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

A new study reveals Tyrannosaurus rex took 40 years to reach full size, not 30, as previously thought. Researchers analyzed ...

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 ...

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 ...

(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 ...

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 ...

For decades, paleontologists debated whether fossils were of a young T. rex or a species called nanotyrannus. A new study settles it: Nanotyrannus is real. A remarkably complete tyrannosaur specimen, ...

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What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology's longest-running debates—whether Nanotyrannus is a distinct species, or ...