Structural analysis of the femoral diaphyses of an early modern human from Tianyuan Cave, China

doi:10.1016/j.quaint.2015.10.099

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	Structural analysis of the femoral diaphyses of an early modern human from Tianyuan Cave, China
	Wei, Pianpian 1,2,3; Wallace, Ian J.4; Jashashvili, Tea 3; Musiba, Charles M.3,5; Liu, Wu 1
刊名	QUATERNARY INTERNATIONAL
	2017-04-01
卷号	434 页码:48-56
关键词	Cortical Thickness Distribution Femur Zhoukoudian Homo Sapiens East Asia Late Pleistocene
DOI	10.1016/j.quaint.2015.10.099
文献子类	Article
英文摘要	The Tianyuan 1 skeleton is among the oldest fossil specimens of our species from East Asia. Important in the original assessment of the skeleton as belonging to a modern human was its femoral structure, particularly its well-developed pilasters. Also noteworthy were its large femoral diaphyseal second moments of area, which were interpreted as evidence of a physically demanding lifestyle, and pathological bone growths on the posterior femoral shafts. Here, we build on previous studies of femoral morphology in Tianyuan 1 by analyzing its diaphyseal structure using micro-computed tomography coupled with a novel method of visualizing cortical bone thickness distributions along the shaft with color maps. Additionally, we calculate diaphyseal second moments of area in Tianyuan 1 with and without its pathological bone additions in order to evaluate whether these growths are the cause of its apparently high diaphyseal robusticity. Diaphyseal color maps and second moments of area of Tianyuan 1 femora are compared to those of three recent (Holocene) human comparative samples, as well as samples of Pleistocene humans. The results show that in terms of cortical thickness distribution, Tianyuan 1 femoral diaphyses are strikingly similar to those of recent humans, as well as Pleistocene early modern humans, yet distinct from the diaphyses of Neandertals. This provides additional support for the modern human status of Tianyuan 1. Analyses of second moments of area reveal that Tianyuan 1 is best classified as a Pleistocene early modern human rather than as a member of any of the recent samples when pathological bone additions are included in area moment calculations. Interestingly, however, once pathological growths are virtually removed, Tianyuan 1 cannot be assigned with confidence to any comparative group. This suggests that the relatively high anteroposterior femoral diaphyseal strength mid-distally in Tianyuan 1 is to some degree a product of its pathological condition. (C) 2016 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词	BODY-MASS ; LIMB ; HOMO ; PROPORTIONS ; MOBILITY ; EUROPE
WOS研究方向	Physical Geography ; Geology
语种	英语
WOS记录号	WOS:000399509100006
资助机构	Chinese Academy of Sciences(GJHZ201314 ; National Natural Science Foundation of China(41272034 ; Department of Science and Technology of South Africa ; National Research Foundation of South Africa ; laZD-EW-03 ; 41302016) ; XDA05130101)
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7451]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Witwatersrand, Evolutionary Studies Inst, Private Bag 3, ZA-2050 Johannesburg, South Africa 4.Harvard Univ, Dept Human Evolutionary Biol, Cambridge, MA 02138 USA 5.Univ Colorado, Dept Anthropol, Denver, CO 80217 USA
推荐引用方式 GB/T 7714	Wei, Pianpian,Wallace, Ian J.,Jashashvili, Tea,et al. Structural analysis of the femoral diaphyses of an early modern human from Tianyuan Cave, China[J]. QUATERNARY INTERNATIONAL,2017,434:48-56.
APA	Wei, Pianpian,Wallace, Ian J.,Jashashvili, Tea,Musiba, Charles M.,&Liu, Wu.(2017).Structural analysis of the femoral diaphyses of an early modern human from Tianyuan Cave, China.QUATERNARY INTERNATIONAL,434,48-56.
MLA	Wei, Pianpian,et al."Structural analysis of the femoral diaphyses of an early modern human from Tianyuan Cave, China".QUATERNARY INTERNATIONAL 434(2017):48-56.