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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
East Asia
Australasia
Species Richness & Endemism offreshwater mussels by Geography
Data last updated Fri 13 February 2026
Bartsch, P. 1908. A new fresh-water bivalve (Corneocyclas) from the mountains of Ecuador. Proceedings of the United States National Museum 33: 681-682. Available electronically.
Bartsch, 1908. Proc. U.S. Nat. Mus. 33: 681, text fig.