Crown morphology and variation of the lower premolars of Zhoukoudian Homo erectus
文献类型：期刊论文
| 作者 | Xing Song1,2; Zhou Mi3; Liu Wu1 ; xingsongh@yahoo.com.cn
|
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2009-11-01 |
| 卷号 | 54期号:21页码:3905-3915 |
| 关键词 | Shape Geometric Morphometric Zhoukoudian Premolars Fossil Hominins |
| ISSN号 | 1001-6538 |
| 文献子类 | Article |
| 英文摘要 | Traditional descriptive observation and advanced geometric morphometric are employed to study the morphological characteristics of Zhoukoudian mandibular premolars, and simultaneously with the specimens of Australopithecus, African early Homo, Homo erectus in other areas of Asia except Zhoukoudian, Europe Pleistocene fossil hominins, and recent Chinese (72 P(3) and 69 P(4) on the whole) being included as comparisons. Results suggest obvious evolutionary changes in the occlusal morphology and crown outline shape of mandibular premolars. Australopithecus P(3)s are found with extremely asymmetrical crown outlines, prominent mesial and distal vertical grooves on the buccal side, open foveas, and well-developed talonids, and P(4)s with similarly asymmetrical crown outlines, distinct mesial and distal vertical grooves on the buccal side, and "H" type of grooves combination. These characteristics are also expressed in the later hominin specimens, but with a decreased extent and lower frequency. The P(3)s of recent Chinese, slightly asymmetrical in the crown lingual contours, and P(4)s, basically symmetrical in the crown outlines, become faint or disappeared in the mesial or distal vertical buccal grooves, and decreased in the talonid size. It is suggested that Zhoukoudian mandibular premolars preserve some primitive traits of earlier hominins, including asymmetrical crown outlines and prominent mesial and distal vertical grooves of buccal side. Moreover, Zhoukoudian specimens exhibit obvious morphological variation between individuals, expressed mainly by aspects of mesial and distal vertical buccal grooves in various degrees, symmetry or asymmetry extent of crown lingual contour, relative location of polygon to the corresponding surrounding outline, as well as the relative size of talonid. When compared with Homo erectus from the other areas of Asia, Zhoukoudian specimens show their similarity with those of Xichuan and S-1, and at the same time great discrepancy with S-6 in the occlusal morphology and crown outline shape. When it comes to the relationship between specimens of Europe Pleistocene and Zhoukoudian, disparity is expressed in a stronger way than the corresponding similarity. |
| URL标识 | 查看原文 |
| WOS关键词 | GEOMETRIC MORPHOMETRIC-ANALYSIS ; NONMETRIC TRAITS ; HOMINIDS |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000271760400009 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4698]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 古脊椎动物与古人类研究所_古人类及旧石器研究室 |
| 通讯作者 | xingsongh@yahoo.com.cn |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Inst Archeol & Cultural Rel Hubei Prov, Wuhan 430077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing Song,Zhou Mi,Liu Wu,et al. Crown morphology and variation of the lower premolars of Zhoukoudian Homo erectus[J]. CHINESE SCIENCE BULLETIN,2009,54(21):3905-3915. |
| APA | Xing Song,Zhou Mi,Liu Wu,&xingsongh@yahoo.com.cn.(2009).Crown morphology and variation of the lower premolars of Zhoukoudian Homo erectus.CHINESE SCIENCE BULLETIN,54(21),3905-3915. |
| MLA | Xing Song,et al."Crown morphology and variation of the lower premolars of Zhoukoudian Homo erectus".CHINESE SCIENCE BULLETIN 54.21(2009):3905-3915. |
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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