Preliminary notes on soft-bodied fossil concentrations from the Early Cambrian Chengjiang deposits  

作　　者：HAN Jian SHU Degan ZHANG Zhifei LIU Jianni ZHANG Xingliang YAO Yang 

机构地区：[1]Department of Geology and Key Laboratory for Continental Dynamics, Northwest University, Xi'an 710069, China [2]School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

出　　处：《Chinese Science Bulletin》2006年第20期2482-2492,共11页

基　　金：the National Natural Science Foundation of China （Grant Nos. 40332016, 32070207）; the Program for Changjiang Scholars and Innovative Research Team in University （PCSIRT）.

摘　　要：The efforts of labor-intensive collecting in the Early Cambrian Chengjiang deposits in eastern Yunnan Province, China led to the discovery of many horizons containing exceptionally well preserved soft-bodied fossil concentrations, many of which can be assigned to either monospecific concentrations or paucispecific concentrations. The features of these fossil concentrations support the hypothesis that frequent storm events producing tempestites mainly contributed to the preservation of abundant soft- bodied fossils in the Chengjiang deposits, and indi- cate that the balance of the ecological web in this region was probably frequently destroyed or upset by such storm events during that geological time. Ani- mals in a fossil assemblage in such fossil concentra- tions probably occupied similar ecological biotopes.The efforts of labor-intensive collecting in the Early Cambrian Chengjiang deposits in eastern Yunnan Province, China led to the discovery of many horizons containing exceptionally well preserved soft-bodied fossil concentrations, many of which can be assigned to either monospecific concentrations or paucispecific concentrations. The features of these fossil concentrations support the hypothesis that frequent storm events producing tempestites mainly contributed to the preservation of abundant softbodied fossils in the Chengjiang deposits, and indicate that the balance of the ecological web in this region was probably frequently destroyed or upset by such storm events during that geological time. Animals in a fossil assemblage in such fossil concentrations probably occupied similar ecological biotopes.

关 键 词：早寒武纪 保存 SFC 化石蛋 沉积物 

分 类 号：Q915.21[天文地球—古生物学与地层学]