• 责任者：Guo Junfeng (Key Laboratory of Geological Resources and Geological Engineering of Western China ; Ministry of Education ; College of Earth Science and Resources ; Chang’an University ; Xi’an 710054 ; China) ; Li Yong
• 刊名：Journal of Northwest University
• 出版年：2010
• 卷期：40(4)
• 关键词：晚石炭世 ; Upper Carboniferous ; 牙形石 ; conodonts ; 秦岭 ; Qinling Mountains
• 页码：p.679-684
• 图表：1 illus., 32 refs.
• 分类号：1100
• issnNo：ISSN1000-274X
• isbnNo：CN61-1072/N

This paper discussed the conodont distribution law of the Upper Carboniferous from Xiajialing Formation, Lixian, Gansu, West Qinling, and established the conodont sequences for Carboniferous strata classification and correlation. Based on observation of conodont distribution character of Xiajialing Formation, the conodont sequences are established.  The conodont sequences of Xiajialing Formation can be subdivided, in the ascending order, into: Declinognathodus noduliferus noduliferus-Idiognathoides sinuatus assemblage zone, Idiognathodus delicates-Neognathodus bassleri-Neogondolella clarki assemblage zone and Streptognathodus suberectus-S. parvus-S.  gracilis assemblage zone.