Genus Pachydesma T. A. Conrad, 1854

(3-4-4-0-26-7-9-25-0-0-0-0-0)
Syn. Pachydusa J. Hall, 1867
Ref. Vokes, 1980 p 169
[see also as Subgenus under Genus Tivela]
Ref. Abbott, 1974 p 529