| 滇东伊迪卡拉（震旦）系顶部旧城段多样宏体化石群的发现? |
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| 引用本文： | 唐烽,尹崇玉,刘鹏举,王自强,高林志.滇东伊迪卡拉（震旦）系顶部旧城段多样宏体化石群的发现?[J].古地理学报,2007,9(5):533-540. |
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| 作者姓名： | 唐烽 尹崇玉 刘鹏举 王自强 高林志 |
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| 作者单位： | 1.中国地质科学院地质研究所, 北京 100037;2.中国地质科学院地层学及古生物学重点实验室, 北京 100037;3.中国地质大学(北京)地球科学与自然资源学院, 北京 100083 |
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| 基金项目： | 国家自然科学基金
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中国地质调查局资助项目 |
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| 摘 要： | 中国云南东部晋宁、江川地区的伊迪卡拉（震旦）系顶部灯影组旧城段新发现了多样的宏体化石群，除了丰富的Vendotaenia与Tyrasotaenia类化石以外，以形体较大的Tawuia类和Longfengshaniaceae科等具固着构造的底栖多细胞藻类化石占据优势，另有一些形态奇特、亲缘关系不明的宏体化石，该组合与华南陡山沱组和灯影组石板滩段的宏体化石组合相比存在着明显的差别。依据形态特征，本文概述了部分产自江川旧城段的具有不同类型固着构造的底栖藻类和归属不明的宏体化石特征。华南滇东地区旧城段形态多样的宏体藻类化石的发现，进一步表明伊迪卡拉纪末期存在后生植物的多样化发展。这一时期浮游微生物和后生植物的共同繁盛可能为早寒武世“澄江生物群”的爆发奠定了生态基础。
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| 关 键 词： | 滇东地区 埃迪卡拉(震旦)系 旧城段 宏体化石组合 |
| 文章编号： | 1671-1505（2007）05-0533-08 |
| 修稿时间： | 2007-06-05 |
Discovery of diverse macrofossil assemblages from the Jiucheng Member of uppermost Ediacaran in eastern Yunnan |
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| Tang Feng,Yin Chongyu,Liu Pengju,Wang Ziqiang,Gao Linzhi.Discovery of diverse macrofossil assemblages from the Jiucheng Member of uppermost Ediacaran in eastern Yunnan[J].Journal of Palaeogeography,2007,9(5):533-540. |
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| Authors: | Tang Feng Yin Chongyu Liu Pengju Wang Ziqiang Gao Linzhi |
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| Institution: | 1.Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 ;2.Key Laboratory of Stratigraphy and Paleontology, Chinese Academy of Geological Sciences, Beijing 100037;3.School of Earth Sciences and Natural Resources, China University of Geoscience(Beijing)s, Beijing 100083 |
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| Abstract: | A highly diversified macrofossil assemblage was discovered from the Jiucheng Member of the uppermost Ediacaran of Jinning and Jiangchuan areas in eastern Yunnan.In addition to abundant Ven- dotaenia and Tyrasotaenia,large multicellular benthos such as Tawuia-like and Longfengshaniaceae fossils with diverse holdfast structures,have a distinct dominance,while there are still some other macrofossils with peculiar configurations as well as indistinct relatives.There is an obvious distinction between this as- semblage and the macrofossil assemblages from the Doushantuo Formation and the Shibantan Member of the Dengying Formation in South China.This paper has outlined the characteristics of some of the multicellular fossils from the Jiucheng Member at Jiangchuan.They include some macrofossils with different types of holdfast structures,and indistinct affinities as well.The discovery of the diverse-shaped macrofossil assem- blages from the Jiucheng Member in eastern Yunnan indicates the diversification and radiation of meta- phytes during the latest Ediacaran Period.The contemporary radiations of phytoplankton and benthic meta- phyte probably made a significant contribution to the Early Cambrian explosion of animals. |
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| Keywords: | eastern Yunnan Ediacaran Jiucheng Member macrofossil assemblage |
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