Atopomesus Myers [G. S.] 1927:112 Masc. Atopomesus pachyodus Myers 1927. Type by original designation (also monotypic). •Valid as Atopomesus Myers 1927 -- (Géry 1977:587 [ref. 1597], Malabarba 1998:231 [ref. 23844], Malabarba in Reis et al. 2003:113 [ref. 27061], Mirande 2009:11 [ref. 30267] as incertae sedis in Characidae, Mirande 2010:545 [ref. 31006], Esguícero & Castro 2016:241 [ref. 34949], Melo et al. 2024:16 [ref. 41541] in Characinae). Current status: Valid as Atopomesus Myers 1927. Characidae: Characinae.