T rex tooth stuck in fossil shows how predator hunted 66 million years ago

A broken tooth, embedded in the skull of a dinosaur for 66 million years, offers major hints on how Tyrannosaurus, aka T. rex, the apex predator, may have hunted. The fossil, sitting in the collection of Montana State University’s Museum of the Rockies, appears to have preserved an extraordinary moment of violence frozen in time. The specimen contains a tyrannosaur tooth still embedded in another dinosaur’s skull. Researchers from Montana State University and the University of Alberta in Canada studied the fossil, catalogued as MOR 1627, which they believe is one of the clearest physical records ever recovered of a tyrannosaur attack caught mid-action. The findings are published in the journal PeerJ.A rare fossilAround 66 million years ago, near the end of the Age of Dinosaurs, Tyrannosaurus dominated what is now Montana. These apex predators shared the landscape with horned Triceratops and duck-billed herbivores such as Edmontosaurus.