Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Ortmanniana ligamentina nominal species Mya gravis Wood, 1828
Wood, 1828, Suppl. Index Testac.: 3, pl. 1, sp. 6.
Hanley in Wood & Hanley, 1856, Index Testac.: 199, pl. 1, fig. 6.
= Ortmanniana ligamentina Taxonomic Opinions
+ Actinonaias ligamentina (Lamarck, 1819) — Williams et al., 2008
+ Actinonaias ligamentina (Lamarck, 1819) — Parmalee & Bogan, 1998
+ Lampsilis (Ortmanniana) carinata carinata (Barnes, 1823) — Haas, 1969
+ Lampsilis (Ortmanniana) carinata (Barnes, 1823) — Frierson, 1927
+ Lampsilis (Eurynia) ligamentina (Lamarck, 1819) — Simpson, 1914
+ Lampsilis (sec. Eurynia) ligamentinus Lamarck — Simpson, 1900
+ Margaron (Unio) ligamentinus (Lam.) — Lea, 1870
+ Unio crassus Say — Sowerby, 1866
+ Margaron (Unio) ligamentinus (Lam.) — Lea, 1852
+ Unio crassus Say — Hanley, 1843
+ Margarita (Unio) crassus Say. Bar. — Lea, 1838
+ Margarita (Unio) crassus (Say, 1817) — Lea, 1836
+ Unio crassus Say, Raf. — Ferussac, 1835
= Mya gravis Wood, 1828 — Wood, 1828
+ Unio cariosus Say, 1817 — Wood, 1828
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