Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi, Hubei Province, China

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	Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi, Hubei Province, China
	Liu Wu1 ; Ronald, Clarke 2; Xing Song 1,3; liuwu@ivpp.ac.cn
	2010-08-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
ISSN	1674-7313
卷号	53 期号:8 页码:1141-1152
文章类型	Article
摘要	Although the early Pleistocene hominin fossils found in East Asia continent are widely recognized as the earliest hominins migrated from Africa, debates remain on the morphology and taxonomy of these fossils. In this study, dental crown shape of the three early Pleistocene hominin teeth (P(3), M(1), and M(1)) found in Jianshi, Hubei Province of China was analyzed by means of geometric morphometrics. The comparative samples of fossil hominins from Africa, Asia, and Europe as well as those of modern humans (N=257) were used. The results indicate that the contour, asymmetry, and cusp patterns of these three types of teeth differ obviously between the fossil hominins and modern humans. The crown shape of P(3) in most fossil hominins including Australopithecus, African early Homo, and Asian Pleistocene hominins are asymmetric with their crown occlusal contours long and curving elliptic-shaped. The occlusal contour of the fossil hominin M(1) is symmetric and rectangle-shaped with no marked cusp protrusion. The crown shape of fossil M(1) is characterized by asymmetric contour with slightly projected metaconid and hypoconid. On the contrary, in modern Chinese and some European late Pleistocene hominins, the crowns of P(3)s show symmetric contours with buccal side wider than lingual side; the crown shape of M(1) is asymmetric with lingual cusp distal-placed, especially for hypoconid; the M(1) has symmetric and round crown contour. Our study reveals that Australopithecus has wide variations in its crown shape, whereas these dental morphospaces of Asian hominins are closely placed. The crown contour, symmetry, and cusp patterns of these three teeth of Jianshi hominin resemble those of Asian early and middle Pleistocene hominins. No marked difference in dental crown shape is shown between the Jianshi hominin and other Chinese Homo erectus, and there is also no evidence in support of the Jianshi hominin's closeness to Australopithecus and African early Homo members.
关键词	Human Evolution Tooth Shape Geometric Morphometric Jianshi Hubei China
WOS标题词	Science & Technology ; Physical Sciences
URL	查看原文
关键词[WOS]	DENTAL MORPHOLOGY ; MANDIBULAR MOLARS ; CROWN MORPHOLOGY ; CUSP AREAS ; SHAPE ; ALLOMETRY ; HOMO ; EVOLUTION ; PREMOLAR ; SIZE
收录类别	SCI ; SSCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000280642300006
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4545
专题	中科院古脊椎所（2000年以后）古人类及旧石器研究室
通讯作者	liuwu@ivpp.ac.cn
作者单位	1.Chinese Acad Sci, Key Lab Evolutionary Systemat Vertebrates, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Univ Witwatersrand, Johannesburg, South Africa 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu Wu,Ronald, Clarke,Xing Song,et al. Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi, Hubei Province, China[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(8):1141-1152.
APA	Liu Wu,Ronald, Clarke,Xing Song,&liuwu@ivpp.ac.cn.(2010).Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi, Hubei Province, China.SCIENCE CHINA-EARTH SCIENCES,53(8),1141-1152.
MLA	Liu Wu,et al."Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi, Hubei Province, China".SCIENCE CHINA-EARTH SCIENCES 53.8(2010):1141-1152.

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