期刊
SCIENCE
卷 333, 期 6048, 页码 1421-1423出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1203697
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资金
- South African Department of Science and Technology
- South African National Research Foundation
- Institute for Human Evolution
- University of the Witwatersrand
- National Geographic Society
- Palaeontological Scientific Trust
- Andrew W. Mellon Foundation
- Ford Foundation
- U.S. Diplomatic Mission to South Africa
- French Embassy of South Africa
- Oppenheimer and Ackerman families
- Sir Richard Branson
- Texas AM University
- Swiss National Research Foundation [PBBEP2-126195]
- Australian Research Council [DP0877603]
- University of Melbourne
- Liverpool University Geomagnetism Laboratory
- AfricaArray
- James Cook University
- BHPBilliton Geosciences
- Australian Research Council [DP0877603] Funding Source: Australian Research Council
- Swiss National Science Foundation (SNF) [PBBEP2-126195] Funding Source: Swiss National Science Foundation (SNF)
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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