The current hypothesis, based on molecular clock evidence, suggests that the Euarchonta arose in the Cretaceous period, about 88 million years ago, and diverged 86.2 million years ago into the groups of tree shrews and Primatomorpha.
A hipótese actual, baseada en evidencias do reloxo molecular, suxiere que os Euarchonta apareceron no período cretáceo, hai uns 88 millóns de años (MA) e que diverxeron hai uns 86,2 MA para formar os grupos Scandentia e Primatomorpha.