MUSSELp

MUSSELpdb

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Taxonomy

all genera

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
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Geography

Summary

North America

Central America

South America

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Species Richness & Endemism by
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Data last updated
Mon 1 Dec 2025

nominal species Pisidium demissum Clessin, 1874

Pisidium demissum Clessin, 1874 =

Clessin, 1874. Bull. Soc. Vaud. Sci. Nat. 13: 149. [nomen nudum]
Clessin, 1877. Conch. Cab. 9(3): 71, pl, 8, figs. 19-21.

=

Taxonomic Opinions

= Pisidium (Gruppe Fossarina) demissum Clessin — Clessin, 1877

= Pisidium demissum sp. nov. — Clessin, 1874

 
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