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Summary
Unionidae
Margaritiferidae
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Etheriidae
Mycetopodidae
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
Bivalvia | Trigoniida
1 family
Modell, 1942. Arch. Moll. 74(5/6): 179.Modell, 1964. Arch. Moll. 93: 79.Type genus: Trigonodus Alberti, 1864 = Trigonodus
Cox, 1961. Proc. Malac. Soc. London 34(6): ??.Type genus: Pachycardia Hauer, 1857 = Pachycardia