Early Mammut from the Upper Miocene of northern China, and its implications for the evolution and differentiation of Mammutidae

• 作者： WANG Shi-Qi ^1,2 LI Yu ^1,3 Jaroon DUANGKRAYOM ^1,3,4 CHEN Shao-Kun ⁵ HE WenCHEN Shan-Qin ⁶
• 作者单位：
  1.  Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044, China

  2.  CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101, China

  3.  University of Chinese Academy of Sciences Beijing 100049, China

  4.  Northeastern Research Institute of Petrified Wood and Mineral Resources, Nakhon Ratchasima Rajabhat UniversityNakhon Ratchasima 30000, Thailand

  5.  Three Gorges Institute of Paleoanthropology, China Three Gorges Museum Chongqing 400015, China

  6.  Hezheng Paleozoological Museum Hezheng, Gansu 731200, China
• 提交时间：2017-11-07

摘要 ： Mammut is the terminal taxon of the proboscidean group Mammutidae, which survived to the Late Pleistocene. Although this genus was widely distributed in the Pliocene of Eurasia and the Pleistocene of North America, little is known about its early evolution. Here, we report on Mammut cf. M. obliquelophus from the Upper Miocene of northern China based on new fossil material, including an almost complete juvenile cranium and other remains, which show many primitive features within Mammutidae and clearly demonstrate the morphological evolution of Mammut. The strongly laterally expanded lateral wing of the occiput and the presence of basal constriction of the incisive fossa display cranial similarity between Mammut cf. M. obliquelophus and both Eozygodon morotoensis and Choerolophodon guangheensis, early representatives of the Mammutidae and Choerolophodontidae, respectively, indicating the close relationship between these two groups: both of them are located at the basal phylogenetic positions in Elephantimorpha. This result is further confirmed by a cladistic analysis.

• 分类： 生物学 >> 动物学
• 引用： ChinaXiv:201711.01916 (或此版本 ChinaXiv:201711.01916V1)
  doi:10.12074/201711.01916
  CSTR:32003.36.ChinaXiv.201711.01916.V1
• 推荐引用方式： WANG Shi-Qi,LI Yu,Jaroon DUANGKRAYOM,CHEN Shao-Kun,HE WenCHEN Shan-Qin.(2017).Early Mammut from the Upper Miocene of northern China, and its implications for the evolution and differentiation of Mammutidae.古脊椎动物学报.CSTR:32003.36.ChinaXiv.201711.01916.V1 (点此复制)