Ophiceras(蛇菊石)在滇东卡以头组的发现及其意义THE DISCOVERY OF Ophiceras IN THE KAYITOU FORMATION IN EASTERN YUNNAN PROVINCE AND ITS SIGNIFICANCE
田云涛,喻建新,冯庆来
摘要(Abstract)：
Ophiceras(蛇菊石)在滇东海陆交互相卡以头组下部(25层下部)的首次发现,是近期海陆交互相和陆相二叠系-三叠系界线(PTB)研究的重要进展之一。该化石的发现为滇东卡以头组地层时代的确定提供了更加确凿的依据。在煤山D剖面,29-37层为Ophiceras(蛇菊石)的顶峰带,因此,可将滇东密德B剖面的25层与煤山D剖面29层对比,那么滇东地区卡以头组主体(甚至全部)的时代可划归早三叠世。
关键词(KeyWords)： Ophiceras(蛇菊石);海陆交互相;卡以头组;二叠系-三叠系界线;早三叠世;密德B剖面;宣威;滇东
基金项目(Foundation): 国家自然科学基金创新团队项目(No40621002);; 国家自然科学基金(No40232025、40325004);; 国家地质学理科基地专项基金(J0630538)共同资助
作者(Author): 田云涛,喻建新,冯庆来
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