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10 of April, 15:35

Relatives tyrannosaurs were cannibals
That daspletosaurus devoured each other say the teeth marks on the skull of a young lizard who lived 75 million years ago. Found the remains of a claim that the animal does not reach the size of an adult specimen.

The skull of Tyrannosaurus was discovered in 1994. Massive skull length of meter showed that daspletosaurus hunted large herbivores on ceratopsid. But in the skull were found fingerprints bites his relatives. 1 of those attacks were deprived of daspletosaurus skull, but the wound eventually overgrown. Consequently, the lizard lived for some time after acquired defects.

According to estimates of scientists, the 10 square km located just 1 large predator. Therefore, tyrannosaurid met each other very rarely. However in the case of a meeting organized predators ritual fights. This led researchers at the idea that the presence of extensive defects in the skull of a young specimen expresses her inexperience in duels against other predators. "Young predators are very naive. In Africa you can often see six lions trying to hunt rhinos. Adult lions are ready to do it only in extreme situations" - quoted by EurekAlert control studies, worker University David Hawn.

On cannibalism pointed bone defects. Research workers imagine that the corpse of the lizard a couple of times biting an adult individual. "The animal has lived a pretty hard life. He suffered from multiple head injuries that he inflicted congeners. We assume that the finishing blow was dealt him a representative of the same species," said hawn.

Daspletosaurus lived about 77 million years ago in North America. The dinosaur lived on the area of the modern province of Alberta, Canada. The predator did not have time to reach the size of an adult specimen, when he was torn to pieces with their own relatives.

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