Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Megalonaias nervosa

nominal species Unio atrocostatus Sowerby, 1868

Unio atrocostatus Sowerby, 1868 = Megalonaias nervosa

specimen image from publication‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 77, sp. 404.
(misidentified reference to Unio atrocostatus Lea, 1845)

Taxonomic Opinions

+ Amblema (s.s.) plicata-costata Rafinesque, 1820 — Frierson, 1927: 61.

+ Quadrula (sec. Crenodonta) undulata (Barnes, 1823) — Simpson, 1914: 821.

+ Quadrula (sec. Crenodonta) undulata (Barnes, 1823) — Simpson, 1900: 769.