Eumetabola is an unranked clade of Neoptera. Two large unities known as the Paurometabola and Eumetabola are probably from the adelphotaxa of the Neoptera after exclusion of the Plecoptera. The monophyly of these unities appears to be weakly justified.[1]
Eumetabola has the highest number of species of any clade. According to a phylogenetic analysis, the Eumetabola clade originated 390-350 million years ago, in the Late Devonian.[2]
The phylogeny of Eumetabola is shown in the cladogram according to Kluge 2004, 2010, and 2012:[3][4][5]