We have seen that the Neanderthals lived in Western Eurasia and Denisovans in Eastern Eurasia (basically, Denisova cave). The 2018 report by Slon et al. provides the DNA analysis of a bone, Denisova 11, that comes from an individual who had a Neanderthal mother and a Denisovan father!
The previous sequencing had established that the Neanderthals and Denosovals diverged from each other by about 390 kya. It is, therefore, fascinating to note what was found in the Denisova 11 sample. The mitochondrial (mt)DNA showed it was a Neanderthal type, and carbon dating said it was more than 50,000 years old. And what is more: 38.6% of its DNA fragments possessed alleles matching the Neanderthal genome, and 42.3% carried alleles matching the Denisovan genome!
Reference
The genome of the offspring of a Neanderthal mother and a Denisovan father, 2018, Nature, 113
