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古脊椎动物学报 ›› 2020, Vol. 58 ›› Issue (1): 16-23.DOI: 10.19615/j.cnki.1000-3118.191121

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山西寿阳二叠系上部的锯齿龙类和二齿兽类化石

伊剑1,2,3, 刘俊1,2,3,*()   

  1. 1 中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室 北京 100044
    2 中国科学院生物演化与环境卓越创新中心 北京100044
    3 中国科学院大学地球与行星科学学院 北京 100049
  • 收稿日期:2019-08-09 出版日期:2020-01-20 发布日期:2020-01-20
  • 基金资助:
    中国科学院战略性先导科技专项(B类)(XDB26000000);国家自然科学基金资助(41572019);国家自然科学基金资助(41661134047)

Pareiasaur and dicynodont fossils from upper Permian of Shouyang, Shanxi, China

YI Jian1,2,3, LIU Jun1,2,3,*()   

  1. 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
    2 CAS Center for Excellence in Life and Paleoenvironment Beijing 100044
    3 College of Earth and Planetary Sciences, University of Chinese Academy of Sciences Beijing 100049
  • Received:2019-08-09 Published:2020-01-20 Online:2020-01-20
  • Contact: *liujun@ivpp.ac.cn

摘要:

中国二叠纪四足类的研究由来已久,在新疆和内蒙古大青山发现了大量二齿兽类(Dicynodontia)化石,而在华北地层区则以锯齿龙类(Pareiasauria)化石为主,还没有发现二齿兽类。近年来,在山西寿阳二叠系中发现了产自上石盒子组中的锯齿龙类和产自孙家沟组中的二齿兽类化石。根据髂骨的形态特征,相较于二叠石千峰龙(Shihtienfenia permica), 新的锯齿龙类化石与多齿河南龙(Honania complicidentata)更相似。这表明济源动物群(河南龙组合带)可能在山西的上石盒子组中也有分布。根据头骨的特征,新二齿兽类化石属于隐齿兽目(Cryptodontia), 可能是其中的某个支系在中国的第一个代表。

关键词: 山西寿阳, 二叠系, 上石盒子组, 孙家沟组, 锯齿龙, 二齿兽

Abstract:

Chinese Permian tetrapods have been studied for decades. Many dicynodont fossils were reported from Xinjiang and Nei Mongol, only several pareiasaur species were reported in Shanxi (North China), where no dicynodonts have been reported. In this paper, a pareiasaur specimen and a dicynodont specimen are reported from the Shangshihezi Formation and the Sunjiagou Formation of Shouyang, Shanxi respectively. The pareiasaur specimen is more similar to Honania than Shihtienfenia based on iliac morphology. This suggests that the element of the Jiyuan Fauna (Honania Assemblage Zone) also occurs in the Shangshihezi Formation of Shanxi. The dicynodont fossil, an incomplete skull, is referred to Cryptodontia, and is probably the first representative of a new subclade within Cryptodontia in China.

Key words: Shouyang, Shanxi, Shangshihezi Formation, Sunjiagou Formation, Permian, pareiasaur, dicynodont

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