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Article: New material of Gobicyon (Carnivora, Amphicyonidae, Haplocyoninae) from northern China and a review of Aktaucyonini evolution

Papers in Palaeontology - Volume 7 Issue 1 - Cover
Publication: Palaeontology
Volume: 7
Part: 1
Publication Date: Febuary 2021
Page(s): 307 327
Author(s): Qigao Jiangzuo, Shiqi Wang, Chunxiao Li, Danhui Sun, and Xiaoxiao Zhang
DOI: 10.1002/spp2.1283
Addition Information

How to Cite

JIANGZUO, Q., WANG, S., LI, C., SUN, D., ZHANG, X. 2021. . Papers in Palaeontology, 7, 1, 307-327. DOI: /doi/10.1002/spp2.1283

Author Information

  • Qigao Jiangzuo - Key Laboratory of Vertebrate Evolution & Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology & Paleoanthropology Chinese Academy of Sciences Beijing 100044 China
  • Qigao Jiangzuo - CAS Center for Excellence in Life & Paleoenvironment Beijing 100044 China
  • Qigao Jiangzuo - University of Chinese Academy of Sciences Beijing 100049 China
  • Qigao Jiangzuo - Division of Paleontology American Museum of Natural History New York 10024 USA
  • Shiqi Wang - Key Laboratory of Vertebrate Evolution & Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology & Paleoanthropology Chinese Academy of Sciences Beijing 100044 China
  • Shiqi Wang - CAS Center for Excellence in Life & Paleoenvironment Beijing 100044 China
  • Shiqi Wang - CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China
  • Chunxiao Li - Key Laboratory of Vertebrate Evolution & Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology & Paleoanthropology Chinese Academy of Sciences Beijing 100044 China
  • Chunxiao Li - CAS Center for Excellence in Life & Paleoenvironment Beijing 100044 China
  • Chunxiao Li - University of Chinese Academy of Sciences Beijing 100049 China
  • Danhui Sun - Key Laboratory of Vertebrate Evolution & Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology & Paleoanthropology Chinese Academy of Sciences Beijing 100044 China
  • Danhui Sun - CAS Center for Excellence in Life & Paleoenvironment Beijing 100044 China
  • Danhui Sun - University of Chinese Academy of Sciences Beijing 100049 China
  • Xiaoxiao Zhang - Key Laboratory of Vertebrate Evolution & Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology & Paleoanthropology Chinese Academy of Sciences Beijing 100044 China
  • Xiaoxiao Zhang - CAS Center for Excellence in Life & Paleoenvironment Beijing 100044 China
  • Xiaoxiao Zhang - University of Chinese Academy of Sciences Beijing 100049 China
  • Xiaoxiao Zhang - Tianjin Natural History Museum Tianjin 300201 China

Publication History

  • Issue published online: 08 March 2021
  • Manuscript Accepted: 06 May 2019
  • Manuscript Received: 16 December 2018

Funded By

Strategic Priority Research Program of Chinese Academy of Sciences. Grant Numbers: XDA20070203, XDB26000000
Key Frontier Science Research Program of the Chinese Academy of Sciences. Grant Numbers: QYZDY‐SSW-DQC‐22, GJHZ1885
Natural Science Foundation of Ningxia. Grant Number: NZ17227
National Natural Science Foundation of China
China Scholarship Council

Online Version Hosted By

Wiley Online Library
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Abstract

The aberrant carnivore Gobicyon has been known for more than 80 years, but the evolutionary position and taxonomic diversity of this animal remain unclear due to the paucity of the known fossils. Here, we report a much richer and better preserved assemblage of Gobicyon material from the Tongxin and Hezheng areas, northern China. Two new species, Gobicyon yei sp. nov. from the early middle Miocene in Tongxin and Gobicyon acutus sp. nov. from the late middle Miocene in Hezheng are recognized. Much better material of Gobicyon macrognathus and one isolated tooth of Gobicyon zhegalloi from Tongxin are also described in detail. Gobicyon is recognized as a derived haplocyonid. A phylogenetic analysis of Gobicyon and related taxa has been performed for the first time. The phylogenetic tree suggests a close relationship of Aktaucyon and Gobicyon (Aktaucyonini). Among the taxa traditionally included in haplocyonids, Haplocyonopsis is the closest to Aktaucyonini, as supported by its centrally located M1 protocone and a uniformly distributed M1 lingual cingulum. The most significant evolutionary trends of Gobicyon are the reduction of the posterior molars (M2 and M3) and the strengthening of P4 and M1, suggesting a forward shift of crushing function along the tooth row.

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