Exodon Müller [J.] & Troschel [F. H.] 1844:91 Masc. Exodon paradoxus Müller & Troschel 1844. Type by monotypy. Also appeared as new in Müller & Troschel 1845:16 [ref. 3071]. Also as new in Müller & Troschel 1848:634 [ref. 3972]. Apparently not preoccupied, Hystricodon Günther 1864 is an unneeded replacement. •Valid as Exodon Müller & Troschel 1844 -- (Géry 1977:318 [ref. 1597], Lucena in Reis et al. 2003:127 [ref. 27061], Mirande 2009:7 [ref. 30267] in Characidae, Characinae with question, Mirande 2010:490 [ref. 31006], Oliveira et al. 2011:15 [ref. 31685] unplaced in Characidae, Melo et al. 2024:15 [ref. 41541] in Exodontinae). Current status: Valid as Exodon Müller & Troschel 1844. Characidae: Exodontinae.