A pregnant Tyrannosaurus rex has been found, shedding light on the evolution of egg-laying as well as on gender differences in the dinosaur. Researchers discover medullary bone in leg bone of T rex ...

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 ...

Scientists identified a new species of Tyrannosaurs that's likely a predecessor to T. Rex. The new species shows the dinosaurs got bigger a lot earlier than scientists originally thought. It also ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL ...

Revisiting a partial dinosaur skull first discovered in the 1980s has some scientists convinced that what was originally catalogued as a Tyrannosaurus rex in fact represents the closest relative of ...

Birds are actually living dinosaurs - one of the few groups that survived after a huge asteroid hit Earth 66 million years ...

Discover the “Dragon Prince,” a newly identified tyrannosaur ancestor from Mongolia that fills a key gap in T. rex evolution. Learn how this 86-million-year-old dinosaur reshaped our understanding of ...

Popular culture imagines a roaring T. rex. However, scientists suggest this is fiction. Fossil evidence does not support loud ...

The new animal, based on a single fossil smuggled out of China and eventually sold to a private collector, has been named Raptorex-- which means "king raptor." It lived 125 million years ago in a lake ...

A new biomechanical study has revealed that Tyrannosaurus rex walked with a digitigrade, toe-first gait similar to modern ostriches, overturning decades of flat-footed depictions popularized by ...

Add Yahoo as a preferred source to see more of our stories on Google. A newly identified dinosaur species from Mongolia is rewriting the history of the T. rex family tree. Dubbed the “Dragon Prince” ...