Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Pleurobema decisum

nominal species Unio scalenius Say, 1834

Unio scalenius Say, 1834 = Pleurobema decisum

Say, 1834. Amer. Conch. 6: ??.
(misidentified reference to Obliquaria (Scalenaria) scalenia Rafinesque, 1820)

Taxonomic Opinions

+ Pleurobema (s.s.) decisus (Lea, 1831) — Frierson, 1927: 41.

+ Pleurobema (s.s.) decisum (Lea, 1831) — Simpson, 1914: 759.

+ Pleurobema (s.s.) decisa (Lea, 1831) — Simpson, 1900: 752.

+ Unio decisus Lea — Ferussac, 1835: 28.