Australopithecus sediba at 1.977 Ma and implications for the origins of the genus Homo |
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| Authors: | Pickering Robyn Dirks Paul H G M Jinnah Zubair de Ruiter Darryl J Churchil Steven E Herries Andy I R Woodhead Jon D Hellstrom John C Berger Lee R |
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| Institution: | School of Earth Sciences, University of Melbourne, Victoria, 3010, Australia. r.pickering@unimelb.edu.au |
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| Abstract: | Newly exposed cave sediments at the Malapa site include a flowstone layer capping the sedimentary unit containing the Australopithecus sediba fossils. Uranium-lead dating of the flowstone, combined with paleomagnetic and stratigraphic analysis of the flowstone and underlying sediments, provides a tightly constrained date of 1.977 ± 0.002 million years ago (Ma) for these fossils. This refined dating suggests that Au. sediba from Malapa predates the earliest uncontested evidence for Homo in Africa. |
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