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 | Veneroida | Cyrenoidea | Cyrenoididae | Polymesoda arctata nominal species Cyrena regalis Prime, 1865  Prime, 1865. Smithsonian Misc. Coll. (145): 18, fig. 13.
= Polymesoda arctata Taxonomic Opinions+ Polymesoda arctata (Deshayes, 1854) — WoRMS, 2012 = Cyanocyclas regalis (Prime, 1865) — Simone, 2006 = Cyrena regalis Prime — Prime, 1895 = Cyrena regalis Prime — Clessin, 1877 = Cyrena regalis Prime — Prime, 1865
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