龚方怡,吴荣昌,闫冠州,栾晓聪,李丽霞

• 1:中国科学院南京地质古生物研究所
• 2:中国科学院大学

摘要(Abstract)：

安徽石台地区柳树亭剖面是下扬子区中—晚奥陶世地层代表性剖面,本文对该剖面开展了详细的牙形类生物地层学研究。通过系统的样品采集分析,在柳树亭剖面的牯牛潭组和大田坝组自下而上识别出牙形类Lenodus antivariabilis带、Lenodus variabilis带、Yangtzeplacognathus crassus带、Dzikodus tablepointensis带、Yangtzeplacognathus jianyeensis带;宝塔组自下而上可识别出Baltoniodus alobatus带和Hamarodus brevirameus带。柳树亭剖面中—晚奥陶世牙形类生物地层序列可以在区域内乃至全球范围内进行较好的对比,但中—晚奥陶世之交缺失Eoplacognathus suecicus带、Yangtzeplacognathus foliaceus带和Yangtzeplacognathus protoramosus带。

关键词(KeyWords)： 中—晚奥陶世;下扬子区;牙形类;生物地层;地层缺失;安徽

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41672008、42072005);; 中国科学院青年创新促进会(2019308)和中国科学院战略性先导科技专项(B类)(XDB26000000)共同资助

作者(Author): 龚方怡,吴荣昌,闫冠州,栾晓聪,李丽霞

DOI: 10.19839/j.cnki.dcxzz.2022.0029

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