Euarchonta

Primatomorpha

Scandentia (Treeshrews) Euarchonta. Euarchonta and Glires together form the Euarchontoglires, one of the four Eutherian clades.

Note that as eu- becomes ev- before vowels in Latin, Euarchonta is not a proper Latin phonological construct—Evarchonta would be appropriate. This is applied inconsistently in English, for example in euergetism on one hand and evangelism on the other. The current data situation be based on the molecular clock extrapolate that Euarchonta arose in the Cretaceous period about 88 million years ago and is already segregating 86.2 million years ago in the groups of tree shrews and Primatomorpha.