A new study suggests that certain theropods—two-legged, mostly meat-eating dinosaurs—had shrunken forelimbs as an ...

A new study documents that the robustness of skulls in carnivorous dinosaurs began to evolve first, a direct response to the increasing size of the plant-eating dinosaurs they hunted, shortly after di ...

This newly identified apex predator roamed the prehistoric oceans nearly 80 million years ago, growing to a length of 43 feet ...

Scientists have identified Tylosaurus rex as a massive marine predator that rivalled Tyrannosaurus rex in size, ruling ...

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet ...

Tyrannosaurus rex is often seen as the unstoppable king of the dinosaurs, but life in the Hell Creek ecosystem was far from ...

A Royal Society research paper published May 20 suggests that T. rex, which averaged more than 40 feet long with arms ...

One question dinosaur lovers have asked for years is what would happen if Tyrannosaurus rex and Spinosaurus ever met in ...

According to a new study, the Tyrannosaurus rex’s small arms — which measured around 3 feet long — naturally evolved to ...

A newly identified mosasaur from Texas suggests that some ancient marine predators were larger, more powerful, and possibly ...

An analysis of 85 dinosaur species shows that tiny forearms in meat-eating dinosaurs were the result of an evolutionary trade ...