 In 1951, Clark proposed the new ant subfamily Nothomyrmeciinae for his "Nothomyrmecia", based on morphological differences with other ponerine ants.This proposal was rejected by American entomologist William Brown Jr., who placed it in the subfamily Myrmeciinae with "Myrmecia" and "Prionomyrmex", under the tribe Nothomyrmeciini.Its distant relationship with extant ants was confirmed after its rediscovery, and its placement within the Formicidae was accepted by most scientists until the late 1980s.