What is "boreoeutheria"

Boreoeutheria (synonymous with Boreotheria) (Greek: βόρειο " north" + ευ "good" + θεριό "beast") is a clade ( magnorder) of placental mammals that is composed of the sister taxa Laurasiatheria (most hoofed mammals, most pawed carnivores, and several other groups) and Euarchontoglires (Supraprimates). It is now well supported by DNA sequence analyses, as well as retrotransposon presence or absence data.

The earliest known fossils belonging to this group date to about 65 million years ago, shortly after the K-Pg extinction event, though molecular data suggests they may have originated earlier, during the Cretaceous period.

With the exception of rhinoceroses and cetaceans, male members of the clade share the distinction of external testicles.