An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

A new list of the 25 most threatened primates has been published by the International Primatological Society, which held its 30th congress in Madagascar in July. More than 40% of primate species are ...

Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

Add Yahoo as a preferred source to see more of our stories on Google. A paleoartist's depiction of Purgatorius. Researchers recently found teeth of this ancient primate in Colorado, the furthest south ...