Genus Norrisia E. Bayle, 1880

(5-4-1-3-2-11-4-12-0-0-0-0-0)
Ref. Abbott, 1974 p 49
Abbott & Dance, 1982 p 43
Amer. Fish. Soc., 1988 p 56
Lindner, 1977 p 36
Syn. Trochiscus G. B. Sowerby, 1838, not Heyden, 1826
Ref. Vaught, 1989 p 9

norrisi (G. B. Sowerby, 1838) [T]
(5-4-1-3-2-11-4-12-0-1-0-0-0)
Norris Shell, Norrissnail
Ref. Abbott, 1974 p 49 bw
Abbott & Dance, 1982 p 43 c
Amer. Fish. Soc., 1988 p 56