According to the conodont and fusulinid fossils,their ages are determined to be Devonian-Permian.
根据所含化石确定地层形成时代为
纪至二叠纪。

纪(或系)的(大约4.2亿至3.6亿年前的一段时间,在这段时间里,许多植物包括最早的树木出现在陆地
)
纪(the Devonian)
物;
世;中
纪
纪
系According to the conodont and fusulinid fossils,their ages are determined to be Devonian-Permian.
根据所含化石确定地层形成时代为
纪至二叠纪。
The Devonian coal in Luquan,Yunnan Province,is a typical liptobiolite in China.
禄劝煤是我国典型的残植煤,是
系煤岩的代表。
The allochthon consists of the Presinian,Sinian and Cambrian system.The autochthon comprises the Devonian and Carboniferous system.
推覆构造的外来系统为前震旦系、震旦系和寒武系,原地系统为
系和石炭系。
The Shuangwang gold-bearing albitite zone, which is composed of stratabound albitite, albitite breccia occurred conformably in the Xinghongpu Group, Devonian silt-slate.
双王含金钠长石岩带主要为层状,产于
系星红铺组粉砂质板岩中。
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