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Euarchontoglires (from: Euarchonta ("true rulers") + Glires ("dormice")), synonymous with Supraprimates, is a clade and a superorder of , the living members of which belong to one of the five following groups: , Lagomorpha, , , and .
So far, few, if any, distinctive anatomical features have been recognized that support Euarchontoglires; nor does any strong evidence from anatomy support alternative hypotheses. Although both Euarchontoglires and Diprotodontia are documented to possess a vermiform appendix, this feature evolved as a result of convergent evolution.
Euarchontoglires probably split from the Boreoeutheria magnorder about 85 to 95 million years ago, during the Cretaceous, and developed in the island group that would later become Europe. This hypothesis is supported by molecular evidence; so far, the earliest known date to the early Paleocene. The combined clade of Euarchontoglires and Laurasiatheria is recognized as Boreoeutheria.
One study based on DNA analysis suggests that Scandentia and Primates are sister clades, but does not discuss the position of Dermoptera. 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. Some old studies place Scandentia as sister of the Glires, invalidating Euarchonta.
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