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nominal species Unio (Obovaria) syntoxis Rafinesque, 1819

Unio (Obovaria) syntoxis Rafinesque, 1819 = Pleurobema sintoxia

Rafinesque, 1819. Jour. Phys. Chim. Hist. Nat. 88: 427. [nomen nudum]
Rafinesque, 1864. [in] Binney & Tryon, reprint: 29.
(incorrect original spelling of Obliquaria (Sintoxia) sintoxia Rafinesque, 1820)

= Pleurobema sintoxia

Taxonomic Opinions

+ Fusconaia subrotunda (Lea, 1831) — Haas, 1969

= Unio (Obovaria) syntoxis — Rafinesque, 1819