Work on Allosaurus skull mechanics compared it to large modern lizards, showing it likely used repeated strikes rather than single lethal bites. In tyrannosaur research, earlier studies confirmed T.

WASHINGTON (Reuters) - The dreaded dinosaur Allosaurus was the scourge of the Jurassic Period landscape some 150 million years ago, an apex predator just as Tyrannosaurus rex was 80 million years ...

Fossils found covered with ancient bite marks suggest at least one type of large dinosaur was in such dire straits, it began dining on members of its own species. A remarkable 29 percent of 2,368 ...