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Page last updated
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!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Quadrulini

genus Uniomerus Conrad, 1853: synonymy
     4 Recent valid species (5 total species)

Uniomerus Conrad, 1853
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 268.
(intro'd as sub-gen. of Unio Retzius, 1788)
Type species: Unio declivis Say, 1831 (sub. desig. by Frierson, 1927: 34, 10) = Uniomerus declivis

Uniomeris Tryon, 1884
Tryon, 1884. Struct. Syst. Conch. 3: 238.
(error for Uniomerus Conrad, 1853)

Unionerus Utterback, 1915
Utterback, 1915. Amer. Midl. Nat. 4(3): ??.
(error for Uniomerus Conrad, 1853)

Taxonomic History (since 1900)

Unio (sec. Elliptio)Simpson (1900), Simpson (1914)
Unio (sec. Uniomerus)Simpson (1900), Simpson (1914)
Unio (Uniomerus)Martens (1900)
Unio (s.s.)Call (1900)
UniomerusOrtmann (1912), Utterback (1915), F.C. Baker (1928), Clench & Turner (1956), Murray & Leonard (1962), ... Wu et al. (2024), Dai et al. (2025), Chen et al. (2025), FMCS (2025), Cummings et al. (2025)
Uniode Gregorio (1914)
Elliptio (Uniomerus)Frierson (1927), Haas (1929)
Elliptio (sec. Uniomerus)Thiele (1934)
U.Marshall et al. (2018)

 
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