| 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 | ... | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio ampulodon Locard, 1889 ‘Coutagne Mss. teste Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22]. [nomen nudum]= Unio crassus Taxonomic Opinions+ Unio mancus var. amnicus Ziegler — Germain, 1931 + Unio (Melasiana) dubisianopsis [sic] Locard — Locard, 1889 |