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河北唐山地区的奥陶纪地层发育良好,化石丰富,为华北型奥陶系的标准剖面。1975—1976河北省地质局第二区域地质测量大队在这一地区做了大量工作,采集的化石经笔者等鉴定和初步研究。在河北二区测队同志工作的基础上,1979年10月,笔者等对唐山市赵各庄长山、东域山以及卢龙县武山剖面又逐层采集了化石。对牙形刺、笔石、头足类烫三叶虫等门类化石的综合研究,对这一地区奥陶纪地层的生物序列以及寒武系与奥陶系的分界问题,有了新的认识。河北二区测队李勤、郑国庆提供剖面资料,笔者谨致谢忱。
The Ordovician strata in Tangshan, Hebei Province developed well with rich fossils, which are the standard profiles of the Ordovician in the North China. 1975-1976 Geological Survey of Geological Survey of the Second District of Hebei Geological Survey Brigade in this area have done a lot of work, the fossils collected by the author identification and preliminary study. On the basis of the work of the survey team comrades in the Second District of Hebei, in October 1979, the author collected fossils layer by level from the sections of Changge Mountain, Dongdushan Mountain and Wulong County of Lulong County in Tangshan City. A comprehensive study on the types of fossils such as conodonts, penoliths and Cephalotaxus has given new insights into the biological sequence of the Ordovician stratigraphy and the boundary between the Cambrian and Ordovician in this area . Hebei District team Li Qin, Zheng Guoqing profile information, I would like to thank you.