Three-dimensional analysis of mandibular dental root morphology in hominoids

被引:25
作者
Emonet, Edouard-Georges [1 ]
Tafforeau, Paul [2 ]
Chaimanee, Yaowalak [3 ]
Guy, Franck [1 ]
de Bonis, Louis [1 ]
Koufos, George [4 ]
Jaeger, Jean-Jacques [1 ]
机构
[1] Univ Poitiers, Inst Int Paleoprimatol Paleontol Humaine Evolut &, UMR CNRS 6046, Fac Sci, F-86022 Poitiers, France
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] DMR, Geol Survey Div, Paleontol Sect, Bangkok 10400, Thailand
[4] Aristotle Univ Thessaloniki, Dept Geol, Lab Geol & Palaeontol, GR-54006 Thessaloniki, Greece
关键词
Dentition; X-ray microtomography; Ouranopithecus; Khoratpithecus; Geometric morphometrics; Cladistics; GEOMETRIC MORPHOMETRIC-ANALYSIS; LATE MIOCENE; TOOTH-ROOT; GREAT APES; EVOLUTION; FOSSIL; OURANOPITHECUS; REAPPRAISAL; PHYLOGENY; THAILAND;
D O I
10.1016/j.jhevol.2011.11.011
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
Although often preserved in the fossil record, mandibular dental roots are rarely used for evolutionary studies. This study qualitatively and quantitatively characterizes the three-dimensional morphology of hominoid dental roots. The sample comprises extant apes as well as two fossil species, Khoratpithecus piriyai and Ouranopithecus macedoniensis. The morphological differences between extant genera are observed, quantified and tested for their potential in systematics. Dental roots are imaged using X-ray computerized tomography, conventional microtomography and synchrotron microtomography. Resulting data attest to the high association between taxonomy and tooth root morphology, both qualitatively and quantitatively. A cladistic analysis based on the dental root characters resulted in a tree topology congruent with the consensus phylogeny of hominoids, suggesting that tooth roots might provide useful information in reconstructing hominoid phylogeny. Finally, the evolution of the dental root morphology in apes is discussed. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:146 / 154
页数:9
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