MUSSELpdb

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Unionidae

Margaritiferidae

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Species & Genus Richness by
Taxonomy

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North America

Central America

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Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Elliptio crassidens

nominal species Unio (Elliptio) nigra var. maculata Rafinesque, 1820

= Elliptio crassidens

Taxonomic Opinions

+ Elliptio crassidens (Lamarck, 1819) — Watters et al., 2009

+ Elliptio crassidens (Lamarck, 1819) — Williams et al., 2008

+ Elliptio crassidens Lamarck, 1819 — Parmalee & Bogan, 1998

+ Fusconaia subrotunda (Lea, 1831) — R.I. Johnson, 1980

+ Elliptio (s.s.) niger (Rafinesque, 1820) — Frierson, 1927

+ — Vanatta, 1915

= Unio (Elliptio) nigra var. maculata — Rafinesque, 1820