Hybognathus Agassiz [L.] 1855:223 Masc. Hybognathus nuchalis Agassiz 1855. Type by original designation (also monotypic). •Valid as Hybognathus Agassiz 1855 -- (Cook et al. 1992 [ref. 19894], Jenkins & Burkhead 1994:446 [ref. 21581], Schmidt 1994:622 [ref. 22424], Gilbert 1998:17 [ref. 23395]). Current status: Valid as Hybognathus Agassiz 1855. Leuciscidae: Pogonichthyinae.