The new species shows the dinosaurs got bigger a lot earlier than scientists originally thought. It also supports the theory that T. Rex originated in North America, not Asia. Scientists recently ...

NEW YORK (AP) — 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 ...

Dinosaurs haven’t roamed the Earth for millions of years, but the nature of their reign has sparked no shortage of controversial debates among paleontologists that remain unresolved today. Late last ...

Tyrannosaurus subdued prey with raw power, using bone-crushing bite force. But other meat-eating dinosaurs that rivaled T. rex in size used different approaches. Giganotosaurus relied more on slashing ...

Billions of Tyrannosaurus rex roamed North America during their fascinating reign as top predators, according to a team of researchers that went about the daunting task of making the calculation.

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...

Scientists have discovered what they believe to be a new species of theropod dinosaur — making it a close relative of the Tyrannosaurus rex. A group of researchers said they recently uncovered rare ...

The Tyrannosaurus rex is often shown baring massive, sharp teeth, like the ferocious creature in "Jurassic Park." But new research suggests that this classic image might be wrong.The teeth on T. rex ...

All the Latest Game Footage and Images from Dinosaur Park: Jurassic Trex World Take your own personal dinosaur strolling in a delightful wilderness from the jurassic times In this energizing and fun ...

Young T. Rex or a New Dinosaur? New Bones Add to the Debate NEW YORK (AP) — Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or ...