via PNAS, 06 August 2018: A new paper in PNAS reviews the evidence of human migration into Southeast Asia and Australia around 50,000 years ago, and in particular a critical discussion of another recent paper about the Madjedbebe rock shelter that pushes this date back to 65,000 years.
The PNAS paper is not Open Access unfortunately, but for a good summary of the paper reader the associated piece in The Conversation.
When did Homo sapiens first reach Southeast Asia and Sahul?
O’Connell et al, 2018
PNAS, https://doi.org/10.1073/pnas.1808385115
Anatomically modern humans ( Homo sapiens , AMH) began spreading across Eurasia from Africa and adjacent Southwest Asia about 50,000–55,000 years ago ( ca . 50–55 ka). Some have argued that human genetic, fossil, and archaeological data indicate one or more prior dispersals, possibly as early as 120 ka. A recently reported age estimate of 65 ka for Madjedbebe, an archaeological site in northern Sahul (Pleistocene Australia–New Guinea), if correct, offers what might be the strongest support yet presented for a pre–55-ka African AMH exodus. We review evidence for AMH arrival on an arc spanning South China through Sahul and then evaluate data from Madjedbebe. We find that an age estimate of > ka for this site is unlikely to be valid. While AMH may have moved far beyond Africa well before 50–55 ka, data from the region of interest offered in support of this idea are not compelling.
Source: When did Homo sapiens first reach Southeast Asia and Sahul?
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