geometricmorphometricanalysisoftheearlypleistocenehomininteethfromjianshihubeiprovincechina

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	geometricmorphometricanalysisoftheearlypleistocenehomininteethfromjianshihubeiprovincechina
	Liu Wu1 ; Ronald Clarke 2; Xing Song 3
	2010
发表期刊	sciencechinaearthsciences
ISSN	1674-7313
卷号	53 期号:8 页码:1141
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.
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Chinese Academy of Sciences] ; [MST of China]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/11163
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.金山大学 3.中国科学院大学
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Liu Wu,Ronald Clarke,Xing Song. geometricmorphometricanalysisoftheearlypleistocenehomininteethfromjianshihubeiprovincechina[J]. sciencechinaearthsciences,2010,53(8):1141.
APA	Liu Wu,Ronald Clarke,&Xing Song.(2010).geometricmorphometricanalysisoftheearlypleistocenehomininteethfromjianshihubeiprovincechina.sciencechinaearthsciences,53(8),1141.
MLA	Liu Wu,et al."geometricmorphometricanalysisoftheearlypleistocenehomininteethfromjianshihubeiprovincechina".sciencechinaearthsciences 53.8(2010):1141.

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