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Unionidae
Margaritiferidae
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Iridinidae
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 Mon 2 March 2026
Bivalvia | Anomalodesmata | Thracioidea
2 genera
Dall, 1895. Trans. Wagner Free Inst. 3(3): 531.Type genus: Periploma Schumacher, 1817 = Periploma