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塔中隆起区的良里塔格组含菌藻类微生物岩、植物类的钙藻、原生动物中的有孔虫、后生动物中的海绵、珊瑚、苔藓虫、介形类、三叶虫......
兴安岭群龙江组产Ephemeropsis trisetalis等热河生物群分子,九峰山组产富含Cicatricosis porites,Pilosisporites,Concavissimispori......
利用傅里叶变换图像处理技术来测定针叶材侧柏横切面早材细胞排列,把表示每一个细胞的半径为十个像素点的圆盘点图,进行傅里叶变换,再......
Distribution of selenium and arsenic in differentiated multicellular eukaryotic fossils and their si
We present variation patterns of trace elements within different sequences of the Ediacaran Doushantuo Formation(DST,635......