collapsus, Ptychostomus Cope [E. D.] 1870:471 [Proceedings of the American Philosophical Society v. 11 (no. 84); ref. 913] Neuse River, North Carolina, U.S.A. Lectotype: ANSP 6949. Paralectotypes: ANSP 6950 (1). Type catalog: Böhlke 1984:35 [ref. 13621], Gilbert 1998:177 [ref. 23395]. Lectotype selected by Fowler 1913: 57 [ref. 1388]. •Synonym of Moxostoma anisurum (Rafinesque 1820) -- (authors). •Valid as Moxostoma collapsum (Cope 1870) -- (Gilbert 1998:177 [ref. 23395], Nelson et al. 2004:79 [ref. 27807], Scharpf 2006:11 [ref. 30386], Page & Burr 2011:333 [ref. 31215], Page et al. 2013:80 [ref. 32708], Page et al. 2023:65 [ref. 40505]). Current status: Valid as Moxostoma collapsum (Cope 1870). Catostomidae: Catostominae. Distribution: North America: Atlantic Slope, Virginia to Georgia (U.S.A.). Habitat: freshwater.