonautilus Diener, 1915 (TAINOCERATIDAE) (FOSSIL)
- sica, Albinaria brevicollis sica A. Fuchs & F. Käufel, 1936 - (CLAUSILIIDAE)
- sica, Marginella sica B.C. Cotton, 1957 - syn of: Alaginella vercoi (W.L. May, 1911) - (MARGINELLIDAE)
- sicana, Paludinella sicana (G.A. Brugnone, 1876) - (ASSIMINEIDAE)
- sicana, Murella platychela sicana (A.E.J. Férussac, 1822) - (HELICIDAE)
- Sicania, syn of: Genus Siciliaria W. von Vest, 1867 (CLAUSILIIDAE)
- Sicanites, Genus Sicanites Gemmellaro , 1887 (MEDLICOTTIIDAE) (FOSSIL)
- sicanoides, Rossmaessleria sicanoides (W. Kobelt, 1881) - (HELICIDAE)
- sicanoides albina, Rossmaessleria sicanoides albina (W. Kobelt, 1881) - (HELICIDAE)
- sicanoides polita, Rossmaessleria sicanoides polita (W. Kobelt, 1881) - (HELICIDAE)
- sicanoides unifasciata, Rossmaessleria sicanoides unifasciata (W. Kobelt, 1881) - (HELICIDAE)
- sicanus, Aviculopecten sicanus C. Gemmellaro, 1896 † - (AVICULOPECTINIDAE) (FOSSIL)
- sicardi, Jouaniceras sicardi (Grossouvre, 1894 †) - (NOSTOCERATIDAE) (FOSSIL)
- sicaria, Lithophaga sicaria Lutkevich & Lobanova, 1956 † - syn of: Lithophaga gigantea Stuckenberg, 1898 † - (MYTILIDAE) (FOSSIL)
- sicarisinus, Dosinia sicarisinus B.F. Kensley & Pether, 1986 † - (VENERIDAE) (FOSSIL)
- sicarius, Solen sicarius A.A. Gould, 1850 - (SOLENIDAE)
- sichang, Anauchen sichang S. Panha & J.B. Burch, 2002 - (HYPSELOSTOMATIDAE)
- sichotealinica, Amuranodonta sichotealinica A. Korniushin, 1998 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- Sichuanaceras, Genus Sichuanaceras (ORTHOCERIDA (unassigned)) (FOSSIL)
- sichuanense, Changhsingoceras sichuanense J.K. Zhao & al., 1978 † - (CYCLOLOBIDAE) (FOSSIL)
- sichuanense, Jangziceras sichuanense K.Y. Lai, 1964 † - (ORTHOCERIDA (unassigned)) (FOSSIL)
- sichuanensis, Paragloborilus sichuanensis Yue & He, 1989 † - (CIRCOTHECIDAE) (FOSSIL)
- sichuanensis, Tongweispira sichuanensis Tong & Erwin, 2001 † - (EUOMPHALIDAE) (FOSSIL)
- sichuanensis, Etheripecten sichuanensis C. Chen & al., 1974 † - (HETEROPECTINIDAE) (FOSSIL)
- sichuanensis, Palaeolima sichuanensis H.X. Liu, 1976 † - (LIMIDAE) (FOSSIL)
- sichuanensis, Dicosmos sichuanensis Tong & Erwin, 2001 † - (NATICOPSIDAE) (FOSSIL)
- sichuanensis, Trigonodus sichuanensis (Gu, 1976 †) - (PACHYCARDIIDAE) (FOSSIL)
- sichuanensis, Pernopecten sichuanensis C. Chen & al., 1974 † - (PERNOPECTINIDAE) (FOSSIL)
- sichuanensis, Polygyrina sichuanensis Pan, 1982 † - (POLYGYRINIDAE) (FOSSIL)
- sichuanensis, Polygyrina sichuanensis Li, 1989 † - (POLYGYRINIDAE) (FOSSIL)
- sichuanensis, Sinoceltites sichuanensis J.K. Zhao & al., 1978 † - (TAPASHANITIDAE) (FOSSIL)
- sichuanensis, Yangella sichuanensis H.X. Liu & Gu, 1989 † - (TRIGONIIDA (unassigned)) (FOSSIL)
- Sichuania, Genus Sichuania Chen in Gu & al., 1976 (PTERIIDA (unassigned)) (FOSSIL)
- sichuanica, Acuticosta sichuanica Zeng & Y.Y. Liu, 1989 - (UNIONIDAE)
- Sichuanobelus, Genus Sichuanobelus Zhu & Bian, 1984 (SINOBELEMNITIDAE) (FOSSIL)
- Sichuanoceras, Genus Sichuanoceras Chang , 1962 (SICHUANOCERATIDAE) (FOSSIL)
- SICHUANOCERATIDAE Zhuravleva, 1978 - Family (CEPHALOPODA-NAUTILOIDEA-ORTHOCERATOIDEA-ORTHOCERIDA) (FOSSIL)
- Sichuanospira, Genus Sichuanospira He, 1984 (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- Sichunoceras, Genus Sichunoceras (CEPHALOPODA (unassigned)) (FOSSIL)
- siciliai, Mitrella siciliai E. Rolán & S. Gori, 2012 - (COLUMBELLIDAE)
- siciliana, Zonaria siciliana C.U.A. von Salis-Marschlins, 1793 - syn of: Zonaria pyrum (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- sicilianus, Venus casina sicilianus A. Aradas & L. Benoit, 1870 - (VENERIDAE)
- Siciliaria, Genus Siciliaria W. von Vest, 1867 (CLAUSILIIDAE)
- sicilicula, Jerania sicilicula D. Korn & al., 2010 † - (TEMERTASSETIIDAE) (FOSSIL)
- siciliensis, Paludinella siciliensis A. Paladilhe, 1877 - syn of: Paludinella sicana (G.A. Brugnone, 1876) - (ASSIMINEIDAE)
- Sicilioceras, Genus Sicilioceras Shimanskiy , 1954 (BACTRITIDAE) (FOSSIL)
- sicilis, Oleacina sicilis P.M.A. Morelet, 1849 - (OLEACINIDAE)
- Sicradiscus, Genus Sicradiscus B. Pแll-Gergely, 2013 (PLECTOPYLIDAE)
- sicula, Aplysia sicula W.J. Swainson, 1840 - syn of: Aplysia fasciata J.L.M. Poiret, 1789 - (APLYSIIDAE)
- sicula, Cavolinia sicula J.G. Bruguière, 1792 - syn of: Scaphander lignarius (C. Linnaeus, 1758) - (CAVOLINIIDAE)
- sicula, Chondrina sicula A. De Gregorio, 1895 - syn of: Chondrina avenacea (J.G. Bruguière, 1792) - (CHONDRINIDAE)
- sicula, Chtenopteryx sicula (J.B. Vérany, 1851) - (CHTENOPTERYGIDAE)
- sicula, Clavagella sicula S. Delle Chiaje, 1830 - syn of: Bryopa aperta (G.B. I Sowerby, 1823) - (CLAVAGELLIDAE)
- sicula, Cecilioides raphidia sicula J. Beckmann & G. Falkner, 2008 - (FERUSSACIIDAE)
- sicula, Emarginula sicula J.E. Gray, 1825 - (FISSURELLIDAE)
- sicula, Helix sicula L. Benoit, 1857 - syn of: Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- sicula, Cernuella sicula W. Kobelt, 1890 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- sicula, Sepioteuthis sicula J.B. Vérany, 1851 ex Rüppell MS - syn of: Chtenopteryx sicula (J.B. Vérany, 1851) - (LOLIGINIDAE)
- sicula, Loxonema sicula J.W. Hall, 1879 † - syn of: Palaeozygopleura sicula (J.W. Hall, 1879 †) - (LOXONEMATIDAE) (FOSSIL)
- sicula, Mangelia sicula L.A. Reeve, 1846 - (MANGELIIDAE)
- sicula, Milax sicula M. Lessona & C. Pollonera, 1882 - syn of: Milax nigricans (R.A. Philippi, 1836) - (MILACIDAE)
- sicula, Octopoteuthis sicula W.P.E.S. Rüppell, 1844 - (OCTOPOTEUTHIDAE)
- sicula, Ostrea sicula A. De Gregorio, 1884 - syn of: Ostrea stentina B.C.M. Payraudeau, 1826 - (OSTREIDAE)
- sicula, Daudebardia brevipes sicula And. Bivona-Bernardi, 1839 - (OXYCHILIDAE)
- sicula, Palaeozygopleura sicula (J.W. Hall, 1879 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- sicula, Pandora sicula É. Lamy, 1934 - (PANDORIDAE)
- sicula, Pedicularia sicula W.J. Swainson, 1840 - (PEDICULARIIDAE)
- sicula, Ensis sicula Van Urk, 1964 - syn of: Ensis ensis (C. Linnaeus, 1758) - (PHARIDAE)
- sicula, Hebetancylus sicula (W.P.E.S. Rüppell, 1844) - (PLANORBIDAE)
- sicula, Odostomia sicula R.A. Philippi, 1851 - syn of: Megastomia conoidea (G.B. Brocchi, 1814) - (PYRAMIDELLIDAE)
- sicula, Scaphander sicula J.G. Bruguière, 1789 - syn of: Scaphander lignarius (C. Linnaeus, 1758) - (SCAPHANDRIDAE)
- sicula, Albea sicula T.A. de M. Monterosato, 1892 - syn of: Sphincterochila candidissima (J.P.R. Draparnaud, 1801) - (SPHINCTEROCHILIDAE)
- sicula, Aegopinella sicula L. Benoit, 1857 - syn of: Aegopinella nitens (A. Michaud, 1831) - (ZONITIDAE)
- sicula sublaevigata, Pedicularia sicula sublaevigata É.A.A. Locard, 1897 - syn of: Pedicularia sicula W.J. Swainson, 1840 - (PEDICULARIIDAE)
- sicula sublevigata, Pedicularia sicula sublevigata É.A.A. Locard, 1897 - syn of: Pedicularia sicula W.J. Swainson, 1840 - (PEDICULARIIDAE)
- Siculites, Genus Siculites Gemmellaro, 1904 (PARATHISBITIDAE) (FOSSIL)
- siculum, Parvicardium siculum G.B. II Sowerby, 1841 - syn of: Parvicardium exiguum (J.F. Gmelin, 1791) - (CARDIIDAE)
- siculum, Arceodomus siculum (C. Gemmellaro, 1890 †) - (CONOCARDIIDAE) (FOSSIL)
- siculum, Conocardium siculum C. Gemmellaro, 1890 † - syn of: Arceodomus siculum (C. Gemmellaro, 1890 †) - (CONOCARDIIDAE) (FOSSIL)
- siculum, Dentalium siculum H.A. Pilsbry & B. Sharp, 1897 - syn of: Fustiaria rubescens (G.P. Deshayes, 1825) - (DENTALIIDAE)
- siculum, Orthoceras siculum C. Gemmellaro, 1889 † - (ORTHOCERATIDAE) (FOSSIL)
- siculum, Scrobicularia siculum G.B. I Sowerby, 1833 - syn of: Scrobicularia cottardii (B.C.M. Payraudeau, 1826) - (SCROBICULARIIDAE)
- siculus, Heliacus siculus (F.J. Cantraine, 1842) - (ARCHITECTONICIDAE)
- siculus, Chiton siculus J.E. Gray, 1828 - syn of: Rhyssoplax olivaceus (L. Spengler, 1797) - (CHITONIDAE)
- siculus, Conus siculus S. Delle Chiaje, 1828 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- siculus, Glycymeris siculus L.A. Reeve, 1843 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- siculus, Glycymeris siculus G.S. Poli, 1795 - syn of: Glycymeris bimaculata (G.S. Poli, 1795) - (GLYCYMERIDIDAE)
- siculus, Takia siculus F. Settepassi, 1970 - syn of: Dermomurex scalaroides (H.M.D. de Blainville, 1826) - (MURICIDAE)
- siculus, Paracenoceras siculus (C. Gemmellaro, 1868 †) - (PARACENOCERATIDAE) (FOSSIL)
- siculus, Pomatias siculus W. Kobelt, 1879 - syn of: Pomatias elegans (O.F. Müller, 1774) - (POMATIIDAE)
- siculus, Turbo siculus G.A. Brugnone, 1850 - syn of: Echinolittorina punctata (J.F. Gmelin, 1791) - (TURBINIDAE)
- sicyoides, Busycon sicyoides Gardner, 1947 † - (BUSYCONIDAE) (FOSSIL)
- sidariensis, Iglica sidariensis H. Schütt, 1980 - (HYDROBIIDAE)
- sidelia, Oliva sidelia P.L. Duclos, 1835 - (OLIVIDAE)
- sidelia, Oliva sidelia F.P. Marrat, 1871 - syn of: Oliva vidua (P.F. Röding, 1798) - (OLIVIDAE)
- sidelia lepida, Oliva sidelia lepida P.L. Duclos, 1835 - syn of: Oliva todosina lepida (P.L. Duclos, 1835) - (OLIVIDAE)
- sidelia solomonensis, Oliva sidelia solomonensis E.J. Petuch & D.M. Sargent, 1986 - syn of: Oliva todosina solomonensis E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- sideralis, Berthella sideralis S.L. Lovén, 1846 - (PLEUROBRANCHIDAE)
- siderata, Archachatina siderata (L.A. Reeve, 1849) - (ACHATINIDAE)
- siderea, Engina siderea (L.A. Reeve, 1846) - (BUCCINIDAE)
- siderea, Oospira siderea (P.M. Heude, 1886) - (CLAUSILIIDAE)
- siderea, Munditia siderea G.F. Angas, 1865 - syn of: Munditia subquadrata (J.E. Tenison-Woods, 1879) - (LIOTIIDAE)
- siderea, Morula siderea E.C. Von Martens, 1874 - syn of: Ergalatax junionae R. Houart, 2008 - (MURICIDAE)
- siderensis, Xerocrassa siderensis (H. von Maltzan, 1883) - (HYGROMIIDAE)
- sidingshanensis, Helcionella sidingshanensis W.C. Zhou & Q. Xiao, 1984 † - (HELCIONELLIDAE) (FOSSIL)
- sidneyensis, Ovatipsa sidneyensis F.A. Schilder & M. Schilder, 1938 - syn of: Ovatipsa chinensis amiges (J.C. Melvill & R. Standen, 1915) - (CYPRAEIDAE)
- sidneyensis, Amalda sidneyensis T. Ninomiya, 1991 - (OLIVIDAE)
- sidneyensis, Venus sidneyensis K.T. Menke, 1858 - syn of: Placamen chloroticum (R.A. Philippi, 1849) - (VENERIDAE)
- Sidonia, syn of: Genus Rhodope R.A. von Koelliker, 1847 (RHODOPIDAE)
- sidoniensis, Pene sidoniensis (J.G.F. de Charpentier, 1847) - (ENIDAE)
- sidoniensis edessanus, Pene sidoniensis edessanus (W. Kobelt, 1899) - (ENIDAE)
- sidorovi, Hypanis sidorovi (Y.I. Starobogatov, 1974) - (CARDIIDAE)
- sidorovi, Caspiohydrobia sidorovi Y.I. Starobogatov & S.I. Andreeva, 1981 - (HYDROBIIDAE)
- Sidula, syn of: Genus Cassidula J.E. Gray, 1847 (ELLOBIIDAE)
- siebaldii, Acteon siebaldii L.A. Reeve, 1842 - syn of: Japonactaeon sieboldii (L.A. Reeve, 1842) - (ACTEONIDAE)
- siebenalleri, Xylophaga siebenalleri J.R. Voight, 2009 - (XYLOPHAGAIDAE)
- siebenrocki, Drillia siebenrocki (R. Sturany, 1900) - (DRILLIIDAE)
- siebenrocki, Amussium siebenrocki R. Sturany, 1901 - syn of: Parvamussium siebenrocki (R. Sturany, 1901) - (PECTINIDAE)
- siebenrocki, Parvamussium siebenrocki (R. Sturany, 1901) - (PROPEAMUSSIIDAE)
- siebenrocki, Tellina siebenrocki R. Sturany, 1901 - syn of: Tellina yemenensis J.C. Melvill, 1898 - (TELLINIDAE)
- siebenthali, Pronorites siebenthali Smith, 1903 † - syn of: Pseudopronorites arkansiensis (Smith, 1896 †) - (PRONORITIDAE) (FOSSIL)
- sieboldi, Smaragdinella sieboldi A. Adams, 1864 - (HAMINOEIDAE)
- sieboldi, Sepioteuthis sieboldi L.M.A.O.E. Joubin, 1898 - syn of: Sepioteuthis lessoniana R.P. Lesson, 1830 - (LOLIGINIDAE)
- sieboldi, Thecodonta sieboldi A. Adams, 1864 - (MONTACUTIDAE)
- sieboldi, Dosinia sieboldi A. Römer, 1862 - syn of: Dosinia eduardi E. Fischer-Piette & D. Delmas, 1967 - (VENERIDAE)
- sieboldiana, Aplysia sieboldiana S. Clessin, 1889 - (APLYSIIDAE)
- sieboldiana, Acusta despecta sieboldiana (L. Pfeiffer, 1850) - (BRADYBAENIDAE)
- sieboldianus, Conus sieboldianus Makiyama, 1927 † - (CONIDAE) (FOSSIL)
- sieboldii, Japonactaeon sieboldii (L.A. Reeve, 1842) - (ACTEONIDAE)
- sieboldii, Acteon sieboldii (L.A. Reeve, 1842) - syn of: Japonactaeon sieboldii (L.A. Reeve, 1842) - (ACTEONIDAE)
- sieboldii, Pseudophaedusa sieboldii L. Pfeiffer, 1848 - syn of: Neniopsis sieboldtii (L. Pfeiffer, 1848) - (CLAUSILIIDAE)
- sieboldii, Conasprella sieboldii (L.A. Reeve, 1848) - (CONIDAE)
- sieboldii, Endemoconus sieboldii (L.A. Reeve, 1848) - syn of: Conasprella sieboldii (L.A. Reeve, 1848) - (CONIDAE)
- sieboldii, Fusus sieboldii M.M. Schepman, 1891 - syn of: Chryseofusus graciliformis (G.B. III Sowerby, 1880) - (FASCIOLARIIDAE)
- sieboldii, Diodora sieboldii (L.A. Reeve, 1850) - (FISSURELLIDAE)
- sieboldii, Haliotis gigantea sieboldii L.A. Reeve, 1846 - (HALIOTIDAE)
- sieboldii, Littoraria sieboldii R.A. Philippi, 1846 - syn of: Littoraria pallescens (R.A. Philippi, 1846) - (LITTORINIDAE)
- sieboldii, Lutraria sieboldii L.A. Reeve, 1854 - (MACTRIDAE)
- sieboldii, Oxynoe sieboldii A.D. Krohn, 1847 - syn of: Oxynoe olivacea C.S. Rafinesque, 1814 - (OXYNOIDAE)
- sieboldii, Scaphander sieboldii A. Adams, 1862 - (SCAPHANDRIDAE)
- sieboldii, Tellina sieboldii G.P. Deshayes, 1855 - (TELLINIDAE)
- sieboldii, Dosinia sieboldii L.A. Reeve, 1850 - syn of: Dosinia exasperata (R.A. Philippi, 1847) - (VENERIDAE)
- sieboldtii, Neniopsis sieboldtii (L. Pfeiffer, 1848) - (CLAUSILIIDAE)
- sieboldtii diptyx, Neniopsis sieboldtii diptyx (H.A. Pilsbry, 1902) - (CLAUSILIIDAE)
- sieboldtii emurai, Neniopsis sieboldtii emurai J.T. Kuroda & M. Hukuda, 1944 - (CLAUSILIIDAE)
- sieboldtii insularis, Neniopsis sieboldtii insularis J.T. Kuroda & M. Hukuda, 1944 - (CLAUSILIIDAE)
- siedleckyi, Abralia siedleckyi M. Lipinski, 1983 - (ENOPLOTEUTHIDAE)
- siegeniensis, Cornellites siegeniensis Eichele, 2014 † - (PTERINEIDAE) (FOSSIL)
- Siekluckia, Genus Siekluckia Czarnocki, 1989 (CYMACLYMENIIDAE) (FOSSIL)
- siekluckii, Acriclymenia siekluckii (Pajchlowa, 1972 †) - (CARINOCLYMENIIDAE) (FOSSIL)
- siemensi, Lytoceras siemensi Denckmann † - (LYTOCERATIDAE) (FOSSIL)
- Siemiradzkia, Genus Siemiradzkia Hyatt in Eastman-Zittel, 1900 (PERISPHINCTIDAE) (FOSSIL)
- siemiradzkii, Protornoceras siemiradzkii Dybczynski, 1913 † - syn of: Protornoceras polonicum Dybczynski, 1913 † - (KIRSOCERATIDAE) (FOSSIL)
- siemonmulleri, Jaworskiella siemonmulleri Poulton, 1979 † - (TRIGONIIDAE) (FOSSIL)
- siemssenii, Scaphella siemssenii (Boll, 1851 †) - (VOLUTIDAE) (FOSSIL)
- sienna, Pseudorhaphitoma sienna R.N. Kilburn, 1993 - (MANGELIIDAE)
- siennae, Setia siennae J.E. Tenison-Woods, 1876 - syn of: Cryptassiminea buccinoides (J.R.C. Quoy & J.P. Gaimard, 1834) - (RISSOIDAE)
- sierahensis, Amphidromus columellaris sierahensis H.A. Pilsbry, 1900 - (CAMAENIDAE)
- sierai, Lepetella sierai L. Dantart & A.A. Luque, 1994 - syn of: Lepetella sierrai L. Dantart & A.A. Luque, 1994 - (LEPETELLIDAE)
- sierra, Eleutheromenia sierra (G.F. Pruvot, 1890) - (PRUVOTINIDAE)
- sierrai, Conus sierrai Engerrand & Urbina, 1910 † - (CONIDAE) (FOSSIL)
- sierrai, Gibberula sierrai J. Espinosa & J.A. Ortea, 2000 - (CYSTISCIDAE)
- sierrai, Lepetella sierrai L. Dantart & A.A. Luque, 1994 - (LEPETELLIDAE)
- Sierraia, Subgenus Gabbia (Sierraia) M.T. Connolly, 1929 (BITHYNIIDAE)
- sierranus, Vespericola sierranus (S.S. Berry, 1921) - (POLYGYRIDAE)
- sieversi, Serrulina sieversi (L. Pfeiffer, 1871) - (CLAUSILIIDAE)
- sieversi, Caspicyclotus sieversi (L. Pfeiffer, 1871) - (CYCLOPHORIDAE)
- sieversi, Ljudmilena sieversi (A. Mousson, 1873) - (ENIDAE)
- sieversi, Helicarion sieversi A. Mousson, 1876 - syn of: Phenacolimax annularis (S.E. Studer, 1820) - (HELICARIONIDAE)
- sieversi, Pyrgula sieversi (S. Clessin in W. Dybowski, 1888) - (HYDROBIIDAE)
- sieversi, Pyrgula sieversi (O. Böttger, 1881) - (HYDROBIIDAE)
- sieversi, Nematurella sieversi S. Clessin in W. Dybowski, 1888 - syn of: Pyrgula sieversi (S. Clessin in W. Dybowski, 1888) - (HYDROBIIDAE)
- sieversi, Turricaspia sieversi C.M. Kolesnikov, 1947 - syn of: Pyrgula lencoranica B.M. Logvinenko & Y.I. Starobogatov, 1968 - (HYDROBIIDAE)
- sieversi, Conulopolita sieversi (O. Böttger, 1879) - (OXYCHILIDAE)
- sieversi, Planorbis sieversi A. Mousson, 1873 - (PLANORBIDAE)
- sieversi, Planorbis sieversi I.M. Likharev & Y.I. Starobogatov, 1967 - syn of: Planorbis intermixtus A. Mousson, 1874 - (PLANORBIDAE)
- sieversi, Paralenticeras sieversi U. Gerhardt, 1897 † - (SPHENODISCIDAE) (FOSSIL)
- sieversi, Anodonta sieversi H. Drouët, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- sieversi, Vertigo sieversi O. Böttger - (VERTIGINIDAE)
- sieversi, Oligolimax sieversi A. Mousson, 1876 - syn of: Phenacolimax annularis (S.E. Studer, 1820) - (VITRINIDAE)
- sieversi occidentalis, Serrulina sieversi occidentalis I.M. Likharev, 1962 - (CLAUSILIIDAE)
- sieversi substriata, Vertigo sieversi substriata I.M. Likharev & E.S. Rammelmeyer, 1952 - syn of: Vertigo sieversi O. Böttger - (VERTIGINIDAE)
- Sieversia, Subgenus Daudebardia (Sieversia) W. Kobelt, 1880 (OXYCHILIDAE)
- sifontesi, Bermudezia sifontesi (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- sifontesi, Torrecoptis sifontesi C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- Sigaloceras, Genus Sigaloceras Hyatt in Eastman-Zittel, 1900 (KOSMOCERATIDAE) (FOSSIL)
- sigaloessa, Columbella sigaloessa J.C. Melvill & R. Standen, 1896 - syn of: Indomitrella conspersa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- sigaloessa, Mitrella sigaloessa J.C. Melvill & R. Standen, 1896, 1897 - syn of: Indomitrella conspersa (J.S. Gaskoin, 1851) - (COLUMBELLIDAE)
- Sigaluta, syn of: Genus Marginellona E.C. Von Martens, 1904 (MARGINELLIDAE)
- sigana, Turbonitella sigana Dahmer, 1925 † - (NERITOPSIDAE) (FOSSIL)
- Sigapatella, Genus Sigapatella R.P. Lesson, 1830 (CALYPTRAEIDAE)
- sigaretiformis, Marmolatella sigaretiformis (de Koninck, 1881 †) - (DELPHINULOPSIDAE) (FOSSIL)
- sigaretiformis, Pareuchelus sigaretiformis (G.P. Deshayes, 1832 †) - (TURBINIDAE) (FOSSIL)
- sigaretiformis, Vanikoro sigaretiformis (V.L.V. Potiez & A. Michaud, 1838) - (VANIKORIDAE)
- sigaretina, Ampullaria sigaretina (J.B.P.A. Lamarck, 1804 †) - (AMPULLARIIDAE) (FOSSIL)
- sigaretina, Ampullina sigaretina J.B.P.A. Lamarck, 1804 † - syn of: Ampullaria sigaretina (J.B.P.A. Lamarck, 1804 †) - (AMPULLINIDAE) (FOSSIL)
- sigaretina, Mammilla sigaretina K.T. Menke, 1828 - syn of: Mammilla simiae (G.P. Deshayes, 1838) - (NATICIDAE)
- sigaretina, Natica sigaretina K.T. Menke, 1828 - syn of: Mammilla simiae (G.P. Deshayes, 1838) - (NATICIDAE)
- sigaretina berthelini, Ampullaria sigaretina berthelini A.E.M. Cossmann, 1892 † - (AMPULLARIIDAE) (FOSSIL)
- sigaretinus, Sigaretornus sigaretinus (H.A. Pilsbry, 1897) - (TORNIDAE)
- sigaretinus, Tornus sigaretinus (H.A. Pilsbry, 1897) - syn of: Sigaretornus sigaretinus (H.A. Pilsbry, 1897) - (TORNIDAE)
- sigaretoides, Worthenia sigaretoides E.A.L. Kittl, 1894 † - (LOPHOSPIRIDAE) (FOSSIL)
- Sigaretopsis, Subgenus Sigatica (Sigaretopsis) A.E.M. Cossmann, 1888 (NATICIDAE) (FOSSIL)
- sigaretornuformis, Circulus sigaretornuformis P. Lozouet, 1998 † - (TORNIDAE) (FOSSIL)
- Sigaretornus, Genus Sigaretornus T. Iredale, 1936 (TORNIDAE)
- Sigaretotrema, Subgenus Sinum (Sigaretotrema) F. Sacco, 1831 (NATICIDAE) (FOSSIL)
- Sigaretus, syn of: Genus Sinum P.F. R๖ding, 1798 (NATICIDAE)
- Sigaretus, syn of: Genus Sinum P.F. R๖ding, 1798 (NATICIDAE)
- sigaretus, Pleurotomaria sigaretus C.L.F. von Sandberger & C.L.F. von Sandberger, 1855 † - (PLEUROTOMARIIDAE) (FOSSIL)
- Sigatica, Genus Sigatica O. Meyer & T.H. Aldrich, 1886 (NATICIDAE)
- Sigaticus, Subgenus Sinum (Sigaticus) Aldrich, 1887 (NATICIDAE) (FOSSIL)
- Sigatula, Genus Sigatula H.A. Rehder, 1967 (VOLUTIDAE)
- sigela, Helix sigela J.R. Bourguignat, 1883 - syn of: Cingulifera cingulatum gobanzi G.R. von Frauenfeld, 1867 - (HELICIDAE)
- sigensis, Albea sigensis (W. Kobelt, 1882) - (SPHINCTEROCHILIDAE)
- sigeonis, Euhadra sigeonis J.T. Kuroda, 1944 - (BRADYBAENIDAE)
- siger, Purpura siger P. Dautzenberg, 1910 - syn of: Columbella adansoni K.T. Menke, 1853 - (MURICIDAE)
- sigerfoosi, Nototeredo sigerfoosi P. Bartsch, 1922 - syn of: Nototeredo knoxi (P. Bartsch, 1917) - (TEREDINIDAE)
- sigerfoosi, Teredo sigerfoosi P. Bartsch, 1922 - syn of: Nototeredo knoxi (P. Bartsch, 1917) - (TEREDINIDAE)
- sigestra, Alzoniella sigestra F.L. Giusti & M. Bodon, 1984 - (HYDROBIIDAE)
- sigilla, Mytilarca sigilla J.W. Hall, 1876 † - (AMBONYCHIIDAE) (FOSSIL)
- sigillarius, Timorites sigillarius Ruzhentsev, 1955 † - (CYCLOLOBIDAE) (FOSSIL)
- sigillata, Clionella sigillata L.A. Reeve, 1846 - syn of: Clionella semicostata (L.C. Kiener, 1840) - (CLAVATULIDAE)
- sigillata, Dimya sigillata R. Tate, 1886 † - (DIMYIDAE) (FOSSIL)
- sigillata, Domiporta sigillata (M. Azuma, 1965) - (MITRIDAE)
- sigillata, Cancilla sigillata M. Azuma, 1965 - syn of: Domiporta sigillata (M. Azuma, 1965) - (MITRIDAE)
- sigillata, Mitra sigillata M. Azuma, 1965 - syn of: Domiporta sigillata (M. Azuma, 1965) - (MITRIDAE)
- sigillata, Natica sigillata J.H. McLean, 1970 - (NATICIDAE)
- sigillata, Pleurotoma sigillata L.A. Reeve, 1846 - syn of: Clionella semicostata (L.C. Kiener, 1840) - (TURRIDAE)
- sigismundi, Goniojuvavites sigismundi (Mojsisovics, 1893 †) - (JUVAVITIDAE) (FOSSIL)
- sigma, Latiala sigma Saul, 1998 † - (APORRHAIDAE) (FOSSIL)
- sigma, Macedonica frauenfeldi sigma (C.A. Westerlund, 1884) - (CLAUSILIIDAE)
- sigma, Columbella sigma K.H. Barnard, 1959 - syn of: Euplica ionida (P.L. Duclos, 1840) - (COLUMBELLIDAE)
- sigma, Gastrioceras sigma Wright † - (GASTRIOCERATIDAE) (FOSSIL)
- sigma, Schileykula sigma B. Hausdorf, 1996 - (ORCULIDAE)
- sigma, Chrysallida sigma (C. Hedley, 1907) - (PYRAMIDELLIDAE)
- sigmastoma, Daphnella sigmastoma C. Hedley, 1922 - (RAPHITOMIDAE)
- Sigmataxis, Genus Sigmataxis H.A. Pilsbry, 1907 (OLEACINIDAE)
- sigmatopleura, Buccinum sigmatopleura W.H. Dall, 1907 - (BUCCINIDAE)
- Sigmesalia, Genus Sigmesalia H.J. Finlay & J. Marwick, 1937 (TURRITELLIDAE) (FOSSIL)
- sigmifer, Rissoina sigmifer O.A.L. Mörch, 1876 - (RISSOINIDAE)
- Sigmocycloceras, Genus Sigmocycloceras Kobayashi, 1934 (SACTORTHOCERATIDAE) (FOSSIL)
- sigmoida, Drillia sigmoida (H.G. Bronn, 1831 †) - (DRILLIIDAE) (FOSSIL)
- sigmoidale, Pravitoceras sigmoidale Yabe, 1902 † - (AMMONOIDEA (unassigned)) (FOSSIL)
- sigmoidale, Sigmorthoceras sigmoidale T. Kobayashi, 1927 † - syn of: Sactorthoceras makkolense (T. Kobayashi, 1927 †) - (LITUITIDAE) (FOSSIL)
- sigmoidale, Sigmorthoceras sigmoidale T. Kobayashi, 1934 † - syn of: Sactorthoceras makkolense (T. Kobayashi, 1927 †) - (LITUITIDAE) (FOSSIL)
- sigmoidale, Platyceras sigmoidale B. Phillips, 1841 † - (PLATYCERATIDAE) (FOSSIL)
- sigmoidalis, Joleaudella sigmoidalis Kobayashi, 1934 † - (BELLEROPHONTIDAE) (FOSSIL)
- sigmoidalis, Capulus sigmoidalis B. Phillips, 1841 † - (CAPULIDAE) (FOSSIL)
- sigmoidalis, Hypacanthoplites sigmoidalis Casey † - (PARAHOPLITIDAE) (FOSSIL)
- sigmoidea, Cyrtodontula sigmoidea (Billings, 1858 †) - (CYRTODONTIDAE) (FOSSIL)
- sigmoidea, Crassopleura sigmoidea (H.G. Bronn, 1831 †) - (DRILLIIDAE) (FOSSIL)
- sigmoidea, Exogyra sigmoidea A.E. Reuss, 1844 † - (GRYPHAEIDAE) (FOSSIL)
- sigmoidea, Lecanospira sigmoidea Ulrich & al., 1931 † - (OPHILETIDAE) (FOSSIL)
- sigmoidea, Anulifera sigmoidea Ferrari & Damborenea, 2015 † - (PROTORCULIDAE) (FOSSIL)
- sigmoidea, Chrysallida sigmoidea (T.A. de M. Monterosato, 1880) - (PYRAMIDELLIDAE)
- sigmoidea, Turbonilla sigmoidea (J.G. Jeffreys, 1884) - (PYRAMIDELLIDAE)
- sigmoides, Itzamna sigmoides (P.M.A. Morelet, 1849) - (THYSANOPHORIDAE)
- sigmoideum, Phragmoceras sigmoideum Hedstrom, 1917 † - (PHRAGMOCERATIDAE) (FOSSIL)
- sigmoideus, Lusitanops sigmoideus P. Bouchet & A. Warén, 1980 - (RAPHITOMIDAE)
- sigmolabris, Eocylichna sigmolabris (T. Habe & Y. Ando, 1985) - (CYLICHNIDAE)
- sigmolabris, Cylichna sigmolabris T. Habe & Y. Ando, 1985 - syn of: Eocylichna sigmolabris (T. Habe & Y. Ando, 1985) - (CYLICHNIDAE)
- Sigmorthoceras, syn of: Genus Holmiceras Hyatt, 1894 (LITUITIDAE) (FOSSIL)
- signa, Helicostyla florida signa P. Bartsch, 1932 - (BRADYBAENIDAE)
- signa, Siphonalia signa (L.A. Reeve, 1846) - (BUCCINIDAE)
- signa, Cerithiopsina signa (P. Bartsch, 1921) - (CERITHIOPSIDAE)
- signa, Eucithara signa J.C. Melvill & R. Standen, 1896, 1897 - syn of: Eucithara eumerista (J.C. Melvill & R. Standen, 1896) - (MANGELIIDAE)
- signa, Mitra signa P. Bartsch, 1919 - syn of: Mitra retusa J.B.P.A. Lamarck, 1811 - (MITRIDAE)
- signae, Conus signae P. Bartsch, 1937 - syn of: Dauciconus virgatus (L.A. Reeve, 1849) - (CONIDAE)
- signae, Chondropometes magnum signae C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- signae, Turbonilla signae W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- signae, Rissoina signae P. Bartsch, 1915 - syn of: Folinia signae (P. Bartsch, 1915) - (RISSOINIDAE)
- signae, Organocoptis integra signae C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- signae, Folinia signae (P. Bartsch, 1915) - (ZEBINIDAE)
- signali, Marginella signali P. Dautzenberg & H. Fischer, 1896 - syn of: Gibberula vignali (P. Dautzenberg & H. Fischer, 1896) - (MARGINELLIDAE)
- signata, Mesocibota signata (R.W. Dunker, 1868) - (ARCIDAE)
- signata, Cardiola signata Barrande, 1881 † - (CARDIOLIDAE) (FOSSIL)
- signata, Palmadusta ziczac signata T. Iredale, 1939 - (CYPRAEIDAE)
- signata, Naticopsis signata E.F.R.K. Koken, 1900 † - (DELPHINULOPSIDAE) (FOSSIL)
- signata, Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- signata, Pleuropoma laciniosa signata M.C. Neal, 1934 - (HELICINIDAE)
- signata, Dumortieria signata Buckman † - (HILDOCERATIDAE) (FOSSIL)
- signata, Patelloida signata (H.A. Pilsbry, 1901) - (LOTTIIDAE)
- signata, Granulina signata M. Pin & F. Boyer, 1995 - (MARGINELLIDAE)
- signata, Myophorella signata (Agazziz) † - (MYOPHORELLIDAE) (FOSSIL)
- signata, Nassarius signata F. Ghisotti, 1986 ex Monterosato ms † - syn of: Tritia cuvierii (B.C.M. Payraudeau, 1826 †) - (NASSARIIDAE) (FOSSIL)
- signata, Argonerita signata (J.B.P.A. Lamarck, 1822) - (NERITIDAE)
- signata, Olivella signata (C.E. Lischke, 1869) - (OLIVELLIDAE)
- signata, Oliva februaryana signata A. Falconieri, 2009 - (OLIVIDAE)
- signata, Chondrothyrella assimilis signata C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- signata, Pteria signata L.A. Reeve, 1857 - syn of: Pteria hirundo (C. Linnaeus, 1758) - (PTERIIDAE)
- signata, Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- signata, Actinonaias signata (H.A. Pilsbry, 1910) - (UNIONIDAE)
- signata, Bukobia signata (C. Pollonera, 1906) - (UROCYCLIDAE)
- signata, Vaginula signata H.R. Simroth, 1918 - syn of: Semperula maculata (J. Templeton, 1858) - (VERONICELLIDAE)
- signata contaminata, Ambigua signata contaminata (M. Paulucci, 1878) - (HELICIDAE)
- signata cyclostoma, Pupilla signata cyclostoma C.A. Westerlund, 1893 - syn of: Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- signata cylindrica, Pupilla signata cylindrica A. Mousson, 1876 - syn of: Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- signata debilis, Pupilla signata debilis C.A. Westerlund, 1893 - syn of: Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- signata molteni, Ambigua signata molteni Unknown - (HELICIDAE)
- signata parvula, Pupilla signata parvula A. Mousson, 1876 - syn of: Primipupilla signata (A. Mousson, 1873) - (PUPILLIDAE)
- signata persianii, Ambigua signata persianii (N. Tiberi, 1878) - (HELICIDAE)
- signata reticulata, Argonerita signata reticulata (D.L.G. Karsten, 1789) - (NERITIDAE)
- signata signatior, Vaginula signata signatior H.R. Simroth, 1918 - syn of: Semperula maculata (J. Templeton, 1858) - (VERONICELLIDAE)
- signata strigata, Ambigua signata strigata (A.E.J. Férussac, 1821) - (HELICIDAE)
- signata tiburtina, Ambigua signata tiburtina (E.C. Von Martens, 1899) - (HELICIDAE)
- signata uniarmata, Ambigua signata uniarmata (M. Paulucci, 1881) - (HELICIDAE)
- signata uzielliana, Ambigua signata uzielliana (M. Paulucci, 1881) - (HELICIDAE)
- signatoides, Patelloida signatoides J.T. Kuroda & T. Habe, 1971 - syn of: Patelloida pygmaea signatoides J.T. Kuroda & T. Habe, 1971 - (LOTTIIDAE)
- signatoides, Patelloida pygmaea signatoides J.T. Kuroda & T. Habe, 1971 - (LOTTIIDAE)
- signatulum, Magdoceras signatulum (Barrande, 1865 †) - (TARPHYCERIDA (unassigned)) (FOSSIL)
- signatum, Buccinum signatum R.W. Dunker, 1846 - syn of: Nassarius kochianus (R.W. Dunker, 1846) - (BUCCINIDAE)
- signatum, Buccinum signatum R.W. Dunker, 1847 - syn of: Nassarius signatus (R.W. Dunker, 1847) - (BUCCINIDAE)
- signatum, Leptopoma signatum (L. Pfeiffer, 1856) - (CYCLOPHORIDAE)
- signatum, Cyphoma signatum H.A. Pilsbry & J.T.L. McGinty, 1939 - (OVULIDAE)
- signatum, Oxytornoceras signatum Becker, 1993 † - (TORNOCERATIDAE) (FOSSIL)
- signatus, Otostomus signatus (J.B. von Spix, 1827) - (BULIMULIDAE)
- signatus, Nassarius signatus (R.W. Dunker, 1847) - (NASSARIIDAE)
- signatus, Trochus signatus I.H. Jonas, 1844 - syn of: Priotrochus obscurus (W. Wood, 1828) - (TROCHIDAE)
- signatus, Microceramus signatus (L. Guilding, 1828) - (UROCOPTIDAE)
- signatus salleanus, Microceramus signatus salleanus H.A. Pilsbry, 1903 - (UROCOPTIDAE)
- Signepupina, Subgenus Hedleya (Signepupina) T. Iredale, 1937 (PUPINIDAE)
- signeyana, Chlanidota signeyana Powell, 1951 - (BUCCINIDAE)
- signeyensis, Notoficula signeyensis P.G. Oliver, 1983 - syn of: Notoficula signyensis P.G. Oliver, 1983 - (TRIVIIDAE)
- Signia, Subgenus Detracia (Signia) H. Adams & A. Adams, 1855 (ELLOBIIDAE)
- signicollina, Homomya signicollina J. Marwick, 1953 † - (PHOLADOMYIDAE) (FOSSIL)
- signicollina, Trigonia signicollina Fleming, 1987 † - (TRIGONIIDAE) (FOSSIL)
- signifer, Mesembrinus signifer (L. Pfeiffer, 1855) - (BULIMULIDAE)
- signifer, Conus signifer J.C.H. Crosse, 1865 - syn of: Pionoconus magus (C. Linnaeus, 1758) - (CONIDAE)
- signifer, Cymbiola signifer W.J. Broderip, 1848 - syn of: Cymbiola flavicans (J.F. Gmelin, 1791) - (VOLUTIDAE)
- signifera, Serrulina signifera C.A. Westerlund, 1897 - syn of: Caspiophaedusa perlucens (O. Böttger, 1877) - (CLAUSILIIDAE)
- signifera, Catriona signifera (K. Baba, 1961) - (FIONIDAE)
- signifera, Cuthona signifera (K. Baba, 1961) - syn of: Catriona signifera (K. Baba, 1961) - (FIONIDAE)
- significans, Metula significans H.A. Rehder, 1943 - syn of: Bartschia significans (H.A. Rehder, 1943) - (BUCCINIDAE)
- significans, Bartschia significans (H.A. Rehder, 1943) - (COLUBRARIIDAE)
- significans, Paravitrea significans (T.B. Bland, 1866) - (ZONITIDAE)
- signoidea, Cerodrillia signoidea (H.G. Bronn, 1831 †) - (DRILLIIDAE) (FOSSIL)
- signoidius, Itzamna signoidius (P.M.A. Morelet, 1851) - (THYSANOPHORIDAE)
- signum, Acteonina signum W.H. Hudleston, 1881 † - (ACTEONINIDAE) (FOSSIL)
- signum, Mangelia signum J.C. Melvill & R. Standen, 1896 - syn of: Eucithara eumerista (J.C. Melvill & R. Standen, 1896) - (MANGELIIDAE)
- signyensis, Pickenia signyensis W.F. Ponder, 1983 - (CINGULOPSIDAE)
- signyensis, Notoficula signyensis P.G. Oliver, 1983 - (TRIVIIDAE)
- sigridae, Julica schmidtii sigridae H. Nordsieck, 2006 - (CLAUSILIIDAE)
- sigridae, Stigmatica vulcanica sigridae H. Nordsieck, 2013 - (CLAUSILIIDAE)
- sigridae, Stabilea costata sigridae H. Nordsieck, 2007 - (CLAUSILIIDAE)
- sigridae, Distortiphaedusa zhaoyifani sigridae H. Nordsieck, 2012 - (CLAUSILIIDAE)
- sigsbeana, Cerithiopsis sigsbeana W.H. Dall, 1881 - syn of: Cerithiella sigsbeana (W.H. Dall, 1881) - (CERITHIOPSIDAE)
- sigsbeana, Cerithiella sigsbeana (W.H. Dall, 1881) - (NEWTONIELLIDAE)
- sigsbeei, Solatisonax sigsbeei (W.H. Dall, 1889) - (ARCHITECTONICIDAE)
- sigsbeei, Architectonica sigsbeei W.H. Dall, 1889 - syn of: Solatisonax sigsbeei (W.H. Dall, 1889) - (ARCHITECTONICIDAE)
- sigsbeei, Pectinella sigsbeei (W.H. Dall, 1886) - (ENTOLIIDAE)
- sigsbeei, Syncyclonema sigsbeei W.H. Dall, 1886 - syn of: Pectinella sigsbeei (W.H. Dall, 1886) - (ENTOLIIDAE)
- sigsbeei, Pecten sigsbeei W.H. Dall, 1886 - syn of: Pectinella sigsbeei (W.H. Dall, 1886) - (PECTINIDAE)
- sigsbeei, Leucosyrinx sigsbeei W.H. Dall, 1881 - syn of: Leucosyrinx verrillii (W.H. Dall, 1881) - (PSEUDOMELATOMIDAE)
- sigsbeei, Leucosyrinx sigsbeei P. Dautzenberg & H. Fischer, 1896 - syn of: Leucosyrinx verrillii (W.H. Dall, 1881) - (PSEUDOMELATOMIDAE)
- sigsbeei, Leucosyrinx sigsbeei F. Nordsieck, 1977 - syn of: Leucosyrinx verrillii (W.H. Dall, 1881) - (PSEUDOMELATOMIDAE)
- sigsbeei, Pleurotoma sigsbeei W.H. Dall, 1881 - syn of: Leucosyrinx verrillii (W.H. Dall, 1881) - (TURRIDAE)
- sigsbei, Leucosyrinx sigsbei (W.H. Dall, 1881) - (PSEUDOMELATOMIDAE)
- sigueyana, Chlanidota sigueyana A.W.B. Powell, 1951 - syn of: Chlanidota vestita A.W.B. Powell, 1951 - (BUCCINIDAE)
- sigurensis, Kaliella sigurensis (H.H. Godwin-Austen, 1882) - (CHRONIDAE)
- sigwartae, Leptochiton sigwartae B.I. Sirenko, 2015 - (LEPTOCHITONIDAE)
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