A dental perspective on the taxonomic affinity of the Balanica mandible (BH-1)

Skinner, Matthew M., de Vries, Dorien, Gunz, Philipp, Kupczik, Kornelius, Klassen, R. Paul, Hublin, Jean-Jacques, Roksandic, Mirjana (2016) A dental perspective on the taxonomic affinity of the Balanica mandible (BH-1). Journal of Human Evolution, 93 . pp. 63-81. ISSN 0047-2484. (doi:10.1016/j.jhevol.2016.01.010) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1016/j.jhevol.2016.01.010

Abstract

The Middle Pleistocene represents a period of critical importance in human evolution, marked by encephalisation and dental reduction, and increasing diversification of temporally and spatially distributed hominin lineages in Africa, Asia and Europe. New specimens, especially from areas less well represented in the fossil record, can inform the debate on morphological changes to the skeleton and teeth and the phylogenetic course of human evolution during this period. The mandible from the cave of Mala Balanica, Serbia has recently been re-dated to at least 400 ka, and its well-preserved dentition presents an excellent opportunity to characterize molar crown morphology at this time period, and re-examine claims for a lack of Neandertal affinities in the specimen. In this study we employ microtomography to image the internal structure of the mandibular molars (focusing on the morphology of the enamel-dentine junction, or EDJ) of the BH-1 specimen and a comparative sample (n = 141) of Homo erectus sensu lato, Homo neanderthalensis, Pleistocene Homo sapiens, and recent H. sapiens. We quantitatively assess EDJ morphology using 3D geometric morphometrics and examine the expression of discrete dental traits at the dentine surface. We also compare third molar enamel thickness in BH-1 to those of H. neanderthalensis and both Pleistocene and recent H. sapiens, and document previously unreported morphology of the BH-1 premolar and molar roots. Our results highlight the reliability of the EDJ surface for classifying hominin taxa, indicate a primitive dental morphology for BH-1 molars, and confirm a general lack of derived Neandertal features for the Balanica individual. The plesiomorphic character of BH-1 is consistent with several competing models of Middle Pleistocene hominin evolution and provides an important regional and temporal example for reconstructing morphological changes in the mandible and teeth during this time period.

Item Type: Article
DOI/Identification number: 10.1016/j.jhevol.2016.01.010
Uncontrolled keywords: Hominin; Middle Pleistocene; Enamel-dentine junction (EDJ); Mandible; Molars; MicroCT
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation
Depositing User: Matthew Skinner
Date Deposited: 13 Mar 2017 12:08 UTC
Last Modified: 29 May 2019 18:49 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/60879 (The current URI for this page, for reference purposes)
  • Depositors only (login required):