A very early out of Africa may have taken place if the paper by Anne Dambricourt Malassé et al., Anthropic activities in the fossiliferous Quranwala Zone, 2.6 Ma, Siwaliks of Northwest India, historical context of the discovery and scientific investigations (Comptes Rendus Palevol, doi.org/bb7c) is correct.
Though it is behind a paywall, the abstract clearly states that: "This paper presents the historical context and the rigorous scientific process, which has led to the acknowledgment that some bones, dating back to the Latest Pliocene, present intentional and precise cut marks made by sharp edges in quartzite and an intelligence, which knew the anatomy of the bovid carcasses. Our pluridisciplinary works support anthropic activities 2.6 Ma ago in the sub-Himalayan floodplain and the probability of finding hominin fossils in the Quranwala Zone. ".
Now 2.6 million years ago is long before any Homo erectus moved out of Africa (their oldest Asian remains have been dated at 1.8 Ma). Or perhaps they did migrate but much earlier. Or were their predecessors, the Homo habilis the first to leave Africa. Perhaps the H. habilis evolved into H. erectus in Asia and these back migrated into Africa...
The point is that this site in Siwalik hills is about 300 kilometres north of New Delhi, India, well in the heart of Southern Asia, and it is a clear indication that human origins are much more complicated than we once believed.
Also, it gives us about 1 million additional years for those archaic people, to reach America...
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