T. rex's story has been turned on its head by a new discovery about one of the world's most famous fossil finds. One of the ...

The “dueling dinosaur” fossil still leaves more questions than answers as scientists now attempt to determine their causes of ...

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 ...

The debate over Nanotyrannus’ identity is finally over. A remarkably preserved fossil proves it was a mature species, not a teenage T. rex. This discovery rewrites how scientists understand ...

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.

Scientists studying the mighty T-rex may have found a way to tell a "she rex" from a "he rex." The dinosaurs knew the difference, of course. But scientists, with only fossilized bones to work from, ...