Cyclocardia abesinaiensis (FOSSIL) Y. Otuka, 1940 †
Cyclocardia akagii (FOSSIL) K. Kanehara, 1937 †
Cyclocardia amaninensis (FOSSIL) L. Krishtofovich, 1947 †
Cyclocardia aomoriensis (FOSSIL) K. Chinzei, 1968 †
Cyclocardia astartoides (E.C. Von Martens, 1878)
Cyclocardia awamoensis (FOSSIL) (G.F. Harris, 1897 †)
Cyclocardia bailyi (J.Q. Burch, 1944)
Cyclocardia barbarensis R.E.C. Stearns, 1890
Cyclocardia beebei (L.G. Hertlein, 1958)
Cyclocardia belogolovensis (FOSSIL) (Ilyina, 1962 †)
Cyclocardia beringiana (FOSSIL) (Slodkewitsch, 1936 †)
Cyclocardia bernardi (FOSSIL) Renard, 1994 †
Cyclocardia borealis (T.A. Conrad, 1832)
Cyclocardia californica (FOSSIL) W.H. Dall, 1903 †
Cyclocardia calva R. Tate, 1887
Cyclocardia castor (FOSSIL) (W.H. Dall †)
Cyclocardia castrana (FOSSIL) L.C. Glenn, 1904 †
Cyclocardia caumontensis (FOSSIL) (Deshayes) †
Cyclocardia caumontiensis (FOSSIL) (G.P. Deshayes, 1858 †)
Cyclocardia christiei (FOSSIL) J. Marwick, 1929 †
Cyclocardia compressa (L.A. Reeve, 1843)
Cyclocardia congelascens (J.C. Melvill & R. Standen,1912)
Cyclocardia crassidens (W.J. Broderip& G.B. I Sowerby, 1829)
Cyclocardia crebricostata A. Krause, 1885
Cyclocardia dodairensis (FOSSIL) K.M. Hatai & S. Nisiyama,1952 †
Cyclocardia etolonnensis (FOSSIL) (Slodkewitsch, 1936 †)
Cyclocardia expansa (FOSSIL) (H. Takeda, 1953 †)
Cyclocardia ezoensis (FOSSIL) (H. Takeda, 1953 †)
Cyclocardia gouldii (W.H. Dall, 1903)
Cyclocardia granulata (FOSSIL) (T. Say, 1824 †)
Cyclocardia hamiltonensis (FOSSIL) (Clark, 1932 †)
Cyclocardia harukii (FOSSIL) K. Oyama & A. Mizuno,1958 †
Cyclocardia incisa (W.H. Dall, 1903)
Cyclocardia isaotakii (R. Tiba, 1972)
Cyclocardia kavranensis (FOSSIL) (Slodkewitsch, 1938 †)