Australopithecus sediba at 1.977 Ma and Implications for the Origins of the Genus Homo
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 ti...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2011-09, Vol.333 (6048), p.1421-1423 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | 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. |
| description | 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. |
| doi_str_mv | 10.1126/science.1203697 |
| format | Article |
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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.</abstract><cop>Washington, DC</cop><pub>American Association for the Advancement of Science</pub><pmid>21903808</pmid><doi>10.1126/science.1203697</doi><tpages>3</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; JSTOR Archive Collection A-Z Listing; Science journals (American Association for the Advancement of Science = AAAS) |
| subjects | Animals Australopithecus Biological taxonomies Caves Dolomite Earth sciences Earth, ocean, space Evolution Evolutionary biology Exact sciences and technology Flowstone Fossils Geologic Sediments Geological facies Geology - methods Hominidae - anatomy & histology Hominidae - classification Hominids Magnetics Marine and continental quaternary Paleontology Prehistoric era Radiometric Dating Research universities Sediments South Africa Surficial geology Time Uranium Vertebrate paleontology |
| title | Australopithecus sediba at 1.977 Ma and Implications for the Origins of the Genus Homo |
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