Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12136/231
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Title: Hominin teeth from the Middle Pleistocene site of Yiyuan, Eastern China
Authors: Xing, Song
Sun, Chengkai
Martinón-Torres, María
Bermúdez de Castro, José María
Han, Fei
Zhang, Yingqi
Liu, Wu
Keywords: Homo erectus;Dental materials;Morphology;Micro-CT
Issue Date: Jun-2016
Publisher: Elsevier
Citation: Journal of Human Evolution, 2016, 95, 33-54
Abstract: In 1981–1982, some hominin fossils, including a relatively complete skull and seven isolated teeth, were recovered from the Middle Pleistocene site of Yiyuan in Eastern China. In the present study we provide a detailed metric and morphological comparison of the Yiyuan dental sample in order to characterize better the variability of the human populations that inhabited China during the Middle Pleistocene. Aside from taxonomic and phylogenetic questions, the lack of understanding and/or knowledge about the morphological variability of these populations have caused concern about the human versus non-human nature of some of the hominin dental remains found in East Asia during the Early and the Middle Pleistocene. Thus, our study aims to present a detailed description and comparison of the Yiyuan isolated teeth to 1) discuss and support their human nature and 2) to explore their taxonomic affinities with regard to other penecontemporaneous populations from Asia. Our results clearly differentiate the Yiyuan sample from Pongo specimens and support a human attribution for the Yiyuan material. Our analyses also suggest that the Yiyuan teeth form a morphologically coherent group together with samples from Zhoukoudian, Chaoxian and Hexian. They are different from the more derived specimens from Panxian Dadong, suggesting a pattern of biogeographic isolation and different evolutionary trends between northern and southern China during the Middle Pleistocene. In addition, and despite sharing a common morphological bauplan with Homo erectus sensu stricto (s.s.), the Yiyuan, Zhoukoudian and Hexian teeth are also different from the Indonesian Early Pleistocene samples. In particular, the expression of a highly crenulated or dendritic enamel-dentine surface could be unique to these groups. Our study supports the notion that the taxonomy of the Pleistocene hominins from Asia may have been oversimplified. Future studies should explore the variability of the Asian specimens and reconsider whether all the samples can be attributed to H. erectus s.s.
URI: http://hdl.handle.net/20.500.12136/231
ISSN: 0047-2484
1095-8606
DOI: 10.1016/j.jhevol.2016.03.004
metadata.dc.relation.publisherversion: https://doi.org/10.1016/j.jhevol.2016.03.004
Type: Article
Appears in Collections:Paleobiología

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