Subgenus (Keenaea) T. Habe, 1951 [1952]

(3-5-4-0-4-2-5-18-4-0-0-0-0)
Ref. Abbott, 1974 p 485
Bernard, 1983 p 38
Vaught, 1989 p 129

centifilosum (P. P. Carpenter, 1864) [(1846)]
(3-5-4-0-4-2-5-18-4-1-0-0-0)
Hundred-line Cockle, Hundred-lined Cockle
Ref. Amer. Fish. Soc., 1988 p 39
Syn. Nemocardium (Nemocardium) richardsonii (J. F. Whiteaves, 1878)
Ref. Abbott, 1974 p 485 d
Syn. Cardium (Cardium) richardsoni J. F. Whiteaves, 1878
Ref. Bernard, 1983 p 38

samarangae J. Makiyama, 1934 [T]
(3-5-4-0-4-2-5-18-4-2-0-0-0)
Ref. Abbott, 1974 p 485