杨兵, 张雄华, 杨欣杰, 夏浩东. 内蒙古锡林浩特二叠系哲斯组腕足动物群特征及其意义[J]. 地质通报, 2017, 36(10): 1683-1690.
    引用本文: 杨兵, 张雄华, 杨欣杰, 夏浩东. 内蒙古锡林浩特二叠系哲斯组腕足动物群特征及其意义[J]. 地质通报, 2017, 36(10): 1683-1690.
    YANG Bing, ZHANG Xionghua, YANG Xinjie, XIA Haodong. Brachiopod Faunas from the Permian Jisu Honguer (Zhesi) Formation in Xilinhot, Inner Mongolia, and its significance[J]. Geological Bulletin of China, 2017, 36(10): 1683-1690.
    Citation: YANG Bing, ZHANG Xionghua, YANG Xinjie, XIA Haodong. Brachiopod Faunas from the Permian Jisu Honguer (Zhesi) Formation in Xilinhot, Inner Mongolia, and its significance[J]. Geological Bulletin of China, 2017, 36(10): 1683-1690.

    内蒙古锡林浩特二叠系哲斯组腕足动物群特征及其意义

    Brachiopod Faunas from the Permian Jisu Honguer (Zhesi) Formation in Xilinhot, Inner Mongolia, and its significance

    • 摘要: 内蒙古锡林浩特克什克腾旗哈尔呼舒剖面哲斯组灰岩中发现了大量腕足化石,经鉴定计有22属42种,以长身贝亚目和石燕贝亚目为主,化石组合面貌具有典型的哲斯动物群特征。根据其与邻区的腕足生物地层对比,确定该腕足生物群时代为中二叠世Wordian期。哲斯动物群中凉水型分子共计10属26种,约占种级总量的61.9%,暖水型分子仅1种,约占种级总量的2.4%,体现了典型的凉水型动物群特征。古生物地理区划属于北方生物地理大区。此外,哲斯组碳酸盐岩中颗粒组合属于苔藓虫-棘皮动物-腕足动物组合,代表凉水沉积环境,也印证了哲斯动物群的凉水型特征。

       

      Abstract: Lots of brachiopods (mainly consisting of Productidina and Spiriferidina) which include 22 genera and 42 species were discovered in Jisu Honguer (Zhesi) Formation, Howl Shu section, Hexigten Banner, Inner Mongolia. They show typical Zhesi fauna characteristics. Brachiopod biostratigraphic correlations with adjacent areas show that this brachiopod fauna should belong to Middle Permian Wordian period. There are 10 genera and 26 species of cold-water type elements in Zhesi fauna, which account for 61.9% of the total species, and only 1 species of warm-water element, which accounts for 2.4%, showing typical cool-water type fauna characteristics and belonging to the Boreal Realm. Furthermore, the grain combination of carbonate in Jisu Honguer (Zhesi) Formation belongs to Bryozoan-Echinoderm-Brachiopod assemblage, representing the cool water sedimentary environment, and this also confirms the cool-water characteristics of Zhesi fauna.

       

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