摘要
鄂西沿渡河剖面发育连续的乌拉尔统空谷阶至乐平统长兴阶海相碳酸盐岩沉积,是探讨该时期有孔虫动物群演化的良好区域。通过对该剖面梁山组至吴家坪组进行系统采样和切片观察研究,共获得2271枚有孔虫化石,鉴定得到37属76种,包含非䗴有孔虫30属64种、䗴类有孔虫7属12种。鄂西沿渡河剖面的䗴类有孔虫在中-晚二叠世之交表现出了一次显著的生物灭绝,对应牙形石Clarkina postbitteri hongshuiensis带和Clarkina postbitteri postbitteri带的界线,而非䗴有孔虫则受影响较小。
Continuous marine carbonate deposits from Kungurian (Cisuralian) to Changhsingian(Lopingian) age were well developed at the Yanduhe section, Hubei Province, which is a goodarea to explore the evolution of foraminifer fauna during this period. In this study, the strata fromLiangshan Formation to Wujiaping Formation were systematically sampled. About 2, 271foraminifer fossil individuals were collected and could be assigned to 76 species in 37 genera. Thefusulinid fossils were indentified into 12 species in 7 genera, and the non-fusulinids foraminiferswere assigned to 64 species in 30 genera. There was a remarkable mass extinction at the Middle-Late Permian boundary among the fusulinids foraminifers from the Yanduhe section, whichcorresponds to the boundary between the Conodont Clarkina postbitteri hongshuiensis Zone andClarkina postbitteri postbitteri zone. However, the non-fusulinids foraminifers were less affected.
作者
李梦凡
黄云飞
田力
吴奎
黄子航
杜漫越
王延达
LI Mengfan;HUANG Yunfei;TIAN Li;WU Kui;HUANG Zihang;DU Manyue;WANG Yanda(School of Geosciences,Yangtze University,Wuhan 430100,China;State Key Laboratory of Biogeology and Environmental Geology,School of Earth Sciences,China University of Geosciences,Wuhan 430074,China;Hubei Key Laboratory of Resources and Eco-Environment Geology,Hubei Geological Bureau,Hubei Institute of Geosciences,Wuhan 430034,China)
出处
《微体古生物学报(中英文)》
CSCD
北大核心
2024年第4期332-356,共25页
Acta Micropalaeontologica Sinica
基金
国家重点研发计划(编号:2023YFF08040001)
国家自然科学基金项目(92155201、42202341)
生物地质与环境地质国家重点实验室开放课题(GBL22103)共同资助。
