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1. Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China; 2. Research Center of Paleontology and Stratigraphy, Jilin University, Changchun 130026, China; 2. Forschungsinstitut Senckenberg, Frankfurt/M, D-60325, Germany; 4. School of Geology, Mongolian University of Science and Technology, Ulaanbaatar 46/520, Mongolia; 5. Institute of Petroleum Geology, Russian Academy of Sciences, SB., Novosibirsk 630090, Russia |