Atopomesus Myers, 1927

Géry (1977) mentioned that this genus has seven aligned and strong premaxillary teeth; that author included this genus in his Aphyoditeina, without any phylogenetic analysis. Although the relatively high number of premaxillary teeth is rather similar to one of the synapomorphies of the Aphyoditeinae (eight or more premaxillary teeth), the teeth in members of this subfamily are slender and small. Therefore, it is preferable to leave Atopomesus as incertae sedis within the Characidae pending further analysis.