Eutriconodonta

Eutriconodonta is a order of early mammals. Eutriconodonts existed in Asia, Europe, North and South America during the Jurassic and the Cretaceous periods. The order was named by Kermack et al. in 1973 as a replacement name for the paraphyletic Triconodonta.

Read more about Eutriconodonta:  Phylogeny