 In 2003, Russian palaeoentomologists G. M. Dlussky and E. B. Perfilieva separated "Nothomyrmecia" from "Prionomyrmex" on the basis of the fusion of an abdominal segment.In the same year, American entomologists P. S. Ward and S. G. Brady reached the same conclusion as Dlussky and Perfilieva and provided strong support for the monophyly of "Prionomyrmex".Ward and Brady also transferred both taxa as distinct genera in the older subfamily Myrmeciinae under the tribe Prionomyrmecini.