Pioneering techniques used in this research may soon be applied to other dinosaur fossils and alter the course of ...

A study of fossil bones shows Tyrannosaurus rex kept growing until around age 40, challenging long-held ideas about dinosaur ...

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study.

There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth's most massive land ...

The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to adulthood than scientists ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

The T. rex population may have been smaller than scientists previously estimated, a new study says. The T. rex, or Tyrannosaurus rex if you want to get proper, is believed to have been the king of the ...

A comprehensive analysis of Tyrannosaurus rex fossils is surprising scientists with just how long these apex predators took ...

Paleontologists unearthed the bones of a T-Rex that lived more than 66 million years ago in what is now Montana Democratic Sen. Tim Kaine of Virginia said a reported U.S. follow-on strike on an ...