Zonation of Conodonts and Characteristics of the Conodont Fauna from the Guadalupian-Lopingian Boundary Strata in Pelagic Chert Sequences in Guangxi and the Basal Boundary of the Lopingian Series

 
  • 广西二叠纪深海硅质岩系中瓜德鲁普统至乐平统界线地层牙形石分带及动物群特征
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