华南长兴阶至拉丁阶放射虫绝灭、复苏及生物地层对比

The Upper Permian, Lower and Middle Triassic radiolarians and its co-occuring fossils, including foraminifera, ammonites, brachiopods et al., were researched in the nine stratigraphic sections composed of deep-water deposits in South China and southwestern Yunnan for paleontology, biostratigraphy, paleoecology, and geologic events. New radiolarian assemblage, namely Klaengspongus spinosus Assemblage, was found in the strata between the Permian-Triassic Boundary and the top of Neoalbaillella optima Zone which had been considered as the uppermost biozone of the Permian radiolarian. Four Middle Triassic radiolarian zones were set up in southwestern Yunnan. The deep-water paleoecological assemblages of the Changxingian radiolarian earlier disappeared than the shallow-water paleoecological assemblages. All middle Early Triassic radiolarian faunas were collected from the shelf-limestones, and they were with an extremely low diversity and composed of "Paleozoic-typical" species. These results are with important significance for researching the paleooceanography and geological events during the Permian-Triassic Transition.

对华南深水相长兴阶至拉丁阶放射虫动物群进行系统的分类学、生物地层学和古生态学研究，划分放射虫化石带，并查明与其它门类化石带的对比关系；区分放射虫分类单元类型，从生态系角度研究古、中生代转折期放射虫的绝灭、复苏、辐射规律；对精确厘定长兴阶至拉丁阶放射虫化石带的地质时代、深入认识古、中生代之放射虫演化事件具有重要意义。.