| A statistical test on diversity changes of Early and Middle Permian fusulinacean fauna in South China |
| |
| 作者姓名： | SHI Yukun & YANG Xiangning |
| |
| 作者单位： | SHI Yukun & YANG Xiangning Department of Earth Sciences，Nanjing University，Nanjing 210093，China |
| |
| 基金项目： | 国家自然科学基金，the Major Basic Research Project of China |
| |
| 摘 要： | Regional stratigraphic data of major fossil groups in the critical geologic periods could provide reliable materials not only for the studies of diversity changes in different biogeographic provinces,but also for the comparison of regional patterns in the major biotic events accumulated in a long history of investigation,the paleontologic and stratigraphic data of South China have made indispensable contributions to re-vealing the pattern of end-Permian extinction1―3],analyzing the differenc…
|
A statistical test on diversity changes of Early and Middle Permian fusulinacean fauna in South China |
| |
| SHI Yukun & YANG Xiangning.A statistical test on diversity changes of Early and Middle Permian fusulinacean fauna in South China[J].Science in China(Earth Sciences),2005,48(7). |
| |
| Authors: | SHI Yukun YANG Xiangning |
| |
| Institution: | Department of Earth Sciences, Nanjing University, Nanjing 210093, China |
| |
| Abstract: | The rarefaction analysis has been conducted to test the species diversity changes of the Early and Middle Permian fusulinacean fauna in South China. The results reveal that the number of species dramatically increased since the earliest Permian and quickly reached the maximum value in the early Zisongian representing the highest species diversity for the whole Early and Middle Permian. The species diversity stabilized in the plateau through the Zisongian; however, it started to decline in the following Longlinian and sustained a longstanding low level during the mid-Early Permian. With the appearance of new fusulinacean taxa with septulum structures, the number of species raised again in the late-Early Permian, followed by a decline in the Middle Permian Neoschwagerina simplex zone. Although the species diversity increased apparently in the Kuhfengian, it never rebounded back to the same level as in the Early Permian. In the mid-Middle Permian, species diversity began to decrease continuously and led to the disappearance of most fusulinacean species by the end of the Middle Permian. |
| |
| Keywords: | South China Permian fusulinacean fauna diversity statistical test |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
