Evidence mounts for interbreeding bonanza in ancient human speciesOur evolutionary history is slowly being untangled.
“There is this joke in the population genetics community — there’s always one more interbreeding event," Castellano says. So before researchers discover the next one, here’s a rundown of the interbreeding episodes that they have already deduced from studies of ancient DNA.
And this is pretty interesting too:
The mystery species could be an Asian offshoot of Homo erectus, which lived in Indonesia, perhaps as recently as 100,000 years ago, or possibly even relatives of Homo floresiensis, the 'hobbit' species discovered more than a decade ago on an Indonesian island. “We’re looking at a Lord of the Rings-type world — that there were many hominid populations,” one evolutionary geneticist told Nature when the findings were presented at a conference in 2013.
http://www.nature.com/news/evidence-mounts-for-interbreeding-bonanza-in-ancient-human-species-1.19394