New fossils of the Early Pleistocene Equus huanghoensis (Equidae, Perissodactyla) from Nihewan in Hebei province of China

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• 作者：YongXiang Li ; YunXiang Zhang ; BoYang Sun ; Hong Ao…
• 关键词：Nihewan ; Early Pleistocene ; Equus huanghoensis ; new fossils
• 刊名：Science China Earth Sciences
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：59
• 期：1
• 页码：83-94
• 全文大小：1,503 KB
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• 作者单位：YongXiang Li (1) (2)
  YunXiang Zhang (1) (2)
  BoYang Sun (3)
  Hong Ao (2)
  XiangXu Xue (1) (2)
  
  1. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, 710069, China
  2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China
  3. Tianjin Museum of Natural History, Tianjin, 300201, China
  
• 刊物主题：Earth Sciences, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1869-1897

文摘

This paper describes new fossils of Equus huanghoensis from an Early Pleistocene bed in Nihewan, Hebei Province, which confirms the classification of E. huanghoensis by Chinese researchers. The new fossils include a relatively complete male skull and mandible with all upper and lower dentition, a broken female skull with fragment of mandible and a broken Mc III of Equus sp. The fossils were collected from the Yangshuizhan site of Nihewan. The age of the formation is about 1.6 Ma. The new materials verify some classification characteristics based on teeth published in previous descriptions. These characteristics include large teeth size, short protocone, and tilted protoloph and metaloph. We have added to these characteristics of large skull size, a developed protuberantia supramagna, pentagonal nuchal side, weak Pli cabaline, simple enamel plications; a series of new characteristics strikingly different from the other Equus horses. The broken Mc III is similar to Equus qingyangensis from Qingyang, Gansu