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《JOURNAL OF CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY》 2000-04
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NEW LOWER ORDOVICIAN NAUTILOIDER FOSSILS IN DAQINGSHAN MOUNTAIN REGION,INNER MONGOLIA

CHENG Li_ren,PENG Xiang_dong,LIU Zheng_hong,XU Zhong_yuan (Changchun University of Science and Technolegy,Changchun 130026, China)  
The paper has discribed 3 species and 5 species indeterminata,including 1 new species The fossils are found in a series strata of carbonate which had been classified into Shinagan group of upper Protozoic by former geologist The research of the strata in the region have long history,but have not gotten prominent progress in biofossils researching,so the age of the strata have uncertain for a long time,the discovery of fossils,Nautiloidea,Graptolithina,Gastropoala and Brachiopoda can provide a certain evidence,it can be concluded that the strata must be lower Ordovician
【Fund】: 原地质矿产部内蒙古大青山地区6幅1∶5万区调项目!(0199209031)
【CateGory Index】: Q915
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