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以华南类化石带序列为基础 ,对华南地区类属种的地层分布资料进行了整理 ,建立了华南类 90属14 47种的地层、地理分布数据库。在数据库中 ,可以类化石带为时间尺度 ,查询华南地区不同时期类属种的首现及末现数 ,统计类属种数及属种名单。通过对查询、统计结果的分析 ,可以研究华南地区石炭—二叠纪类分异度的变化过程 ,为研究类动物群的辐射演化、灭绝型式提供定量数据。初步分析结果揭示 :华南地区类动物群物种分异度在早二叠世时曾大幅度下降。就物种消失的数量而言 ,早二叠世类动物群物种分异度的下降构成了本区石炭—二叠纪规模最大的类动物群事件。
Based on the southern China fossil belt sequence, the stratigraphic distribution data of the sibirica species in southern China were sorted out. Stratum and geographical distribution databases of 14 47 species of 90 genera in South China were established. In the database, the fossil zone can be used as a time scale to query the first occurrences and the last occurrences of the sibiric genus in different periods in South China, and statistics on the species and genera of sibiric species. Through the analysis of the query and statistical results, we can study the variation process of Carboniferous-Permian 分 taxonomy in southern China and provide quantitative data for studying the evolution and extinction patterns of fauna. The preliminary analysis revealed that the species diversity of the fauna in southern China decreased significantly during the Early Permian. In terms of the number of species disappeared, the decline of the species diversity of the Early Permian fauna has constituted the largest fauna event of the Carboniferous-Permian in this area.