article_snippet.sent: While some of the injuries appear to have been sustained during combat with other tyrannosaurs, others appear to have occurred after death.
article_snippet.sent: Dr David Hone, a paleontologist at Queen Mary University of London, who led the research said: 'This animal clearly had a tough life, suffering numerous injuries across the head including some that must have been quite nasty. '
article_snippet.sent: The researchers, whose work is published in the journal PeerJ found numerous injuries on the skull, several of which appeared to match the teeth of tyrannosaurs.
article_snippet.sent: the skull was covered in bite marks made by Tyrannosaur teeth .
article_snippet.sent: One bite to the back of the head broke off part of the skull and left a circular tooth-shaped puncture through the bone.
article_snippet.sent: However, there are signs the bone had begun healing, suggesting the injury was not fatal and that the animal lived for some time after the animal was inflicted.
article_snippet.sent: Dr Hone and his colleague Darren Tanke from the Royal Tyrrell Museum in Drumheller, Alberta said: 'Numerous wounds were inflicted during life and despite some considerable damage the animal clearly survived as shown by the evidence of healing. '
article_snippet.sent: The specimen must have been decaying prior to the delivery of at least one major bite to the dentary, and the condition of other material suggests scavenging, rather than simply late-stage carcass consumption.'