nominal species Unio lazarus Sowerby, 1868
‘Lea’ Sowerby, 1868, Conch. Icon. 16: pl. 68, sp. 348.
(misidentified reference to Unio lazarus Lea, 1852)
= Elliptio arca Taxonomic Opinions
+ Elliptio arca (Conrad, 1834) — (Parmalee & Bogan, 1998)
+ Elliptio (s.s.) complanata (Lightfoot, 1786) — (Burch, 1975)
+ Elliptio (s.s.) complanata (Lightfoot, 1786) — (R.I. Johnson, 1970)
+ Elliptio (Eurynaia [sic]) dilatatus (Rafinesque, 1820) — (Frierson, 1927)
+ Unio (sec. Elliptio) gibbosus var. subgibbosus Lea, 1857 — (Simpson, 1914)
+ Unio (sec. Elliptio) gibbosus var. subgibbosus Lea, 1857 — (Simpson, 1900)
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