Genus Protocardia Beyrich, 1845 [f]

(3-5-4-0-4-2-5-22-0-0-0-0-0)
Syn. Protocardium F. Stoliczka, 1871;
Protocardum Meek & F. V. Hayden, 1860;
Protocerdia H. B. Preston, 1921
Ref. Vokes, 1980 p 129

panamensis W. H. Dall, 1908 [not Cardium panamense G. B. Sowerby, 1833]
(3-5-4-0-4-2-5-22-0-1-0-0-0)
[=Microcardium panamensis (W. H. Dall, 1908)]
Ref. Bernard, 1983 p 38

paziana [pazianum] W. H. Dall, 1916
(3-5-4-0-4-2-5-22-0-2-0-0-0)
[=Microcardium pazianum (W. H. Dall, 1916)]
Ref. Bernard, 1983 p 38