Subgenus (Apiocardia) A. A. Olsson, 1961

(3-5-4-0-4-2-3-25-2-0-0-0-0)
Ref. Abbott, 1974 p 485
Bernard, 1983 p 38
Keen, 1971 p 157
Lindner, 1977 p 110
Vaught, 1989 p 129

obovalis [obovale] (G. B. Sowerby, 1833) [T]
(3-5-4-0-4-2-3-25-2-1-0-0-0)
Ref. Abbott, 1974 p 485
Syn. Cardium (Cardium) obovale G. B. Sowerby, 1833;
Cardium (Cardium) ovuloides L. A. Reeve, 1845;
Cardium (Cardium) spiekeri G. D. Hanna & M. C. Israelsky, 1925;
Hemicardia affinis E. T. Nelson, 1870 [not Cardium affine Munster, 1835]
Ref. Bernard, 1983 p 38
Syn. Cardium (Cardium) ovuloides L. A. Reeve, 1845
Ref. Keen, 1971 p 157 bw