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
![Denisova Cave](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/03/032819_bb_denisovan_feat.jpg?fit=860%2C460&ssl=1)
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)