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Species & Genus Richness offreshwater musselsby Taxonomy
Species & Genus Richness offreshwater bivalves by Family
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Species Richness & Endemism offreshwater mussels by Geography
Data last updated Wed 04 February 2026
Bivalvia | Venerida | Cyrenoidea | Cyrenoididae | Polymesoda floridana
Sowerby, 1878. Conch. Icon. 20: pl. 19, fig. 108.
= Polymesoda floridana
+ Cyrena (Pseudocyrena) floridana Conrad, 1846 — Dall, 1903