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Taxonomy

all genera

Summary

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness of
freshwater mussels
by Taxonomy


Species & Genus Richness of
freshwater bivalves
by Family

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia


Species Richness & Endemism of
freshwater mussels
by Geography


Data last updated
Fri 13 February 2026

Bivalvia | Sphaeriida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Euglesa obtusalis

nominal species Pisidium obtusale Brown, 1831

Pisidium obtusale Brown, 1831 = Euglesa obtusalis

Brown, 1831. Edinb. J. Nat. & Geogr. 4: 412.
(reference to Cyclas obtusalis Lamarck, 1818)

Taxonomic Opinions

+ Cyclas gibba — Alder, 1831: 41.

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