根据王参 1井和界 3井所产的牙形石动物群的分析 ,讨论了辽河断陷东部存在晚寒武世长山组 ;早奥陶世下马家沟组和冶里组的地层 ,与国内外有关的地区进行了对比。同时 ,以实例说明了仅仅根据岩性和电性划分出的晚寒武世凤山组、崮山组 ,中寒武世张夏组以及早奥陶世上马家沟组、亮甲山组层尚需进一步的系统的牙形石生物地层工作来核实或修正。 Based on the analysis of the conodont fauna in Wangshen-1 and Well-3, the Late Cambrian Changshan Formation was discussed in the eastern part of the Liaohe Fault Depression. The strata of the Lower Ordovician Xiamajiagou Formation and the Yeli Formation, Outside the relevant areas were compared. At the same time, an example is given to illustrate that the Late Cambrian Fengshan Formation, the Jianshan Formation, the Middle Cambrian Zhangxia Formation and the Early Ordovician Upper Majiagou Formation and Liangjishan Formation, which are only based on lithology and electrical properties, System of conodont bio-stratum work to verify or correct.