Genus Mexicardia R. B. Stewart, 1930

(3-5-4-0-4-2-6-5-0-0-0-0-0)
Ref. Vokes, 1980 p 127
[see also as Subgenus under Genus Trachycardium]
Ref. Abbott, 1974 p 484
Keen, 1971 p 155