| A new section of Kaili Formation （Cambrian） and a biostratigraphic study of the boundary interval across the undefined Cambrian Series 2 and Series 3 at Jianshan,Jianhe County,China with a discussion of global correlation based on the first appearance datum of Oryctocephalus indicus （Reed, 1910） |
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| 作者姓名： | Yuanlong Zhao, Jinliang Yuan, Shanchi Peng, Loren E. Babcock, Jin Peng, Qingjun Guo, Jihpai Lin, Tongshu Tai, Ruidong Yang, Yuxian Wang |
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| 作者单位： | [1]College of Resource and Environment Engineering, Cruizhou University （Ca~/iaguan Campus）, Cruiyang 550003, China; [2]Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China; [3]State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China; [4]School of Earth Sciences, Ohio State University, Columbus, OH 43210, USA; [5]Department of Earth Sciences, Nanjing University, Nanjing 210093, China; [6]State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; [7]Agency of Natural Protected Area of Gedong Fossil Fauna, Kaili 556000, China |
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| 基金项目： | This work was supported by National Natural Science Foundation of China （Grant Nos. 40672018 and 40762001）, the Foundation of the Mobile Project of Science and Technology of Guizhou Province （Grant No. Gui Ji. 2007-4004）, the Foundation of the Governor of Guizhou Province （Gui E. 2006-7）, the Key Project of International cooperation of Guizhou Science and Technology （Gui. Co. G. [2008]700110]）, and the Alexander von Humboldt Foundation. The authors thank graduate students Yang Hong, Yao Lu, Chen Xin, and Li Binxia at Guizhou University for their assistance in the field work. Special thanks are go to Igor Korovnicov （Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences） for providing the photographs of specimens collected from the Kuonamka Formation at the Molodo River, Siberia, Russia, and to Dr. Robert R. Gaines （Pomona College, USA） for English writing of this manuscript. |
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| 摘 要： | A trilobite biostratigraphic study of a new section of the Kaili Formation at Jianshan, Chuandong Village, Jianhe County, Guizhou is reported. Additional occurrences of key species associated with the Ovatoryctocara granulata-Bathynotus holopygus Zone and the overlying Oryctocephalus indicus Zone that were originally defined from the trilobite assemblages at the WuliuZengjiayan section of the Kaili are reported from this new section. The first appearance datum （FAD） of Oryctocephalus indicus occurs at the 44.52 m above the base of the unit. Based on study of abundant specimens （n = 800） from the Kaili Formation, we argue that Oryctocephalus indicus is a widespread taxon with a global distribution. O. reticulatus （Lermontova, 1940） from the middle part of the Kounamkites Zone of the Amganian Stage in the Molodo River region of Siberia and O. americanus （Sundberg and McCollum, 2003） from Nevada, North America are similar to representatives of O. indicus which occur in the O. indicus Zone of the Kaili Formation. O. reticulatus and O. americanus are here synonymized with O. indicus （Reed, 1910）. This study strengthens the Wuliu-Zengjiayan section of the Kaili Formation as a candidate section for a Global Stratotype for the base of the unnamed Cambrian Series 3.
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| 关 键 词： | 丛书 塞武记人 贵州 中国 |
| 收稿时间： | 2008-03-15 |
| 修稿时间： | 2008-05-04 |
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