以化石带为基础的华南■类属种数据库  

A COMPUTERIZED DATABASE OF STRATIGRAPHICAL DISTRIBUTION OF FUSULINACEANS IN SOUTH CHINA

作　　者：朱李鸣[1] 杨湘宁[1] 殷小龙[1] 

机构地区：[1]南京大学地球科学系,南京210093

出　　处：《微体古生物学报》2002年第4期397-406,共10页Acta Micropalaeontologica Sinica

基　　金：国家重点基础研究发展规划 ( G2 0 0 0 0 7770 4 );国家自然科学基金项目 ( 40 0 72 0 0 8)部分研究成果

摘　　要：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。A computerized database of stratigraphical distribution of fusulinaceans in South China has been compiled based on a systematic study of published materials about the biostratigraphy of fusulinid fossils. The fusulinid zones were used as the biostratigraphic framework for the database. For each fusulinid zone, numbers of first appearance (FA) and last appearance (LA), as well as the total number (Diversity) of fusulinacean species were recorded. The database, which now includes 1 447 fusulinacean species belonging to 90 genera, provides a useful tool to study the process of diversity changes and pattern of diversification of fusulinacean fauna from the Carboniferous to the Permian in South China. A preliminary analysis of the database has indicated a significant decrease of species diversity in the Early Permian fusulinacean fauna of South China, which probably represents the largest bio event in the fusulinacean fauna of South China.

关 键 词：化石带 华南 Ting类属种数据库 早二叠世 

分 类 号：Q915[天文地球—古生物学与地层学]