Genus Megathura H. A. Pilsbry, 1890

(5-4-1-2-1-1-1-9-0-0-0-0-0)
Ref. Abbott & Dance, 1982 p 26
Amer. Fish. Soc., 1988 p 53
Lindner, 1977 p 33
Syn. Macrochasma W. H. Dall, 1915
Ref. Abbott, 1974 p 25
Vaught, 1989 p 6
[see also under Subfamily: FISSURELLINAE]

crenulata (G. B. Sowerby, 1825) [T]
(5-4-1-2-1-1-1-9-0-1-0-0-0)
Giant Keyhole Limpet, Great Keyhole Limpet
Ref. Abbott, 1974 p 25
Abbott & Dance, 1982 p 26 c
Amer. Fish. Soc., 1988 p 53
Kaicher, 1988 #5415 bw
Lindner, 1977 pl 2 c