| 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 mancus nominal species Unio pictorum var. compressus de Joannis, 1859 = Unio mancus Taxonomic Opinions+ Unio requieni Michaud — Germain, 1931 + Unio (Joannisiana) joannisi Bourguignat in Locard, 1882 — Germain, 1904 + Unio (Joannisiana) joannisi Bourguignat in Locard — Locard, 1889 + Unio (Groupe de l’U. Gallicus) joannisi Bourguignat, 1880, Mss. — Locard, 1882 = Unio pictorum var. compressus Nobis — de Joannis, 1859 |