Subgenus (Cyclocardia) T. A. Conrad, 1867

(3-4-4-0-5-1-1-23-1-0-0-0-0)
Ref. Bernard, 1983 p 34
Bernard, 1984 p 40

alaskana W. H. Dall, 1903
(3-4-4-0-5-1-1-23-1-1-0-0-0)
[=Cyclocardia (Cyclocardia) crebricostata (Krause, 1885)]
Ref. Abbott & Dance, 1982 p 325

armilla (W. H. Dall, 1903)
(3-4-4-0-5-1-1-23-1-2-0-0-0)
Bracelet Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38

bailyi (J. Q. Burch, 1944)
(3-4-4-0-5-1-1-23-1-3-0-0-0)
Bumpy Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Cardita (Cardita) longini Baily, 1945;
Cardita (Cyclocardia) bailyi J. Q. Burch, 1944;
Venericardia (Venericardia) nodulosa W. H. Dall, 1916 [not Cardita nodulosa J. B. P. A. de Lamarck, 1819]
Ref. Bernard, 1983 p 34

beebei (L. G. Hertlein, 1958)
(3-4-4-0-5-1-1-23-1-4-0-0-0)
Syn. Cardita (Cardita) spurca beebei L. G. Hertlein, 1958 [not Cardita spurca G. B. Sowerby, 1833]
Ref. Bernard, 1983 p 34

borealis (T. A. Conrad, 1831)
(3-4-4-0-5-1-1-23-1-5-0-0-0)
Northern Cardita, Northern Cyclocardia
Ref. Abbott & Dance, 1982 p 325 c
Amer. Fish. Soc., 1988 p 38
Syn. Cardita (Cardita) borealis T. A. Conrad, 1831
Ref. Wagner, 1984 p 61 bw

compressa (L. A. Reeve, 1843)
(3-4-4-0-5-1-1-23-1-6-0-0-0)
Syn. Cardita (Actinobolus) procera A. A. Gould, 1850;
Cardita (Cardita) compressa L. A. Reeve, 1843
Ref. Bernard, 1983 p 34

crebricostata (Krause, 1885)
(3-4-4-0-5-1-1-23-1-7-0-0-0)
Fine-ribbed Cardita, Many-rib Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Cyclocardia (Cyclocardia) alaskana W. H. Dall, 1903
Ref. Abbott & Dance 1982 p 325 c
Syn. Cardita (Cardita) beringiana V. C. Slodkevich, 1935;
Cardita (Cardita) borealis authors [not T. A. Conrad, 1831];
Cardita (Cardita) borealis crebricostata Krause, 1885;
Cardita (Cyclocardia) crebricostata nomensis F. S. MacNeil in F. S. MacNeil, J. B. Mertie & H. A. Pilsbry, 1943;
Venericardia (Cyclocardia) alaskana W. H. Dall, 1903
Ref. Bernard, 1983 p 34
Syn. Cardita (Cardita) borealis crebricostata Krause, 1885;
Cyclocardia crebricostata (Krause) in E. V. Coan, 1977;
Venericardia (Cyclocardia) alaskana W. H. Dall, 1903;
Venericardia (Cyclocardia) crebricostata (Krause) in T. Kotaka, 1962;
Venericardia (Venericardia) crebricostata (Krause) in I. S. Oldroyd, 1925
Ref. Bernard, 1984 p 40 bw

gouldii (W. H. Dall, 1903)
(3-4-4-0-5-1-1-23-1-8-0-0-0)
Syn. Venericardia (Cyclocardia) gouldii W. H. Dall, 1903
Ref. Bernard, 1983 p 34

incisa (W. H. Dall, 1903)
(3-4-4-0-5-1-1-23-1-9-0-0-0)
Cut Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Venericardia (Cyclocardia) incisa W. H. Dall, 1903
Ref. Bernard, 1983 p 34

novangliae (E. S. Morse, 1869)
(3-4-4-0-5-1-1-23-1-10-0-0-0)
New England Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38

ovate (Rjabinina, 1952)
(3-4-4-0-5-1-1-23-1-11-0-0-0)
Ovate Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Venericardia (Cyclocardia) borealis ovata Rjabinina, 1952 [not Cardita ovata C. B. Adams, 1845]
Ref. Bernard, 1983 p 34

rjabininae (O. A. Scarlato, 1955)
(3-4-4-0-5-1-1-23-1-12-0-0-0)
Rjabinina Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Actinobolus (Cyclocardia) novangliae authors [not E. S. Morse, 1869];
Venericardia (Venericardia) eximoensis R. Tiba, 1972;
Venericardia (Venericardia) granulata rjabininae O. A. Scarlato, 1955
Ref. Bernard, 1983 p 34

spurca (G. B. Sowerby, 1833)
(3-4-4-0-5-1-1-23-1-13-0-0-0)
Syn. Cardita (Cardita) spurca G. B. Sowerby, 1833
Ref. Bernard, 1983 p 35

umnaka (G. Willett, 1932)
(3-4-4-0-5-1-1-23-1-14-0-0-0)
Umnak Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38

velutinus (E. A. Smith, 1881)
(3-4-4-0-5-1-1-23-1-15-0-0-0)
Syn. Cardita (Actinobolus) velutinus E. A. Smith, 1881
Ref. Bernard, 1983 p 35

ventricosa (A. A. Gould, 1850)
(3-4-4-0-5-1-1-23-1-16-0-0-0)
Stout Cyclocardia
Ref. Amer. Fish. Soc., 1988 p 38
Syn. Cardita (Cardita) ventricosa A. A. Gould, 1850;
Cardita (Cardita) ventricosa redondoensis T. Burch in ex Burch, ms, J. Burch, 1944;
Cardita (Cyclocardia) ventricosa montereyensis Smith & M. Gordon, 1948;
Venericardia (Cyclocardia) stearnsii W. H. Dall, 1903
Ref. Bernard, 1983 p 34