浙江长兴煤山二叠-三叠系界线层牙形石序列及其全球对比

在详细研究全球二叠－三叠系界线层候选剖面───中国浙江长兴煤山剖面Ｐ／Ｔ界线层牙形石动物群序列基础上，自下而上识别出４个牙形石带：（１）ＣｌａｒｋｉｎａｃｈａｎｇｘｉｎｇｅｎｓｉｓＣｌａｒｋｉｎａｄｅｆｌｅｃｔａ带；（２）Ｉｓａｒｃｉｃｅｌｌａｐａｒｖａ带；（３）Ｉｓａｒｃｉｃｅｌｌａｉｓａｒｃｉｃａ带；（４）ＣｌａｒｋｉｎａｃａｒｉｎａｔａＣｌａｒｋｉｎａｐｌａｎａｔａ带，并在第一带中划分出３个动物群，从下向上是：ＣｌａｒｋｉｎａｃｈａｎｇｚｉｎｇｅｎｓｉｓＣｌａｒｋｉｎａｄｅｆｌｅｃｔａ－Ｃｌａｒｋｉｎａｓｕｂｃａｒｉｎａｔａ动物群，Ｈｉｎｄｅｏｄｕｓｌａｔｉｄｅｎｔａｔｕｓ－Ｃｌａｒｋｉｎａｍｅｉｓｈａｎｅｎｓｉｓｓｐ．ｎｏｖ．动物群和Ｈｉｎｄｅｏｄｕｓｔｙｐｉｃａｌｉｓ动物群，煤山剖面二叠、三叠系界线层牙形石序列的建立、完善，对确立该剖面在全球二叠、三在系界线高精度对比中的标准地位具重要意义。

CONODONT SEQUENCE AND ITS GLOBAL CORRELATION OF PREMIAN-TRIASSIC BOUNDARY IN MEISHAN SECTION,CHANGXNG,ZHEJING PROVINCE

Based on detailed study of the conodont fauna sequence at boundary strata of the Meishan section, the candidate of the global stratotype section,four conodont Zones are established.In ascending order they are as follows:(1) Clarkina carinata-clarkina planata zone;(2) Isarcicella isarcica zone;(3)Isarcicella parva zone;(4) Clarkina changzingensis-clarkina deflecta zone.Furthermore,three condonot faunas have been recognized from the Clarkina changxing-Clarkina deflecta zone ,ine ascending order they are:(1) Clarkina changxingsis-clarkina defecta-Clarkina subcarinata fauna;(2) Hindeodus latidentatus-Clarkina meishanensis fauna;(3) Hindeodus typicalis fauna. The establishment of the conodont sequence at the Permian-Triassic strata in Meishan section,it is very important to determine the standard position of the Meishan section on the high-resolution divesion of the global Permian-Triassic boundary.