Subgenus (Dinocardium) W. H. Dall, 1900 ?

(3-5-4-0-4-2-4-16-2-0-0-0-0)
Ref. Lindner, 1977 p 110
Vaught, 1989 p 129
[see also as Genus]

robustum (J. Lightfoot, 1786)
(3-5-4-0-4-2-4-16-2-1-0-0-0)

robustum (J. Lightfoot, 1786)
(3-5-4-0-4-2-4-16-2-1-1-0-0)

vanhyningi (W. J. Clench & L. C. Smith, 1944)
(3-5-4-0-4-2-4-16-2-1-2-0-0)
Greant Heart Cockle
Ref. Lindner, 1977 pl 60 c