| 华南埃迪卡拉(震旦)系陡山沱组生物
地层学研究的新进展 |
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| 关键词:South China Ediacaran System Doushantuo Formation biostratigraph |
| 基金项目:科技部基础工作专项(2006FY120300), 中国地质调查局项目(1212010611802-2)及国家自然科学基金项目(40672022)共同资助 |
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| New Advances in the Study of Biostratigraphy of the Sinian(Ediacaran) Doushantuo Formation in South China |
| This paper describes in brief new advances in the study of biostratigraphy of the Ediacaran (Sinian) Doushantuo Formation in South China: (1) the well-preserved eight-armed, diated, Ediacara body fossil—Eoandromeda octobrachiata—was found in the black shale within the upper part of the Doushantuo Formation in Wenghui, Jiangkou County, Guizhou Province, South China. This discovery confirms for the first time the existence of the Ediacara body fossil in the Miaohe biota of the Doushantuo Formation and thus provides important evidence for the correlation between the fossiliferous positions and typical Ediacaran strata in Australia; (2) Tianzhushania ornata was first found in the 2nd Member of the Doushantuo Formation. This further confirms the presence of a lower acritarch assemblage dominated by Tianzhushania and other diverse acanthomorphic morphs in the 2nd Member and provides new evidence for correlation of these contemporaneous strata; (3) the upper acanthomorphic acritarch assemblage dominated by Tanarium was found in the 3rd Member of the Doushantuo Formation, which is associated with tubular microfossils with a circular and square cross-sections, and whose distribution is quite stable and widespread. The discovery of these paleontological data has not only further perfected the biostratigraphical sequence of the Ediacaran Doushantuo Formation in China but also provided the paleontological evidence for the subdivision and correlation of the Ediacaran System in the world. |
| YIN Chong-yu,TANG Feng,LIU Peng-ju,GAO Lin-zhi,WANG Zi-qiang,CHEN Shou-ming.2009.New Advances in the Study of Biostratigraphy of the Sinian(Ediacaran) Doushantuo Formation in South China[J].Acta Geoscientica Sinica,30(4):421-432. |
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