内蒙古大青山地区早古生代生物化石的发现及意义

大青山地区发育一套以白云岩、灰质白云岩和少量石英砂岩为主的地层。以往由于缺少生物化石依据，对其划分对比及时代归属一直存在不同意见。通过工作，在该套地层中采到了三叶虫、笔石、头足、腹足和腕足类等多门类生物化石，经鉴定有相当部门属种是华北地区寒武－奥陶系常见的标准化石主要组成分子，为解决磁地层的划分对比及时代归属提供了可靠依据。

The Discovery of the Early Palaeozoic Fossils and It's Significance in Daqingshan Region, Inner Mongolia

There is a series of strata composed of dolomitite, calcareous dolostone and quartzose sandstone. As to having a few fossils found before, so the age, classification and cor-relation of the strata have different opinion for a long time. After careful field work, we have collected a number of Trilobita, Graptolithina, Cepholopoda, Gastropoda and Branchiopda in the strata, such as: Luaspides, Manchuriella , Dictyonema, Armenoceras, Ormoceras and MaLurites, which provide scientific basis for the age, classification and correlation of the strata.