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Archaeologists tricked by sinking stone tools
© Rafael Ben-Ari/Getty
The arrival of modern humans to Australia should be brought forward 15,000 years, a review of existing evidence finds.
Modern humans (Homo sapiens) wended their way out of Africa into Europe between 50 and 55 thousand years ago (kya), but some studies suggest an earlier eastward spread, with H. sapiens landing in Australia 65 kya.
Now, a team that included researchers from the University of Adelaide has reviewed all studies dating H. sapiens remains and artefacts from sites around Southeast Asia and northern Australia, including the now disputed 65 kya Madjedbebe site. The researchers found that most evidence supports the 55 kya arrival in the region, but suggest that the Madjedbebe date is an anomaly caused by the artefacts sinking into older layers of sand.
Accurate dating and genetic analysis of the fossil record itself, which is often too fragmented to identify species by bone shape alone, would provide more precise answers than the dating of tools and sediments.
- Proc. Nat. Acad. Sci. USA 115, 8482–8490 (2018). doi: 10.1073/pnas.1808385115
|Department of Anthropology, Utah, United States of America (USA)||0.11|
|Department of Archaeology and History, La Trobe University, Australia||0.11|
|Department of Earth Sciences, Adelaide Uni, Australia||0.11|
|University of New South Wales (UNSW), Australia||0.11|
|ANU Department of Archaeology and Natural History, Australia||0.11|
|Extent Heritage Pty Ltd, Australia||0.06|
|College of Humanities, Arts and Social Sciences, Flinders University, Australia||0.06|
|Palaeontology, Geobiology and Earth Archives Research Centre (PANGEA), UNSW, Australia||0.06|
|Australian Centre for Ancient DNA, Adelaide Uni, Australia||0.06|
|School of Physical Sciences, Adelaide Uni, Australia||0.04|
|Institute for Photonics and Advanced Sensing (IPAS), Adelaide Uni, Australia||0.04|
|DST Weapons and Combat Systems Division, Australia||0.04|
|Museum and Art Gallery of the Northern Territory, Australia||0.04|
|CSIRO Land and Water, Australia||0.04|
|Research Institute for the Environment and Livelihoods (RIEL), CDU, Australia||0.04|