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 | ... | Unioninae | Unionini | Unio crassus nominal species Unio requieni Rossmässler, 1844 ‘Mich.’ Rossmässler, 1844. Icon. Land- und Süssw.-Moll. 2 (6): 29, pl. 57, fig. 757-761.
(misidentified reference to Unio requienii Michaud, 1831) = Unio crassus Taxonomic Opinions= Unio (sec. Lymnium) batavus var. requieni Rossmässler, 1844 — Simpson, 1914 + Unio (sec. Lymnium) batavus (Maton & Rackett, 1807) — Simpson, 1900 + Unio meretricis ‘Bgt.’ Loc. 1882 — Westerlund, 1890 + Unio subtilis Drouët — Drouët, 1889 + Margaron (Unio) pictorum (Retz.) — Lea, 1870 + Unio requienii Michaud — Küster, 1855
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