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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 | Unionida | Unionoidea | Unionidae | Unioninae | Anodontini | Cristariina

genus Simpsonella Cockerell, 1903: synonymy
     2 Recent valid species (2 total species)

Dalliella Simpson, 1900
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 832.
(homonym of Cossmann, 1895 [Gastro.]; renamed Simpsonella Cockerell, 1903)
Type species: Anodonta purpurea Valenciennes, 1827 (orig. desig.) = Simpsonella burroughiana

Simpsonella Cockerell, 1903
Cockerell, 1903. Nautilus 16: 118.
(new name for Dalliella Simpson, 1900)

Daliela Preston, 1912
Preston, 1912. Rec. Ind. Mus. 7: 294.
(error for Dalliella Simpson, 1900)

Simponella Haas, 1914
Haas, 1914. Conch. Cab. 9 (pt. 2, h. 50): 220.
(error for Simpsonella Cockerell, 1903)

Taxonomic History (since 1900)

DalliellaSimpson (1900), Preston (1912)
SimpsonellaSimpson (1914), Haas (1914), Haas (1919), Haas (1924), Thiele (1934), ... Bogan (2010), Zieritz et al. (2018), Zieritz et al. (2018), Graf & Cummings (2021), Sahidin et al. (2021)

 
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