晚石炭世-早二叠世是地质历史的关键时期，记录了显生宙最大规模的冰室效应向温室效应转变的过程。不同环境背景下生物多样性的变化对于揭示生物与环境的互动关系具有重要意义，是目前国际古生物学研究的热点之一。高精度生物地层格架是多样性研究的首要条件。牙形化石作为全球地层划分和对比的主要依据，其演化序列及高精度的生物地层划分得到高度关注并获得系统研究。蜓类是浅海相地层划分的标准化石，与牙形化石带的对比是解决不同相区地层对比的关键，也是现阶段生物地层研究亟待解决的难点。项目以蜓类和牙形化石共同发育的贵州那饶和水井寨剖面为基干剖面，采用居群的概念对蜓类重要化石属种的分类学进行深入探讨，从演化的角度展开蜓类高精度生物地层划分、以及蜓类化石与牙形化石的地层对比关系。以化石带为时间标尺，采用限制最大化(CONOP)分析方法，展开多剖面间的定量地层对比和多样性统计，精准地反映华南晚石炭世-早二叠世生物演化的特征。

The Late Carboniferous to Early Permian is the critical time interval that recorded the transition from the Ice House to Green House. The pattern of the biodiversity under different environmental background is the window to understand the interactions between the faunas and the environments, and has become one of the hot topics in the palaeontological realm. The high-precision biostratigraphic framework is the basis for the study on biodiversity. The conodonts are regarded as the index fossils for global biostratigraphic correlations, and have received detailed studies on both the taxonomy and high-resolution biostratigraphy during the last few years. The fusulnes are the regional index fossils for the shallow marine sediments. The correlations between the conodont and fusuline zones are the keys in connecting sections of different facies, and have been the major target for the Carboniferous and Permian subcommissions. Recent studies have found abundant fusulines in association with abundant conodonts at the Narao, Fengting and Luokun sections in southern Guizhou.This project will study the shallow marine section, the Shuijingzhai section and the Narao section of slope facies in detail in order to obtain the fusuline successions and find out the stratigraphic relationships between these two fossil groups.The other sections will be studied as the auxiliary sections to provide additional informations. More emphasis will be placed on the fusuline taxonomy from the viewpoint of population as well as their evolutionary trends. All of these formed the basics of the time scale for calibrating the pattern of the biodiversity from Late Carboniderous to Early Permian in South China.The method of constrained optimization (CONOP) will be applied for multi-section correlations.