Museum workers found a T. rex tooth among the triceratops fossils on Thursday as they excavated prehistoric artifacts from a construction site in Thornton. The T. rex was likely scavenging and came ...

Museum workers found a T. rex tooth among the triceratops fossils on Thursday as they excavated prehistoric artifacts from a construction site in Thornton. The T. rex was likely scavenging and came ...

These Tyrannosaurus rex teeth, discovered Aug. 17 south of Bismarck, set records for the largest, intact T. rex teeth discovered during a North Dakota Geological Survey public fossil dig.

This browser does not support the Video element. The Tyrannosaurus rex is often shown baring massive, sharp teeth, like the ferocious creature in "Jurassic Park." But new research suggests that this ...

Fossilized dinosaur teeth can reveal a lot more than just how these creatures ate and who they were related to – they can also tell us what the air was like in prehistoric times. As it turns out, ...