Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution
文献类型：期刊论文
| 作者 | Zhao, Lingxia; Lu, Qingwu; Zhang, Wending; zhaolingxia@ivpp.ac.cn |
| 刊名 | J HUM EVOL
 |
| 出版日期 | 2008 |
| 卷号 | 54期号:2 |
| 关键词 | Dental Development Histological Reconstruction Late Miocene China Microstructure Orangutan Yunnan Death Hominoids Thailand |
| ISSN号 | 0047-2484 |
| 英文摘要 | The late Miocene hominoid Lufengpithecus from Yunnan Province, China, is crucial for understanding hominoid evolution in Asia. Given that age at first permanent molar emergence is a key life-history trait in primates, the present study determined the age at death of the Lufengpithecus lufengensis juvenile PA868, which was in the process of erupting its first molar. Using a perikymata periodicity of 7-11 days, along with estimation of cusp formation time and the postnatal delay of crown mineralization, perikymata counts obtained from the permanent central incisor and canine germs indicate that the age at death of PA868 was 2.4-4.5 years based on the central incisor germ, and 2.5-4.7 years based on the canine germ. The age at the first molar emergence was actually slightly younger (by about 0.3 years), as demonstrated by tiny wear facets on this tooth, which indicate that gingival emergence had occurred sometime before death. The average age at first molar emergence of Lufengpithecus lufengensis PA868 is estimated to be 3.2-3.3 years, with a range of 2.1-4.4 years. In comparison to extant primates and other fossil hominoids, the life history of Lufengpithecus lufengensis is similar to that of extant great apes and the Miocene hominoids Afropithecus turkanensis and Sivapithectis parvada, as well as Plio-Pleistocene Australopithecus, and different from monkeys, gibbons, and modem humans. (C) 2007 Elsevier Ltd. All rights reserved. |
| URL标识 | 查看原文 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4868]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | zhaolingxia@ivpp.ac.cn |
| 推荐引用方式 GB/T 7714 | Zhao, Lingxia,Lu, Qingwu,Zhang, Wending,et al. Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution[J]. J HUM EVOL,2008,54(2). |
| APA | Zhao, Lingxia,Lu, Qingwu,Zhang, Wending,&zhaolingxia@ivpp.ac.cn.(2008).Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution.J HUM EVOL,54(2). |
| MLA | Zhao, Lingxia,et al."Age at first molar emergence in Lufengpithecus lufengensis and its implications for life-history evolution".J HUM EVOL 54.2(2008). |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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