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贵州紫云坝寨上泥盆统弗拉阶中的放射虫Helenifore robustum动物群
  • 期刊名称:王玉净、罗辉,2009。微体古生物学报。26(2),129-138。
  • 时间:0
  • 分类:Q915.811.3[天文地球—古生物学与地层学;生物学—古生物学] P534.44[天文地球—古生物学与地层学;天文地球—地质学]
  • 作者机构:[1]中国科学院南京地质古生物研究所,南京210008
  • 相关基金:本文获得国家自然科学基金(40772004)的资助.
  • 相关项目:华南泥盆纪放射虫的多样性研究
中文摘要:

作者在贵州紫云县坝寨上泥盆统弗拉阶响水洞组硅质岩中发现了Helenifore robustum放射虫动物群,共描述7属13种,其中包括1个未定种和2个新种。作者还讨论了这个动物群的特征及与国内外的对比关系,并指出产于我国云南、贵州、广西和泰国北部的这个动物群是属于古特提斯洋中原地型浮游动物群,而在美国内华达州Roberts山脉推覆体的硅质岩和澳大利亚东部新英格兰造山带的硅质粉砂岩中发现的这个动物群是后来的板块运动把这些含有H.robustum动物群的地层碎块拼贴到北美和东澳大陆上去的结果,属于异地型动物群。

英文摘要:

The Helenifore robustum radiolarian fauna is discovered in the Cherts of the Xiangshuidong Formation of early Late Devonian (Frasnian) at the Bazhai village of Ziyun County, Guizhou Province. Thirteen species (including one indeterminata and two new ones) assigned to seven genera are discribed. Based on the characteristics and com- parative relation of this fauna between China and other countries, this fauna found in Yunnan, Guizhou, Guangxi of China and the northern parts of Thailand should belong to the planktonic fauna of the autochthonous position in the Palaeo-Tethys, and that one in the Slaven Chert of Roberts Mountains allochthon, Nevada, America and in the sili- ceous siltstones of New England Orogen, East Australia may be one allochthonous fauna, where the plate movement put together these stratigraphic fragments of the Helenifore robusturn bearing radiolarian fauna on the Continents of North America and East Australia.

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