A detailed Lower Triassic conodont biostratigraphy and its implications for the GSSP candidate of the Induan–Olenekian boundary in Chaohu,Anhui Province

作     者：Michael J.Orchard 

作者机构：Canada V6B5J3 Geological Survey of Canada 101-605 Robson Street Vancouver 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2008年第18卷第1期

页      面：79-90页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：National Natural Science Foundation of China, NSFC, (40325004, 40574028, 40621002) British Geological Survey, BGS, (GK4700, GPMR2007, IGCP 467) 

主　　题：Conodont biostratigraphy Conodont zonation Lower Triassic Induan–Olenekian Chaohu in Anhui Province 

摘      要：Chaohu is located in a deep part of carbonate ramp on the Lower Yangtze Block,which belonged to the low-latitude eastern Tethyan archipelago during the Early *** were very rich in the Lower Triassic of ***,ammonoids,conodonts were very common throughout the Lower Triassic,while fish fossils were generally rich in some beds of the upper *** is one of the most typical sections for the Early Triassic chronostratigraphy in the *** various fossils had been studied in the 1980s and 1990s,recent studies based upon new and more detailed collections from the Lower Triassic of Chaohu showed that the conodont zonation needs *** collected Lower Triassic conodont fossils from continuous sections of the West Pingdingshan,North Pingdingshan and South Majiashan,Chaohu,Anhui Province,and updated zonations were made for each *** conodont zones have been dis- *** are,in ascending order,Hindeodus typicalis zone,Neogondolella krystyni zone,Neospathodus kummeli zone,Neospath- odus dieneri zone,Neospathodus waageni zone,Neospathodus pingdingshanensis zone,Neospathodus homeri zone,and Neospathodus anhuinensis *** first occurrence of Neospathodus waageni eowaageni of the *** subzone(*** base of the *** zone)is suggested as the marker to define the Induan–Olenekian boundary.