A newly described dinosaur that appears to have persisted beyond a catastrophic die-off is forcing scientists to rethink how ...

An experiment on reptile decomposition aims to shed light on a variety of paleontological mysteries, including why so many ...

Dinosaurs have thrown into question everything we thought we knew about the evolution of body size. In biology, Bergmann's Rule is a 150-year-old principle that correlates an animal's body size to ...

WASHINGTON — One of the most complete dinosaur mummies ever found is uncovering secrets locked away for millions of years, bringing researchers as close as they will ever get to touching a live dino.

Broken shin bone of a carnivorous dinosaur, showing rings like the rings of a tree. These closely spaced rings were formed annually and indicate a slow-growing, long-lived animal. Credit: Michael D. D ...

A dinosaur that roamed modern-day Morocco more than 165 million years ago had a neck covered in three-foot long spikes, a weapon on its tail and bony body armor, according to researchers who unearthed ...