An ancient species has had experts scratching their heads about its unusual jaw shape. The salamander-like creature had a ...

Picture this: you’re a scientist digging near the Amazon rainforest, and you pull a jawbone out of the ground that looks so ...

Paleontologists surveying a dry riverbed in northeastern Brazil repeatedly encountered the same type of fossil: a lower jaw about six inches long, curved and thick, and twisted in an unexpected way. A ...

Even with only jaws, Tanyka amnicola adds a new character to an ancient ecosystem that scientists are still trying to sketch ...

Scientists found a jaw so bizarre they assumed it was broken - they were very wrong.

In a new study, biologists laid to rest a century-old debate by confirming that a single species of frog, out of the more than 7,000 living today, has true teeth on its lower jaw. In a new study, ...