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 ...

RALEIGH, N.C. -- Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a ...

WINONA, Minn. — It was a dinosaur that once roamed the Earth 66 million years ago, and now a big piece of it sits housed in a ...

(CNN) — Scientists have identified a previously unknown 86 million-year-old dinosaur species that fills an early gap in the fossil record of tyrannosaurs, revealing how they evolved to become massive ...

Paleontologists have discovered a new species of dinosaur that was related to the infamous Tyrannosaurus rex. The dino fossils, two partial skeletons found in Gobi Desert in Mongolia in the 1970s, ...

Paleontologists have found a massive dinosaur footprint, measuring a full 92 centimeters (roughly 35 inches) across. This colossal footprint hints at the existence of a truly gigantic dinosaur – ...

For decades, paleontologists argued over the lone skull used to establish the distinct species Nanotyrannus. Was it truly a ...

Scientists have unearthed over 16,600 dinosaur footprints in Bolivia, marking the largest gathering of predatory theropod tracks ever discovered.

CNN — Even as teenagers, Tyrannosaurus rex dominated the top of the food chain. Researchers can say that with more certainty after confirming that two small T. rex fossils found in the early 2000s are ...

While Tarbosaurus, an ancestor of T. rex, clocked in at between 3,000 and 6,000 kilograms (6,613 pounds and 13,227 pounds), the fleet-footed Khankhuuluu mongoliensis likely weighed only around 750 ...