摘要
综述了二叠 -三叠纪转折期放射虫动物群的研究进展 ,长兴阶晚期放射虫动物群 90 %以上的种在二叠纪末期灭绝 ,只有少数在浅海灰岩和远洋硅质岩中均能够发现的属种才成功残存到三叠纪 ;三叠纪放射虫的复苏和辐射经历了较长的过程 ,Griesbachian至 Smithian为放射虫残存期 ,Spathian 为放射虫的复苏期 ,Anisian是放射虫的辐射期。Anisian放射虫的辐射受到强缺氧事件的影响。
The aim of this article is to present the recent research development about the radiolarian faunas during the Permian Triassic transition Over 90% of the late Changxingian radiolarian species disappeared at the end Permian and only a few species that could be found in both shallow limestones and pelagic cherts survived successfully into the Triassic The survival period spans Griesbachian to Smithian and the recovery period, Spathian, and Radiolaria began to radiate from Anisian stage The radiation of ...
出处
《地质科技情报》
EI
CAS
CSCD
北大核心
2001年第3期31-34,共4页
Geological Science and Technology Information
基金
国家自然科学基金资助项目 ( 49632 0 70
49972 0 0 2 )
关键词
放射虫
长兴阶至安尼阶
演化
灭绝和复苏
缺氧事件
radiolaria
Changxingian to Anisian
faunal change
extinction and recovery
anoxia event
