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《Geological Science and Technology Information》 2008-03
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Early Triassic Trace Fossils and Their Paleoenvironmental Significance in Huangshi of Hubei,Central China

MA Hui-zhen1a, LUO Mao1a, GONG Yi-ming1b,1c,2a,2b(1a.Graduate School; 1b.Faculty of Earth Sciences; 1c.Key Laboratory of Biogeology andEnvironmental Geology of Ministry of Education, China University of Geosciences,Wuhan 430074, China; 2a. Institute of Resources and Environment;2b.Key Laboratory of Biogenic Traces & Sedimentary Minerals of HenanProvince, Henan Polytechnic University, Jiaozuo Henan 454003, China)  
Six ichnogenera and nine ichnospecies are reported and described from the Early Triassic Jialingjiang Formation in Huangshi of Hubei, central China. These race fossils, including Helminthopsis abeli,Palaeophycus tubularis, Palaeophycus cf. heberti, Phycodes palmatus, Planolites beverleyensis, Planolites ichnosp.1, Planolites ichnosp.2, Rhizocorallium cf. jenense,Scalarituba cf. missouriensis, are designated to be Cruziana ichnofacies. According to the trace fossils and physical sedimentary characteristics of the first and third members of the Jialingjiang Formation, it can be inferred that sedimentary environments underwent changes from the tidal flat to neritic shelf to evaporating tidal flat. The present study demonstrates that similarities in both features and evolution of trace fosslis among the Sinan-Cambrian, Late Devonian Frasnian-Famennian and Early Triassic, may be related to phylogenetic evolution between biology and environment .
【Fund】: 教育部高等学校博士学科点专项科研基金项目(2004000127);; 国家自然科学基金项目(40472020)
【CateGory Index】: Q911
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