Scientists say an entirely separate type of human identified from bones in Siberia co-existed and interbred with our own species. The ancient humans have been dubbed 'Denisovans' after the caves in Siberia where their remains were found. A study in Nature journal shows that Denisovans co-existed with Neanderthals perhaps around 50,000 years ago.
This provides confirmation there were at least four distinct types of human in existence when anatomically modern humans first left their African homeland. Along with modern humans, scientists knew about the Neanderthals and a dwarf human species found on the Indonesian island of Flores nicknamed The Hobbit. To this list, experts must now add the Denisovans.
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