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

Shark teeth are often considered the most common vertebrate fossils in the world, and for good reason. Each individual shark has rows upon rows of chompers that fall out and get replaced in conveyor ...

A fossil skull barely 1 inch long has proved to be a newborn reptile from Brazil’s Late Triassic, a period more than 230 million years ago when early reptiles dominated land ecosystems. Its tiny jaw ...

What does this mean? First, grooves that resemble "toothpick" marks don't necessarily prove tool use. Natural chewing, abrasive foods, or even swallowed grit can produce similar patterns. In some ...