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dc.contributor.authorDirks, Paul HGM
dc.contributor.authorRoberts, Eric M
dc.contributor.authorHilbert-Wolf, Hannah
dc.contributor.authorKramers, Jan D
dc.contributor.authorHawks, John
dc.contributor.authorDosseto, Anthony
dc.contributor.authorDuval, Mathieu
dc.contributor.authorElliott, Marina
dc.contributor.authorEvans, Mary
dc.contributor.authorGrun, Rainer
dc.contributor.authorHellstrom, John
dc.contributor.authorHerries, Andy IR
dc.contributor.authorJoannes-Boyau, Renaud
dc.contributor.authorMakhubela, Tebogo V
dc.contributor.authorPlaczek, Christa J
dc.contributor.authorRobbins, Jessie
dc.contributor.authorSpandler, Carl
dc.contributor.authorWiersma, Jelle
dc.contributor.authorWoodhead, Jon
dc.contributor.authorBerger, Lee R
dc.date.accessioned2017-10-31T12:31:39Z
dc.date.available2017-10-31T12:31:39Z
dc.date.issued2017
dc.identifier.issn2050-084X
dc.identifier.doi10.7554/eLife.24231
dc.identifier.urihttp://hdl.handle.net/10072/338690
dc.description.abstractNew ages for flowstone, sediments and fossil bones from the Dinaledi Chamber are presented. We combined optically stimulated luminescence dating of sediments with U-Th and palaeomagnetic analyses of flowstones to establish that all sediments containing Homo naledi fossils can be allocated to a single stratigraphic entity (sub-unit 3b), interpreted to be deposited between 236 ka and 414 ka. This result has been confirmed independently by dating three H. naledi teeth with combined U-series and electron spin resonance (US-ESR) dating. Two dating scenarios for the fossils were tested by varying the assumed levels of 222Rn loss in the encasing sediments: a maximum age scenario provides an average age for the two least altered fossil teeth of 253 +82/–70 ka, whilst a minimum age scenario yields an average age of 200 +70/–61 ka. We consider the maximum age scenario to more closely reflect conditions in the cave, and therefore, the true age of the fossils. By combining the US-ESR maximum age estimate obtained from the teeth, with the U-Th age for the oldest flowstone overlying Homo naledi fossils, we have constrained the depositional age of Homo naledi to a period between 236 ka and 335 ka. These age results demonstrate that a morphologically primitive hominin, Homo naledi, survived into the later parts of the Pleistocene in Africa, and indicate a much younger age for the Homo naledi fossils than have previously been hypothesized based on their morphology.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publishereLife Sciences Publications
dc.relation.ispartofpagefrome24231-1
dc.relation.ispartofpagetoe24231-59
dc.relation.ispartofjournaleLife
dc.relation.ispartofvolume6
dc.subject.fieldofresearchArchaeology of Asia, Africa and the Americas
dc.subject.fieldofresearchGeochronology
dc.subject.fieldofresearchBiochemistry and Cell Biology
dc.subject.fieldofresearchcode210103
dc.subject.fieldofresearchcode040303
dc.subject.fieldofresearchcode0601
dc.titleThe age of Homo naledi and associated sediments in the Rising Star Cave, South Africa
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2017 Dirks et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorGrun, Rainer
gro.griffith.authorDuval, Mathieu


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