Файл:OrthoMaM v10b 2019 116genera circular tree.svgPhylogenetic position of Euarchontoglires (in blue) among placentals in a genus-level molecular phylogeny of 116 extant mammals inferred from the gene tree information of 14,509 coding DNA sequences.[1] The other major clades are colored: marsupials (magenta), xenarthrans (orange), afrotherians (red), and laurasiatherians (green).
The Euarchontoglires clade is based on DNA sequence analyses and retrotransposonmarkers that combine the clades Glires (Rodentia + Lagomorpha) and Euarchonta (Scandentia + Primates + Dermoptera).[2] It is usually discussed without a taxonomic rank but has been called a cohort, magnorder, or superorder. Relations among the four cohorts (Euarchontoglires, Xenarthra, Laurasiatheria, Afrotheria) and the identity of the placental root remain controversial.[3][4]
So far, few, if any, distinctive anatomical features have been recognized that support Euarchontoglires; nor does any strong evidence from anatomy support alternative hypotheses.Шаблон:Citation needed Although both Euarchontoglires and diprotodontmarsupials are documented to possess a vermiform appendix, this feature evolved as a result of convergent evolution.[5]
One study based on DNA analysis suggests that Scandentia and Primates are sister clades, but does not discuss the position of Dermoptera.[8] Although it is known that Scandentia is one of the most basal Euarchontoglires clades, the exact phylogenetic position is not yet considered resolved, and it may be a sister of Glires, Primatomorpha or Dermoptera or to all other Euarchontoglires.[9][4][10] Some old studies place Scandentia as sister of the Glires, invalidating Euarchonta.[11][12]
