The tiny arms of Tyrannosaurus rex have puzzled scientists for decades. A new study now suggests a fairly simple explanation: ...

We all know about the dinosaur called the Tyrannosaurus rex, also known as the T. rex, which is famous for its large head and ...

Some scientists have suggested a different idea: T. rex’s arms may have evolved to be smaller as another body part grew larger. The fossil record reveals that arms got shorter as theropod skulls got ...

Tyrannosaurus rex is often called the scariest and most feared dinosaur to ever walk the Earth, but science still debates ...

Tyrannosaurus rex was a late developer who kept growing until the age of 40, reveals new research. The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to ...

WASHINGTON (Reuters) - A group of researchers is proposing that Tyrannosaurus, the most famous of all dinosaurs and the ultimate apex predator, actually includes three species and not just the single ...

Tyrannosaurus rex was not just a huge beast with a big bite, it had nerve sensors in the very tips of its jaw enabling it to better detect -- and eat -- its prey, a new study finds. Tyrannosaurus rex ...

A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to be ...

T. rex teeth — possibly up to six inches long — were thought by many to be too big not to protrude. In recent years, paleontologists have debunked other stereotypical portrayals of the dinosaur. Some ...

Ever since the first Tyrannosaurus skeleton was put on display in 1905, the tyrant lizard has captivated the world. Now, researchers say that the Tyrannosaurus may have actually developed into three ...