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Introduction
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d'basing
all genera
Unionidae
Margaritiferidae
Hyriidae
Etheriidae
Mycetopodidae
Iridinidae
Species & Genus Richness by Taxonomy
Summary
North America
Central America
South America
Afrotropics
North Eurasia
East Asia
Australasia
Species Richness & Endemism by Geography
Data last updated Sat 10 January 2026
Clark. 1911. MD Geol. Surv..
Clark, 1911. MD Geol. Surv.: 213, pl. 21, fig. 7.