Growth rings in fossilized bones suggest the diminutive dinosaur, Nanotyrannus, would never grow up to become a T. rex — plus, a small breast cancer prevention trial shows promise.

Paleontologists have long debated whether small tyrannosaurs were their own species or simply teenage T. rexes. This debate just got a major shake-up. Reading time 3 minutes Researchers claim to have ...

Scientists have identified a never-before-seen species of dinosaur called the dragon prince — a prehistoric predator that set tyrannosaurs on the path to ruling Earth. This newly discovered relative ...

(CN) — A fossil long at the center of one of paleontology’s fiercest debates has finally given up its secret, and it’s rewriting what scientists know about Tyrannosaurus rex. Researchers studying the ...