Evolutionary trend in dental size in fossil orangutans from the Pleistocene of Chongzuo, Guangxi, southern China

doi:10.1016/j.jhevol.2021.103090

IVPP-IR > 中科院古脊椎所（2000年以后）

	Evolutionary trend in dental size in fossil orangutans from the Pleistocene of Chongzuo, Guangxi, southern China
	Harrison, Terry 1; Zhang, Yingqi 2,3; Yang, Liyun 4; Yuan, Zengjian 4
	2021-12-01
发表期刊	JOURNAL OF HUMAN EVOLUTION
ISSN	0047-2484
卷号	161 页码:9
通讯作者	Harrison, Terry(terry.harrison@nyu.edu)
摘要	More than 800 isolated teeth of fossil Pongo have been recovered from cave sites in the vicinity of Chongzuo in Guangxi, southern China, ranging from the Early to Late Pleistocene (2.0-0.1 Ma). These collections provide a unique regional window into the evolutionary history of orangutans over a two-million-year period at the northernmost extent of their former geographic range. Here we investigate the nature and timing of the evolutionary change in the dental size of fossil orangutans from Chongzuo. Fossil tooth size (mesiodistal length*buccolingual breadth) was compared against an extant Pongo pygmaeus standard (n = 106 individuals). During the course of the Pleistocene, orangutans from southern China exhibited a progressive reduction in overall dental size. Early Pleistocene Pongo has cheek teeth with occlusal areas that are 38.1% larger than those of extant P. pygmaeus. Those from the Middle and Late Pleistocene are 25.2% and 18.9% larger, respectively. Previously, the size difference in dentition between the Early toMiddle Pleistocene and Middle to Late Pleistocene samples was used to differentiate time-successive species of Pongo, namely Pongo weidenreichi and Pongo devosi. However, with access to larger samples and better representation of populations through time, the evidence in support of this taxonomic arrangement requires reconsideration. Diminution of the teeth now appears to be a gradual evolutionary transformation rather than a punctuated event. Moreover, the morphological features that distinguish the Chongzuo fossil orangutans from extant Pongo spp. remain uniform throughout the Pleistocene. Retaining P. weidenreichi and P. devosi as anagenetic species remains an option, but, given the current evidence, we consider it preferable to assign all of the fossil orangutans from Chongzuo to P. weidenreichi. Beyond resolving questions of alpha taxonomy, the study of fossil orangutan dental size provides a basis for estimating body mass, which has implications for interpreting the paleobiology of Pleistocene Pongo in southern China. (C) 2021 Published by Elsevier Ltd.
关键词	Pongo Dentition Taxonomy Paleobiology Primate community
DOI	10.1016/j.jhevol.2021.103090
关键词[WOS]	PONGO-PYGMAEUS-WURMBII ; GIGANTOPITHECUS-BLACKI ; BODY-MASS ; ELEPHAS-MAXIMUS ; 1ST DISCOVERY ; QUEQUE CAVE ; SANHE CAVE ; ECOLOGY ; BEHAVIOR ; FAUNAS
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000]
项目资助者	Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向	Anthropology ; Evolutionary Biology
WOS类目	Anthropology ; Evolutionary Biology
WOS记录号	WOS:000720358900004
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/19211
专题	中科院古脊椎所（2000年以后）
通讯作者	Harrison, Terry
作者单位	1.NYU, Dept Anthropol, Ctr Study Human Origins, New York, NY 10003 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Zhuang Ethnol Museum Chongzuo, Chongzuo, Guangxi, Peoples R China
推荐引用方式 GB/T 7714	Harrison, Terry,Zhang, Yingqi,Yang, Liyun,et al. Evolutionary trend in dental size in fossil orangutans from the Pleistocene of Chongzuo, Guangxi, southern China[J]. JOURNAL OF HUMAN EVOLUTION,2021,161:9.
APA	Harrison, Terry,Zhang, Yingqi,Yang, Liyun,&Yuan, Zengjian.(2021).Evolutionary trend in dental size in fossil orangutans from the Pleistocene of Chongzuo, Guangxi, southern China.JOURNAL OF HUMAN EVOLUTION,161,9.
MLA	Harrison, Terry,et al."Evolutionary trend in dental size in fossil orangutans from the Pleistocene of Chongzuo, Guangxi, southern China".JOURNAL OF HUMAN EVOLUTION 161(2021):9.