phlegethontis, Clinostomus Cope [E. D.] 1874:137 [9] [Proceedings of the American Philosophical Society v. 14; ref. 932] Beaver River, Beaver County, Utah, U.S.A. Holotype (unique): USNM 16983. Type catalog: Böhlke 1984:86 [ref. 13621], Gilbert 1998:132 [ref. 23395]. On p. 9 of separate. •Valid as Iotichthys phlegethontis (Cope 1874) -- (Lee et al. 1980:198 [ref. 22416], Page & Burr 1991:80 [ref. 18983], Sigler & Sigler 1996:90 [ref. 25943], Gilbert 1998:132 [ref. 23395], Fuller et al. 1999:84 [ref. 25838], Nelson et al. 2004:72 [ref. 27807], Scharpf 2005:21 [ref. 28940], Page & Burr 2011:177 [ref. 31215], Page et al. 2013:72 [ref. 32708], Page et al. 2023:71 [ref. 40505]). Current status: Valid as Iotichthys phlegethontis (Cope 1874). Leuciscidae: Pogonichthyinae. Distribution: North America: northern Utah (U.S.A.). Habitat: freshwater.