Unionoida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Megalonaias nervosa nominal species Unio atrocostatus Sowerby, 1868
‘Lea’ Sowerby, 1868, Conch. Icon. 16: pl. 77, sp. 404.
(misidentified reference to Unio atrocostatus Lea, 1845)
= Megalonaias nervosa Taxonomic Opinions
+ Amblema (s.s.) plicata-costata Rafinesque, 1820 — Frierson, 1927
+ Quadrula (sec. Crenodonta) undulata (Barnes, 1823) — Simpson, 1914
+ Quadrula (sec. Crenodonta) undulata (Barnes, 1823) — Simpson, 1900
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