• JIANG Shan

  JIANG Shan

  1 Natural History Museum of Guangxi, Nanning, Guangxi 530012, China
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• JI Shu-an

  JI Shu-an

  2 Institute of Geology, Chinese Academy of Geological Sciences; Key Laboratory of Stratigraphy and Paleontology, Ministry of Land and Resources; Beijing 100037, China
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• MO Jinyou

  MO Jinyou

  1 Natural History Museum of Guangxi, Nanning, Guangxi 530012, China
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Many thanks are given to Prof. Liu Yongqing, Prof. Li Daqing, and Guo Xiangqi, Peng Nan, Xue Peilin for their help in the field; to Mr. Cui Guihai for skillful preparation specimens and Prof. Liu Jun for his comments and improvement on the manuscript. This research was funded by the China Geological Survey (Grant No. 1212011120139).