The first known fossil of a Denisovan skull has been found in a Siberian cave
DNA evidence hints that the hominids interbred with humans as recently as 15,000 years ago

SKULL MYSTERY In Siberia’s Denisova Cave (shown), scientists have found the first fossil remains of a skull from a poorly understood Stone Age hominid group called Denisovans.
Демин Алексей Барнаул/Wikimedia Commons (CC BY-SA 4.0)
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