New Late-Pleistocene uranium–thorium and ESR dates for the Singa hominid (Sudan) |
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| Authors: | F. McDermott,C. Stringer,R. Grü n,C.T. Williams,V.K. Din,C.J. Hawkesworth |
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| Affiliation: | aDepartment of Geology, University College Dublin, Belfield, Dublin, 4, Ireland;bDepartment of Palaeontology, The Natural History Museum, London, SW7 5BD, U.K.;cQuaternary Dating Research Centre, Australian National University, Canberra, A.C.T. 0200, Australia;dDepartment of Mineralogy, The Natural History Museum, London, SW7 5BD, U.K.;eDepartment of Earth Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, U.K. |
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| Abstract: | The Singa (Sudan) calvaria has been interpreted previously as a terminal Pleistocene modern human fossil, perhaps related to the Bushman of Southern Africa. Here we report new mass-spectrometric U–Th dates for the calcrete deposit enclosing the fossil teeth and the calvaria itself and new electron spin resonance (ESR) dates for associated dental materials. The new data constrain the age of the hominid to at least 133±2 ka. Together with the preferred linear uptake (LU) ESR dates, the U–Th data confirm that the intriguing mixture of modern and archaic characteristics in the Singa specimen date from isotope stage 6. Far from being a modern human fossil, it represents a rare example of an archaic African population which may have been ancestral to all modernHomo sapiens. |
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| Keywords: | Singa hominid U&ndash Th dating ESR dating U&ndash Th isochrons |
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