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 | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Sphaerium occidentale nominal species Cyclas ovalis Prime, 1853 Prime, 1853. Proc. Boston Soc. Nat. Hist. 4: 276.
(homonym of Cyclas ovalis Férussac, 1807; renamed Cyclas occidentale Lewis, 1856) = Sphaerium occidentale Taxonomic Opinions+ Sphaerium (Herringtonium) occidentale (“Prime” Lewis, 1856) — Burch, 1975 + Sphaerium (Herringtonium) occidentale (Prime in Lewis, 1856) — Clarke, 1973 + Sphaerium occidentale Prime, 1860 — Herrington, 1962 + Sphærium occidentale Prime — Prime, 1870 + Sphærium occidentale Prime — Prime, 1865 = Cyclas ovalis Nobis — Prime, 1853
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