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9 August

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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 search fields. Either way, you win!

Taxa known only as fossils are highlighted in gray. Those without representatives in fresh waters are highlighted in gold.



Bivalvia | Unionoida | Unionidae | Sphenonaias | Sphenonaias callosa

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Unio callosus Lea, 1841: taxonomic history

Lea, 1841, Proc. Amer. Phil. Soc.: 31.
Lea, 1842, Trans. Amer. Phil. Soc.: 239 [77], pl. 23, fig. 54.

Type(s): HOLOTYPE AMNH_30561, Ohio Canal, 12 mi below Columbus, Franklin Co., Ohio.

Taxonomic History
=Sphenonaias callosa (Lea, 1841). — Graf & Cummings (2007: 309).
?Nephronaias (Sphenonaias) mexicana (Philippi, 1847). — Haas (1969: 206).
=Elliptio (Sphenonaias) callosus (Lea, 1841). — Frierson (1927: 37).
=Unio (sec. Elliptio) callosus Lea, 1841. — Simpson (1914: 587).
=Unio (sec. Elliptio) callosus Lea, 1841. — Simpson (1900: 701).
=Margaron (Unio) callosus (Lea). — Lea (1870: 42).
=Unio (NiƤa) callosus Lea. — Adams & Adams (1857: 492).
=Unio callosus Lea, 1841. — Conrad (1853: 246).
=Margaron (Unio) callosus (Lea). — Lea (1852: 33).

= Sphenonaias callosa

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