Genus Plagioctenium W. H. Dall, 1898

(3-7-8-3-4-10-2-28-0-0-0-0-0)
[=Argopecten T. A. Monterosato, 1889]
Ref. Abbott, 1974 p 447
Keen, 1971 p 87
[see as it applies to Subgenus (Argopecten) under Genus Chlamys]