Rhinoclama benthedii (J. Poutiers, 1984)
Bathyneaera bernardi E.M. Krylova, 1993
Cuspidaria bicarinata (J.G. Jeffreys, 1882) Florida Keys
Myonera bicarinata E.A. Smith, 1896 Europe
Cuspidaria bouryi (FOSSIL) A.E.M. Cossmann, 1886 † France, Paris Basin8 mm
Cuspidaria brachyrhynchus R. Sturany, 1899 Red Sea
Plectodon brazieri (E.A. Smith, 1885) Tasmania
Austroneaera brevirostris A.W.B. Powell, 1937 New Zealand
Rhinoclama brevirostris A.W.B. Powell, 1937 New Zealand
Austroneaera brooki (B.A. Marshall, 2002) New Zealand, Kermadec Islands
Cardiomya bruuni R.K. Dell, 1956 New Zealand
Cuspidaria buccina F.R. Bernard, 1989
Cardiomya cadiziana M. Huber, 2010 Portugal
Rengea caduca (E.A. Smith, 1894) China, Zhejiang33 mm
Myonera canariensis (T.W. De Boer, 1985) Europe
Leiomya cancellata (FOSSIL) (J.B.P.A. Lamarck,1806 †) France, Paris Basin
Cuspidaria capensis (E.A. Smith, 1885) Europe
Cardiomya casta (R.B. Hinds, 1843)
Cuspidaria centobi (P. Bouchet & A. Warén,1979) Norvegian Sea
Luzonia chilensis (W.H. Dall, 1890) Chile South
Cuspidaria chinensis (J.E. Gray in E. Griffith& E. Pidgeon, 1833) Japan, Kii24,1 mm
Cardiomya chuni (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Cuspidaria circinata (J.G. Jeffreys, 1876) Portugal4 mm
Soyomya clathrata (J. Poutiers& F.R. Bernard, 1995) New Caledonia
Cardiomya cleryana (A.V.M.D. D'Orbigny,1842) Uruguay13 mm
Austroneaera coanscotti M. Huber, 2010
Cuspidaria cochinensis H.B. Preston, 1916
Cuspidaria cochlearella (FOSSIL) (G.P. Deshayes, 1824 †) France, Paris Basin4 mm
Cuspidaria concentrica K.H.J. Thiele, 1912 Antarctica
Cardiomya concinna (R.B. Hinds, 1843)
Cuspidaria contracta (J.G. Jeffreys, 1882) Portugal
Cuspidaria convexa J.P.L. Pelseneer, 1911 China Japan
Cuspidaria corrugata B. Prashad, 1932 Philippines, Aliguay Island29 mm
Cardiomya costata (G.B. I Sowerby, 1834) Costa Rica
Cardiomya costellata (G.P. Deshayes, 1835) Bermuda11 mm