 Genetic evidence suggests that Myrmecia diverged from related groups approximately 100 million years ago . The subfamily Myrmeciinae to which Myrmecia belongs , is believed to have been found in the fossil record of 110 million years ago . However , one study suggests that the age of the most recent common ancestor for Myrmecia and Nothomyrmecia is 74 million years ago , and the subfamily is possibly younger than previously thought . Ants of the extinct genus Archimyrmex may possibly be the ancestor of Myrmecia . In the Evans ' vespoid scala , Myrmecia and other primitive ant genera such as Amblyopone and Nothomyrmecia exhibit behaviour which is similar to a clade of soil @-@ dwelling families of vespoid wasps . Four species groups form a paraphyletic assemblage while five species groups form a monophyletic assemblage . The following cladogram shows the phylogenetic relationships within Myrmecia : 
