A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder.

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across North America.

Primate species with better color vision are not more likely to have red skin or fur coloration, as previously thought. Primate species with better colour vision are not more likely to have red skin ...

Tiny, tooth-sized fossils have just reshaped the story of our deepest ancestry. Paleontologists have discovered the southernmost remains ever found of Purgatorius—the earliest-known relative of all ...

New minuscule fossils of Purgatorius, the earliest-known relative of all primates—including humans—have been unearthed in a ...

Learn about the different ways mammals descended from trees and what this can tell us about early primate evolution.

Jason Gilchrist does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Punch, a baby squirrel monkey from the Amazon, was separated from his mother at birth and transported to arid Lima to be sold as a pet ...

Macaque species with higher social tolerance possess larger amygdalae, redefining the brain region as a social hub.