today.
https://www.sciencealert.com/an-ai-found-an-unknown-ghost-ancestor-in-the-human-genome
https://www.nature.com/articles/s41467-018-08089-7
"We thought we'd try to find these places of high divergence in the genome, see which are Neanderthal and which are Denisovan, and then see whether these explain the whole picture," Bertranpetit told Smithsonian.
"As it happens, if you subtract the Neanderthal and Denisovan parts, there is still something in the genome that is highly divergent."
The findings were published in Nature Communications.