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Phosphatic microspherules and their geobiological implications from the Frasnian-Famennian transitio
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广西上泥盆统斜坡-盆地相灰岩中存在着数量丰富、保存完好的磷质微球粒.其大小250μm±,球状、椭球状,部分微球粒表面具脐状或......
