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Chemical composition of enamel and dentine in modern reptile teeth

Published online by Cambridge University Press:  05 July 2018

Y. Dauphin  and
C. T. Williams
Y. Dauphin*
Affiliation:
UMR 8148 IDES, bât. 504, Université Paris XI-Orsay, 91405 Orsay cedex, France
C. T. Williams
Affiliation:
Department of Mineralogy, Natural History Museum, Cromwell Road, London SW7 5BD, UK
*
*E-mail: yannicke.dauphin@u-psud.fr
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Abstract

Elemental distribution maps by wavelength-dispersive electron microprobe of enamel and dentine in modern crocodile teeth illustrate variations in both minor and major elements. Mg has the largest difference between the enamel and dentine, being enriched in the dentine. Mg, Ca and P are not homogeneously distributed in the dentine, but their distribution reflects changes during growth of the teeth. These variations in compositional differences of teeth from modern samples potentially can assist in establishing growth rates in fossil teeth samples, and thereby provide information on the physiology of extant species.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 247 - 250
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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References

Dauphin, Y. (1989) Composition chimique des dents de Reptiles. 1. Crocodiliens actuels et fossiles. Palaeontographica, A207, 147–160.Google Scholar
Dauphin, Y. (1997) Comparaison de la composition chimique de la dentine et de 1'email des dents de Reptiles et de Mammiferes actuels. Annales de Sciences naturelles, Zoologie, Paris, 13è séries, 18, 29–40.Google Scholar
Dauphin, Y. and Denys, C. (1994) Teneurs en Mg de la dentine et mode de croissance des dents – le cas des Rongeurs et des Lagomorphes. Comptes Rendus de l’Academie des Sciences Paris, séries II, 318, 705–711.Google Scholar
Dauphin, Y. and Williams, C.T. (2007) The chemical compositions of dentine and enamel from recent reptile and mammal teeth – variability in the diagenetic changes of fossil teeth. CrystEngComm, 9, 1252–1261.CrossRefGoogle Scholar
Erickson, G.M. (1996) Daily deposition of dentine in juvenile Alligator and assessment of tooth replacement rates using incremental line counts. Journal of Morphology, 228, 189–194.3.0.CO;2-0>CrossRefGoogle ScholarPubMed
Lee-Thorp, J. and Sponheimer, M. (2003) Three case studies used to reassess the reliability of fossil bone and enamel isotope signals for paleodietary studies. Journal of Anthropological and Archaeology, 22, 208–216.CrossRefGoogle Scholar
Sponheimer, M., de Ruiter, D., Lee-Thorp, J. and Spath, A. (2005) Sr/Ca and early hominin diets revisited: new data from modern and fossil tooth enamel. Journal of Human Evolution, 48, 147–156.CrossRefGoogle ScholarPubMed