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Unionidae
Margaritiferidae
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Species & Genus Richness offreshwater musselsby Taxonomy
Species & Genus Richness offreshwater bivalves by Family
North America
Central America
South America
Afrotropics
North Eurasia
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Australasia
Species Richness & Endemism offreshwater mussels by Geography
Data last updated Mon 2 March 2026
Baker, F.C. 1906. A new Sphaerium from Illinois. Nautilus 20(2): 21-22. Available electronically.
Baker, 1906. Nautilus 20(2): 21.(intro'd as intra-sp. of Cyclas staminea Conrad, 1834; homonym of Cyclas forbesi Philippi, 1869)