Aequipecten scabriusculus (FOSSIL) (Matherou †)
Talochlamys scandula (FOSSIL) (F.W. Hutton, 1873 †)
Chlamys schréteri (FOSSIL) J. Noszky, 1936 †
Eburneopecten scintillatus (FOSSIL) (T.A. Conrad, 1854 †)
Lepidopecten scissuratus (FOSSIL) (W.H. Dall, 1898 †)
Pecten seabeensis (FOSSIL) H.G. Richards, 1947 †
Pecten sealyi (FOSSIL) H.G. Richards, 1947 †
Pecten sedanensis (FOSSIL) Martin, 1909 †
Sinepecten segonzaci E. Schein, 2006
Serripecten semilaevis (FOSSIL) (McCoy, 1876 †)
Chlamys sendaiensis (FOSSIL) O. Masuda, 1962 †
Pecten sendanensis (FOSSIL) Martin, 1909 †
Chlamys seniensis (FOSSIL) (J.B.P.A. Lamarck,1819 †)
Aequipecten seniensis (FOSSIL) (J.B.P.A. Lamarck,1819 †)
Ochotochlamys senotrussovi (FOSSIL) Truschelev, 1996 †
Caribachlamys sentis (L.A. Reeve, 1853)
Pseudamussium septemradiatum (FOSSIL) (Sacco 1897) †
Neithea sergipensis (FOSSIL) White, 1887 †
Leopecten sericeus (R.B. Hinds, 1845)
Indopecten serraticosta (FOSSIL) (Bittner, 1899 †)
Chlamys sespensis (FOSSIL) R. Arnold, 1906 †
Chlamys seymouri (FOSSIL) J. Marwick, 1928 †
Laevichlamys shirahamaensis (FOSSIL) (O. Masuda, 1962 †)
Chlamys shitakaraensis (FOSSIL) Honda, 1980 †
Pecten silentiensis (FOSSIL) McLearn, 1926 †
Anguipecten simoneae H. Morrison & Whisson,2009
Pecten simplicius (FOSSIL) T.A. Conrad, 1860 †
Volachlamys singaporina (G.B. II Sowerby, 1842)
Volachlamys singaporina cumingii (L.A. Reeve, 1853)
Mimachlamys singaporinus (Sowerby, 1853)
Amussiopecten singkirensis (FOSSIL) Martin, 1909 †
Kotorapecten singularis (FOSSIL) (Slodkewitsch, 1938 †)
Chesapecten skiptonensis (FOSSIL) (W.C. Mansfield, 1936 †)
Mizuhopecten slodkewitschi (FOSSIL) V.N. Sinelnikova, 1969 †
Euvola smithi (FOSSIL) A.A. Olsson, 1914 †