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Page last updated
Wed 1 October 2025

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!

Search the database pages:

Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Nephronaias calamitarum

Specimen UF_93201: Images
     Nephronaias calamitarum (Morelet, 1849), Rio Blanco, nr. Livingston, Izabel Prov., Guatemala

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