A simulation experiment on phosphatized spherical microfossils  

作　　者：Jian Zhang Hong Hua 

机构地区：[1]State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University

出　　处：《Chinese Science Bulletin》2014年第3期344-348,共5页

基　　金：supported by the National Natural Science Foundation of China(41030209 and 41272020);the National Basic Research Program of China(2013CB835001)

摘　　要：The identification and characterization of the phosphate preservation of the spherical microfossils in the Ediacaran Doushantuo time and the Early Cambrian has long been controversial.Modern artificial simulation experiments of phosphate animal eggs can provide scientific evidence to settle the aforementioned disputes.This experiment simulated environmental changes to observe the early morphological changes of the Bluntnose black bream eggs(Megalobrama amblycephala).It was found that the eggs can show a different morphology in the phosphate environment and that these eggs exhibited considerable morphological variations under different conditions.Thus,those eggs cannot be ascribed to the same species based only on the features.The experimental results are expected to provide a useful reference for the identification of phosphatized microfossils and provide a more empirical basis for their genesis.The identification and characterization of the phosphate preservation of the spherical microfossils in the Ediacaran Doushantuo time and the Early Cambrian has long been controversial. Modern artificial simulation experiments of phosphate animal eggs can provide scientific evidence to settle the aforementioned disputes. This experiment simulated environmental changes to observe the early morphological changes of the Bluntnose black bream eggs （Megalobrama amblycephala）. It was found that the eggs can show a different morphology in the phosphate environment and that these eggs exhibited con- siderable morphological variations under different conditions. Thus, those eggs cannot be ascribed to the same species based only on the features. The experimental results are expected to provide a useful reference for the identification of phosphatized microfossils and provide a more empirical basis for their genesis.

关 键 词：仿真实验 磷化 微化石 球状 微体化石 形态变化 形态学变化 磷酸盐 

分 类 号：Q915.2[天文地球—古生物学与地层学]