Genus Hippopus J. B. P. A. de Lamarck, 1799

(3-4-4-0-25-1-0-16-0-0-0-0-0)
Ref. Abbott & Dance, 1982 p 333
Lindner, 1977 p 110
Syn. Cerceis J. Gistl, 1848;
Pelvis Megerle v Muhlfeld, 1811
Ref. Vaught, 1989 p 130
Syn. Hippopes Desmarest, 1859;
Pelvis Megerle v Muhlfeld, 1811
Ref. Vokes, 1980 p 134

hippopus (C. v Linne, 1758)
(3-4-4-0-25-1-0-16-0-1-0-0-0)
Bear Paw Clam, Bear's Paw Clam, Horse Shoe
Ref. Abbott & Dance, 1982 p 333 c
Lindner, 1977 pl 59 c

porcellanus J. Rosewater, 1982
(3-4-4-0-25-1-0-16-0-2-0-0-0)
China Clam
Ref. Abbott & Dance, 1982 p 333 c