Thousands of fossilized bones from a Cretaceous-period bonebed in Wyoming, the United States, offer rare physical evidence that Tyrannosaurus rex fed on the carcasses of a duck-billed dinosaur species called Edmontosaurus annectens. Life reconstruction of Edmontosaurus annectens. Image credit: Dani Navarro. “Identifying the origin of perforating lesions on fossil bone is often difficult, and many are considered tooth traces, in spite of more likely...
