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Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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

nominal species Unio digitatus Morelet, 1851

= Megalonaias nickliniana

Taxonomic Opinions

+ Megalonaias nervosa (Rafinesque, 1820) — Pfeiffer et al., 2018

= Megalonaias digitata Morelet, 1851 — Contreras-Arquieta, 2000

= Megalonaias nickliniana digitata (Morelet, 1851) — Haas, 1969

= Amblema digitata (Morelet, 1849) — Goodrich & van der Schalie, 1937

= Crenodonta digitata (Morelet) — Haas, 1929

= Amblema (Megalonaias) nickliniana-digitata (Morelet, 1851) — Frierson, 1927

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1914

= Quadrula (sec. Crenodonta) digitata (Morelet, 1851) — Simpson, 1900

= Unio (Crenodonta) digitatus Morelet, 1851 — Martens, 1900

= Unio (Plectomerus) digitatus Morelet, 1851 — Fischer & Crosse, 1894

= Unio digitatus More. — B.H. Wright, 1888

+ — Lea, 1870

+ — Lea, 1852