New Data of Microfossils from the Ediacaran Doushantuo Formation in the East Yangtze Gorges Area, Hubei Province, South China
详细信息
- 责任者：Zeng Xiongwei (Wuhan Center ; China Geological Survey ; Wuhan 430205 ; China) ; Chen Xiaohong
- 刊名：Geology and Mineral Resources of South China
- 出版年：2013
- 卷期：29(3)
- 关键词：微体化石 ; microfossils ; 湖北 ; Hubei Province
- 页码：p.192-198
- 图表：4 illus., 28 refs.
- 分类号：1100
- issnNo：ISSN1007-3701
- isbnNo：CN42-1417/P
摘要
Based on hundreds of thin sections from Niuping and new measured Xiaofenghe sections,we further confirmed that two different microfossil assemblages can be recognized separately in the lower and upper Doushantuo Formation.The lower assemblage which is characterized by the large acanthomorphic acritarch Tianzhushania,includes acritarchs(Appendisphaera magnifica,Leiosphaeridia tenuissima,Meghystrichosphaeridium chadianensis,Tanarium sp.,Tianzhushania fissura,T.spinosa,T.sp.,Unnamed A),filamentous cyanobacteria(Oscillatoriopsis longa,Polytrichoides induviatus,Salome hubeiensis,Siphonophycus kestron,S.robustum) and multicelluar algae(Sarcinophycus palilloformis,Unnamed multicelluar alga A).The upper assemblage characterized by the occurrence of abundant spherical colonies(with individual sphere 50-140 μm in size),consists of acritarchs(Leiosphaeridia tenuissima,Knollisphaeridium maximum,K.sp.,Meghystrichosphaeridium perfectum,Unnamed C),and cyanobacteria fragments.Our data are consistent with previous reports by Yin et al.(Acta Geologica Sinica,2011,85:283-295) and Liu et al.(Precambrian Research,2013,225:29-43).
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