A group of researchers has estimated how long it took Tyrannosaurus rex to reach its full size — and the time period is ...

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

Dr Holly Ballard and her team at Oklahoma State University studied leg bones from 17 different T.rex fossils to get a better ...

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

WASHINGTON (Reuters) - Surmising even the physical appearance of a dinosaur - or any extinct animal - based on its fossils is a tricky proposition, with so many uncertainties involved. Assessing a ...

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.

(TMX) - A fossil once locked in prehistoric combat has just rewritten one of paleontology’s longest-running debates — and upended what scientists thought they knew about Tyrannosaurus rex. The ...

Now, a new study of 17 tyrannosaur specimens, ranging from early juveniles to massive adults, has revealed that the king of ...

Many people think of tyrannosaurs as the formidable T. rex, but there’s a lot more to know about these prehistoric creatures. While T. rex was the largest of tyrannosaurs, there are many other species ...

A dinosaur fossil listed for sale in London for $20 million embodies one of the most heated debates in paleontology. By Julia Jacobs and Zachary Small Zachary Small reported from London, and Julia ...

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