Late Changhsingian (Latest Permian) Radiolarians from Chaohu,Anhui  

作　　者：桂碧雯 冯庆来 袁爱华 

机构地区：[1]Key Laboratory of Geobiology and Environmental Geology of the Ministry of Education, China University of Geosciences

出　　处：《Journal of Earth Science》2009年第5期797-810,共14页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 40839903 and 40621002);the 111 Project (No. B08030)

摘　　要：This article reports a radiolarian fauna from the upper Dalong（大隆） Formation,Ping-dingshan（平顶山）,Chaohu（巢湖）,Anhui（安徽） Province,which includes 15 genera and 23 species.One new species,Copicyntra tongi Gui and Feng n.sp.,is described.Comparison of the fauna,lithology and biotic associations with those from Meishan（煤山） D and Dongpan（东攀） sections shows that the Dalong Formation in the Pingdingshan Section is deposited in a deep-water shelf basin,about 60-200 m in depth.On the basis of the biotic composition,diversity and morphology,the microfossil fauna from the Pingdingshan Section can be divided into three sedimentary assemblages and the extinction proc-esses of the assemblages are discussed.This article reports a radiolarian fauna from the upper Dalong（大隆） Formation,Ping-dingshan（平顶山）,Chaohu（巢湖）,Anhui（安徽） Province,which includes 15 genera and 23 species.One new species,Copicyntra tongi Gui and Feng n.sp.,is described.Comparison of the fauna,lithology and biotic associations with those from Meishan（煤山） D and Dongpan（东攀） sections shows that the Dalong Formation in the Pingdingshan Section is deposited in a deep-water shelf basin,about 60-200 m in depth.On the basis of the biotic composition,diversity and morphology,the microfossil fauna from the Pingdingshan Section can be divided into three sedimentary assemblages and the extinction proc-esses of the assemblages are discussed.

关 键 词：RADIOLARIAN sedimentary environment extinction upper Dalong Formation Chaohu. 

分 类 号：Q915[天文地球—古生物学与地层学]