A healed fracture discovered on an ancient skull from China may be the oldest documented evidence of violence between humans, a study has shown.

The individual, who lived 150,000-200,000 years ago, suffered blunt force trauma to the right temple - possibly from being hit with a projectile.

But the ancient hunter-gatherer - whose sex is unclear - survived to tell the tale: the injury was completely healed by the time of the person's death.

Details are published in PNAS journal.

"There are older cases of bumps and bruises - and cases of trauma," said co-author Erik Trinkaus from Washington University in St Louis, US....