Vetericardiella species (FOSSIL) † Texas, Bastrop County3 mm
Cardita spinulosa (FOSSIL) R. Tate, 1886 †
Venericardia spondyliformis (FOSSIL) Sijagurumayum, Singh& Kachhara, 2014 † India
Cyclocardia spurca (Sowerby, 1833) Panama, Coiba Island36 mm
Megacardita squadronensis (FOSSIL) (Powell, 1938 †)
Carditamera squamanita (FOSSIL) (Deshayes) †
Carditamera squamatina (FOSSIL) G.P. Deshayes, 1858 † France, Paris Basin16 mm
Centrocardita squamigera (G.P. Deshayes, 1832) Philippines, Mactan Island26 mm
Trapezicardita squamosa (FOSSIL) (Keeping) † UK, Cambridgeshire
Cardites squamulosa (FOSSIL) (P. Nyst, 1843 †) Belgium32 mm
Cardites squamulosa ampla (A.L. Chavan & Coatman,1943 ) Great Britain, Suffolk32 mm
Cardites squamulosa scaldensis (M. Glibert, 1957 ) Belgium41 mm
Cyclocardia steinkei (FOSSIL) Clark & J.W. Durham,1946 † Colombia, Sucre
Glyptoactis stenygra (FOSSIL) W.P. Woodring, 1982 † Panama, Panamá, Panamá
Venericardia stewarti (FOSSIL) † USA, Alabama, Covington
Venericor stewarti (FOSSIL) (Gardner & E. Bowles,1939 †) USA, Alabama, Monroe
Cardita striata E. Forbes, 1846
Venericardia subaffinus (FOSSIL) (R. Tournouer, 1874 †) France, Aquitaine30 mm
Lazariella subalpina (FOSSIL) (O.G. Michelotti, 1839 †)
Pseudocardia subangulata (FOSSIL) B. Wade, 1926 † Tennessee, McNairy County
Pseudocardia subcircula (FOSSIL) B. Wade, 1926 † Tennessee, McNairy County
Fasciculicardia subintermedia (FOSSIL) (H.H. Suter, 1917 †) Antarctica, Seymour Island
Tutcheria submulticostata (FOSSIL) (A.V.M.D. D'Orbigny,1850 †) Portugal, Leiria
Venericor subnipponica (FOSSIL) (T. Nagao, 1928 †) Japan, Yamaguchi, Shimonoseki
Gujocardita subquadrata (FOSSIL) Y. Fang, 1987 † China, Hunan, Chenzhou
Cyclocardia subrotunda (FOSSIL) (J.L.M. Defrance, 1828 †) France, Paris Basin17 mm
Cyclocardia subtenta (FOSSIL) (T.A. Conrad, 1849 †) Oregon, Coos bay, Astoria formation19 mm
Cyclocardia subtenta quadrata (FOSSIL) (W.H. Dall †) Oregon, Coos bay, Astoria formation27 mm
Arcturellina sulcata (FOSSIL) (D.C. Solander in G. Brander, 1766 †) France, Paris Basin15 mm
Arcturellina sulcata aizyensis (FOSSIL) (G.P. Deshayes, 1858 †) France, Paris Basin11 mm
Arcturellina sulcata davidsoni (FOSSIL) (G.P. Deshayes, 1858 †) France, Paris Basin20 mm
Arcturellina sulcata serrulata (FOSSIL) (G.P. Deshayes, 1858 †) France, Paris Basin17 mm
Cardita superioris (FOSSIL) Waring, 1917 †
Cardita syrtica (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1912 † France, Aquitaine21 mm
Carditamera tamiamiensis (FOSSIL) (W.C. Mansfield, 1930 †) Florida74 mm