Mordacia Gray [J. E.] 1851:143 Fem. Petromyzon mordax Richardson 1846. Type by monotypy. Also appeared in Gray 1853 [for 1851]:239 [ref. 1886]. First reviser selecting Mordacia over Caragola not researched by us. •Valid as Mordacia Gray 1851 -- (Hubbs & Potter 1971:56 [ref. 13397], Pequeño 1989:6 [ref. 14125], Gomon et al. 1994:83 [ref. 22532], Dyer 2000:84 [ref. 26678], Kullander & Fernholm in Reis et al. 2003:12 [ref. 27061], Gill et al. 2003:693 [ref. 27254], Paxton et al. 2006:44 [ref. 28994], Gomon 2008:29 [ref. 30616], Lang et al. 2009:43 [ref. 31599], Renaud 2011:19 [ref. 31770], Kuiter 2018:8 [ref. 36369]). Current status: Valid as Mordacia Gray 1851. Mordaciidae.