New bone evidence suggests that Tyrannosaurus rex was not only a scavenger but also a cannibal. While researchers frequently find evidence of bites on bone fossils, Nicholas Longrich was surprised to find big, predator-sized tooth marks on T. rex bones--because the T. rex was the only large carnivore in the area, and therefore the only dinosaur who could have left those marks.
"These animals were some of the largest terrestrial carnivores of all time, and the way they approached eating was fundamentally different from modern species," Longrich added. "There's a big mystery around what and how they ate, and this research helps to uncover one piece of the puzzle." [The Guardian].
Longrich found a total of four bones--three from T. rex feet and one from an arm--that show marks of cannibalism. The location of the bite marks suggest that they were made after death; for example, some of the markings ...
