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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Subocclusal dental morphology of sahelanthropus tchadensis and the evolution of teeth in hominins
American Journal of Physical Anthropology, Volume 153, No. 1, Year 2014
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Description
The evolution of the teeth in hominins is characterized by, among other characters, major changes in root morphology. However, little is known of the evolution from a plesiomorphic, ape-like root morphology to the crown hominin morphology. Here we present a study of the root morphology of the Miocene Chadian hominin Sahelanthropus tchadensis and its comparison to other hominins. The morphology of the whole lower dentition (I1-M3) was investigated and described. The comparison with the species Ardipithecus kaddaba and Ardipithecus ramidus indicates a global homogeneity of root morphology in early hominins. This morphology, characterized notably by a reduction of the size and number of the roots of premolars, is a composite between an ape-like morphology and the later hominin morphology. Trends for root evolution in hominins are proposed, including the transition from a basal hominoid to extant Homo sapiens. This study also illustrates the low association between the evolution of tooth root morphology and the evolution of crowns in hominins. Copyright © 2013 Wiley Periodicals, Inc.
Authors & Co-Authors
Emonet, Edouard Georges
France, Paris
Collège de
France, Poitiers
Universite de Poitiers
Andossa, Likius
Chad, N'djamena
Universite de N'djamena
Taïsso MacKaye, Hassane
Chad, N'djamena
Universite de N'djamena
Brunet, Michel
France, Paris
Collège de
France, Poitiers
Universite de Poitiers
Statistics
Citations: 16
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1002/ajpa.22400
ISSN:
00029483
e-ISSN:
10968644
Research Areas
Health System And Policy