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New Accelerator Mass Spectrometry (AMS) Ages Suggest a Revision of the Electron Spin Resonance (ESR) Middle Holocene Dates Obtained for a Toxodon platensis (Toxodontidae, Mammalia) from Southeast Brazil

Published online by Cambridge University Press:  18 July 2016

Walter Neves ,
Alex Hubbe  and
Ivo Karmann
Walter Neves
Affiliation:
Laboratório de Estudos Evolutivos Humanos, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, CEP 05508-090, São Paulo, SP, Brazil
Alex Hubbe*
Affiliation:
Laboratório de Estudos Evolutivos Humanos, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, CEP 05508-090, São Paulo, SP, Brazil
Ivo Karmann
Affiliation:
Departamento de Geologia Sedimentar, Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-900, São Paulo, SP, Brazil
*
Corresponding author. Email: alexhubbe@yahoo.com
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Abstract

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In a paper published in Applied Radiation and Isotopes, Baffa et al. (2000) reported a Middle Holocene date (∼6.5 kyr BP) for a specimen of Toxodon platensis from Ribeira do Iguape, southeast Brazil, using the emergent technique electron spin resonance (ESR). Through an accelerator mass spectrometry (AMS) procedure applied on tooth collagen, we provide a new set of dates to test the accuracy of the ages generated by ESR. We obtained 2 dates more than 4500 BP older than the previous one, suggesting a minimum Late Pleistocene age for the specimen.

Type
Notes and Comments
Information
Radiocarbon , Volume 49 , Issue 3 , 2007 , pp. 1411 - 1412
Copyright
Copyright © 2007 by the Arizona Board of Regents on behalf of the University of Arizona 

References

Auler, AS, Piló, LB, Smart, PL, Wang, X, Hoffmann, D, Richards, DA, Edwards, RL, Neves, WA, Cheng, H. 2006. U-series dating and taphonomy of Quaternary vertebrates from Brazilian caves. Palaeogeography, Palaeoclimatology, Palaeoecology 240(3–4):508–22.CrossRefGoogle Scholar
Baffa, O, Brunetti, A, Karmann, I, Dias Neto, CM. 2000. ESR dating of a toxodon tooth from a Brazilian karstic cave. Applied Radiation and Isotopes 52(5):1345–9.CrossRefGoogle ScholarPubMed
de Vivo, M, Carmignotto, AP. 2004. Holocene vegetation change and the mammal faunas of South America and Africa. Journal of Biogeography 31(6):943–57.CrossRefGoogle Scholar
MacFadden, BJ. 2005. Diet and habitat of toxodont mega-herbivores (Mammalia, Notoungulata) from the late Quaternary of South and Central America. Quaternary Research 64(2):113–24.CrossRefGoogle Scholar
Neves, WA, Piló, LB. 2003. Solving Lund's dilemma: new AMS dates confirm that humans and megafauna coexisted at Lagoa Santa. Current Research in the Pleistocene 20:57–60.Google Scholar
Stuvier, M, Reimer, PJ, Bard, E, Beck, JW, Burr, GS, Hughen, KA, Kromer, B, McCormac, G, van der Plicht, J, Spurk, M. 1998. IntCal98 radiocarbon age calibration, 24,000–0 cal BP. Radiocarbon 40(3):1041–83.Google Scholar
Talma, AS, Vogel, JC. 1993. A simplified approach to calibrating 14C dates. Radiocarbon 35(2):317–22.CrossRefGoogle Scholar