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nominal species Quadrula parkeri Geiser, 1911

Quadrula parkeri Geiser, 1911 = Quadrula verrucosa

Geiser, 1911. The Academician 1: 15.

Taxonomic Opinions

+ Tritogonia verrucosa (Rafinesque, 1820) — Lopes-Lima et al., 2019: 8 [Suppl. Appendix 2].

+ Tritogonia verrucosa (Rafinesque, 1820) — Watters et al., 2009: 306.

+ Quadrula verrucosa (Rafinesque, 1820) — Williams et al., 2008: 696.

+ Tritogonia verrucosa (Rafinesque, 1820) — Parmalee & Bogan, 1998: 234.

+ Tritogonia verrucosa (Rafinesque, 1820) — Haas, 1969: 267.

+ Quadrula (Tritogonia) verrucosa (Rafinesque, 1820) — Frierson, 1927: 48.

+ Tritogonia tuberculata (Barnes, 1823) — Simpson, 1914: 320.