UR 501, l'hominidé du Plio-Pléistocène du Malawi. Analyse de la microanatomie de l'émail

Translated title of the contribution: UR 501, the Plio-Pleistocene hominid from Malawi. Analysis of the microanatomy of the enamel

Fernando V. Ramirez Rozzi, Tim Bromage, Friedemann Schrenk

Research output: Contribution to journalArticle

Abstract

The study of enamel microstructure characteristics was carried out in a mandible of a Plio-Pleistocene hominid (UR 501), found in Chiwondo Beds at Uraha (northern Malawi), dated around 2.5-2.3 Myrs, and attributed to Homo rudolfensis. It indicates that UR 501 dental development shares many patterns with other Plio-Pleistocene hominids, i.e. similar crown formation time in premolars and molars. Nevertheless, differences were found, especially in the lateral enamel thickness. In premolars, lateral enamel is as thin as in early Homo, and in molars it is as thick as in robust australopithecines from East Turkana. The difference between enamel lateral thickness in premolars and molars in UR 501, which is not found in another specimen attributed to H. rudolfensis (KNM-ER 1802), may indicate inter-populational variation in H. rudolfensis.

Translated title of the contributionUR 501, the Plio-Pleistocene hominid from Malawi. Analysis of the microanatomy of the enamel
Original languageFrench
Pages (from-to)231-234
Number of pages4
JournalComptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes
Volume325
Issue number3
DOIs
StatePublished - Aug 1997

Keywords

  • Crown formation time
  • Enamel thickness
  • H. rudolfensis
  • Striae of Retzius

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ocean Engineering

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