| Page last updated
Thu 3 September 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!
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Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Sphenonaias opacata Specimen USNM_1282316-17: Images
Sphenonaias opacata (Crosse & Fischer, 1894), Veracruz, Rio Blanco at Rt. Mexico. 145 ca. 1.5 roadmiles S of divergence of Rt. Mex. 150 and Rt. Mex. 145 in La Tinaja (on Veracruz-Cordoba highway) 
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