[关键词]
[摘要]
中国南方扬子地台震旦系陡山沱组产出丰富的微体化石，它们主要保存在磷块岩以及燧石结核和条带中。文章详细报道湖北峡东地区九龙湾剖面震旦系陡山沱组微体化石，描述以前未曾在峡东地区碳酸盐相燧石中发现的8属8种微体化石。研究九龙湾剖面陡山沱组大型带刺疑源类、微体多细胞藻类和动物胚胎化石的分布特征，发现Tianzhushania spinosa是最早出现的大型带刺疑源类分子，大冰期后微体生物的辐射是一个阶段性渐进的过程。同时．本项研究进一步证实华南扬子区陡山沱组碳酸盐相燧石和磷块岩地层中保存的微体化石面貌基本一致。
[Key word]
[Abstract]
Abundant microfossils have been discovered from the Sinian Doushantuo phosphorites and chert nodules in South China.Here we report large acanthomorphic acritarchs,micro-algae and animal embryos from Doushantuo cherts at the Jiulongwan section in the eastern Yangtze Gorges area.Eight genera and 8 species are described for the first time in the eastern Yangtze Gorges area,including the micro-alga Sarcinophycus radiatus,acritarchs Cymatiosphaeroides kullingii,Ericiasphaera spjeldnaesii,Meghystrichosphaeridium ...
[中图分类号]
Q913
[基金项目]
国家自然科学基金(Nos.40772021,40628002,40625006);;科技部国家重点基础研究发展规划973项目(2006CB806401)联合资助
