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

Tiny fossil teeth from Colorado are revealing new clues about the very first relatives of primates, including humans.

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 ...

The tiny remnant belongs to Purgatorius, one of the earliest known relatives of all primates, including humans, which first ...

A few teeth, smaller than a grain of rice, are changing the map of your earliest primate relatives. They come from a creature called Purgatorius, a tiny tree-dwelling mammal that lived about 66 ...

Sixty-six million years ago, a massive asteroid smashed into Earth. Life has undergone at least five mass extinctions in the ...

This little critter hadn’t previously been identified south of Montana, but tiny, fossilized teeth show it had traveled into Colorado by around half a million years after the dinosaurs were wiped out.

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

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 ...

Fossils are rare because their formation and discovery depend on chains of ecological and geological events that occur over deep time. Only a small fraction of the primates that have ever lived has ...

A fossil that would fit on a baby’s fingertip has revealed fresh clues about the evolution of the earliest-known relative of ...

Learn how newly discovered Purgatorius fossils in Colorado’s Denver Basin are filling gaps in the Paleocene fossil record and ...