placidus, Noturus Taylor [W. R.] 1969:168, Pls. 4 (fig. 9), 15 (fig. 2), 17 (fig. 2) [Bulletin of the United States National Museum No. 282; ref. 6555] Neosho River, just south of U.S. highway 50, near Emporia, Lyon County, Kansas, U.S.A. Holotype: UMMZ 167653. Paratypes: KU (273 in 11 lots); Univ. of Tulsa (3 in 2 lots); UMMZ 167654 (27, 1 c&s), 167655-57 (15, 4, 2) (plus 2 more lots); USNM 200677 (38), 200679 (8). Type catalog: Ferraris & Vari 1992:22 [ref. 19771], Gilbert 1998:223 [ref. 23395], Ferraris 2007:214 [ref. 29155]. •Valid as Noturus placidus Taylor 1969 -- (Lee et al. 1980:468 [ref. 22416], Burgess 1989:34 [ref. 12860], Page & Burr 1991:206 [ref. 18983], Cross & Collins 1995:158 [ref. 23394], Gilbert 1998:223 [ref. 23395], Nelson et al. 2004:82 [ref. 27807], Miller & Robison 2004:246 [ref. 27931], Scharpf 2006:18 [ref. 30386], Ferraris 2007:214 [ref. 29155], Page & Burr 2011:362 [ref. 31215], Page et al. 2013:84 [ref. 32708], Page et al. 2023:80 [ref. 40505]). Current status: Valid as Noturus placidus Taylor 1969. Ictaluridae. Distribution: North America: Kansas, Missouri and Oklahoma (central U.S.A.). Habitat: freshwater.