The first clear evidence that some dinosaurs were cannibals has been unearthed on the island of Madagascar.
A dinosaur the size of a small bus who lived in the twilight of the Age of the Dinosaurs was not only a ferocious meat-eater but also a cannibal, scientists say.
The fossilized remains of Majungatholus atopus, a distant cousin of the "tyrant king" Tyrannosaurus rex, were found in two spectacular beds of bones in two quarries in Madagascar.
Many of the bones bear the characteristic jagged-edge toothmarks of M. atopus, and two of his own species were among the meals, according to paleontologists reporting their work in Thursday's issue of Nature, the British science journal.