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nominal species Unio primaevus White, 1877

Unio primaevus White, 1877 = Quadrula primaevus

White, 1877. Bull. Hayden Surv. 3: 599.

= Quadrula primaevus

Taxonomic Opinions

= Orthonymus primaevus (White, 1877) — Modell, 1957

= Unio primaevus White — Henderson, 1935

= Quadrula primaevus (White) — Russell, 1934