Vetericardiella species (FOSSIL) †
Cardita spinulosa (FOSSIL) R. Tate, 1886 †
Venericardia spondyliformis (FOSSIL) Sijagurumayum, Singh& Kachhara, 2014 †
Cyclocardia spurca (Sowerby, 1833)
Megacardita squadronensis (FOSSIL) (Powell, 1938 †)
Carditamera squamanita (FOSSIL) (Deshayes) †
Carditamera squamatina (FOSSIL) G.P. Deshayes, 1858 †
Centrocardita squamigera (G.P. Deshayes, 1832)
Trapezicardita squamosa (FOSSIL) (Keeping) †
Cardites squamulosa (FOSSIL) (P. Nyst, 1843 †)
Cardites squamulosa ampla (A.L. Chavan & Coatman,1943 )
Cardites squamulosa scaldensis (M. Glibert, 1957 )
Cyclocardia steinkei (FOSSIL) Clark & J.W. Durham,1946 †
Glyptoactis stenygra (FOSSIL) W.P. Woodring, 1982 †
Venericardia stewarti (FOSSIL) †
Venericor stewarti (FOSSIL) (Gardner & E. Bowles,1939 †)
Cardita striata E. Forbes, 1846
Venericardia subaffinus (FOSSIL) (R. Tournouer, 1874 †)
Lazariella subalpina (FOSSIL) (O.G. Michelotti, 1839 †)
Pseudocardia subangulata (FOSSIL) B. Wade, 1926 †
Pseudocardia subcircula (FOSSIL) B. Wade, 1926 †
Fasciculicardia subintermedia (FOSSIL) (H.H. Suter, 1917 †)
Tutcheria submulticostata (FOSSIL) (A.V.M.D. D'Orbigny,1850 †)
Venericor subnipponica (FOSSIL) (T. Nagao, 1928 †)
Gujocardita subquadrata (FOSSIL) Y. Fang, 1987 †
Cyclocardia subrotunda (FOSSIL) (J.L.M. Defrance, 1828 †)
Cyclocardia subtenta (FOSSIL) (T.A. Conrad, 1849 †)
Cyclocardia subtenta quadrata (FOSSIL) (W.H. Dall †)
Arcturellina sulcata (FOSSIL) (D.C. Solanderin G. Brander, 1766 †)
Arcturellina sulcata aizyensis (FOSSIL) (G.P. Deshayes, 1858 †)
Arcturellina sulcata davidsoni (FOSSIL) (G.P. Deshayes, 1858 †)
Arcturellina sulcata serrulata (FOSSIL) (G.P. Deshayes, 1858 †)
Cardita superioris (FOSSIL) Waring, 1917 †
Cardita syrtica (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1912 †
Carditamera tamiamiensis (FOSSIL) (W.C. Mansfield, 1930 †)