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 ...

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” ...

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 ...

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 ...

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 ...

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

Rare Tyrannosaurus rex fossils go on public display in Beijing on Tuesday as the exhibition T-REX — A Special Exhibition for ...

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 ...