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MUSSELpdb

Taxonomy

Margaritiferidae

Species & Genus Richness by
Taxonomy

Geography

Central America

Species Richness & Endemism by
Geography

Data last updated
Thu 18 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Pleurobema

species Pleurobema stewardi (White, 1876): synonymy

Synonymy

Unio stewardi White, 1876

White, 1876. Geol. Uinta Mts.: 93.

Unio stewardi — Henderson (1935), Branson (1935), Yen (1952), Good (2004)
Obliquata stewardi — Modell (1957)
“Unio” stewardi — Evanoff et al. (1998)

Unio stewardi utahensis Yen, 1952

Yen, 1952. U.S. Geol. Surv. Prof. Pap. 233-B: 36, pl. 3, figs. 3a-e.
(intro'd as intra-sp. of Unio stewardi White, 1876)

Unio stewardi utahensis — Yen (1952)
“Unio” stewardi utahensis — Evanoff et al. (1998)

Taxonomic History (since 1900)

Unio stewardi — Henderson (1935), Branson (1935), Yen (1952), Good (2004)
Unio stewardi utahensis — Yen (1952)
Obliquata stewardi — Modell (1957)
“Unio” stewardi — Evanoff et al. (1998)
“Unio” stewardi utahensis — Evanoff et al. (1998)

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