Prosipho spiralis K.H.J. Thiele, 1912 Antarctic Peninsula, Graham Land10 mm
Cantharus spiralis J.E. Gray, 1839 Oman45,5 mm
Aliofusus stamineus (FOSSIL) N.F. Sohl, 1964 † USA, Mississippi
Cominella staufti (FOSSIL) A.A. Olsson, 1928 † Peru, Piura, Sullana
Turrivolutopsius stejnegeri (W.H. Dall, 1884) Aleutians Islands40 mm
Pollia stephanensis (FOSSIL) M.A. Peyrot, 1924 † France, Aquitaine
Pollia stephanensis? M.A. Peyrot, 1924
Spikebuccinum stephaniae M.G. Harasewych& Y.I. Kantor, 2004 Scotia Sea
Searlesia stichense (FOSSIL) (A.T. von Middendorff,1848 †)
Neptunea stilesi A.G. Smith, 1968 Canada, British Columbia100 mm
Prosipho stilwelli (FOSSIL) A.G. Beu, 2009 †
Beringius stimpsoni (A.A. Gould, 1860) Bering Sea, Pribiloff Islands93 mm
Colus stimpsoni (O.A.L. Mörch, 1868) New Jersey, USA97 mm
Colus stimpsoni brevis A.E. Verrill, 1882 Massachussetts
Colus stimpsoni liratulus (O.A.L. Mörch, 1867) Massachussetts
Liomesus stimpsoni W.H. Dall, 1889 Florida45,5 mm
Neptunea stonei H.A. Pilsbry, 1892 New Jersey
Lussivolutopsius strelzovae Y.I. Kantor, 1990
Neptunea striata (FOSSIL) (J. de C. Sowerby,1813 †) Belgium88 mm
Neptunea striata lyratodespecta (FOSSIL) F. Strauch, 1972 † Belgium74 mm
Pisania striata (J.F. Gmelin, 1791) Greece, Rhodos17 mm
Buccinum striatellum A.N. Golikov, 1980 Russia, Okhotsk Sea62,3 mm
Buccinum striatissimum G.B. III Sowerby, 1899 Japan, Hokkaido134 mm
Parvisipho striatus (FOSSIL) (É.A. Benoist, 1885 †) France, Aquitaine6 mm
Buccinum strigillatum W.H. Dall, 1891 Oregon31 mm
Buccinum strigillatum fucanum W.H. Dall, 1907 Washington, Juan de Fuca Strait
Engina strongi H.A. Pilsbry & H.N. Lowe,1932 California
Pollia suarezi (FOSSIL) Meunier & Gayet, 1996 †
Eocantharus subambiguus (FOSSIL) (A.V.M.D. D'Orbigny,1850 † †) France, Oise8 mm
Eocantharus subandrei (FOSSIL) (A.V.M.D. D'Orbigny,1850 †) France, Oise22 mm
Solenosteira subcarinata (FOSSIL) (J.B.P.A. Lamarck,1803 †) France, Paris Basin37 mm
Pollia subcostata (C.F.F. von Krauss, 1848) Mozambique, Nacala Bay28 mm
Neptunea subdilatata (T.C. Yen, 1936) Yellow Sea95,2 mm
Proneptunea subfenestra P.G. Oliver& G.B. Picken, 1984 South Orkney Islands
Cominella subfilicea (FOSSIL) R. Tate, 1888 †