Genus Planitrochus Perner, 1903

(5-4-1-3-2-11-9-1-0-0-0-0-0)
Ref. Abbott, 1974 p 39
Vaught, 1989 p 8

amicus Perner, 1903 [T] [f]
(5-4-1-3-2-11-9-1-1-0-0-0-0)
Ref. Abbott, 1974 p 39

disculus (W. H. Dall, 1889)
(5-4-1-3-2-11-9-1-2-0-0-0-0)
Ref. Abbott, 1974 p 39