The earliest known hominid interbreeding occurred 700,000 years ago
Neandertal-Denisovan ancestors migrating to Eurasia heralded hookups with a resident Homo group
A Homo erectus skull dating to around 1.8 million years ago, found at the Dmanisi site in the nation of Georgia, may come from a population that later interbred with ancestors of Neandertals and Denisovans, researchers say.
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