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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Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina | Pressodonta viridis

nominal species Alasmidonta marginata Say, 1834

Say, 1834, Amer. Conch. 6: ??.
(misidentified reference to Alasmidonta marginata Say, 1818)

= Pressodonta viridis

Taxonomic Opinions

+ Alasmidonta (Pressodonta) calceola (Lea, 1828) — Frierson, 1927
+ Alasmidonta (Rugifera) marginata Say, 1819 — Simpson, 1900
+ Margaron (Margaritana) calceola (Lea) — Lea, 1870
+ Unio calceolus Lea — Ferussac, 1835

Page updated: 08:16:40 Tue 01 Jul 2025