华北地台石炭纪至早二叠世腕足动物古生态研究

根据华北地台石炭纪至早二叠世腕足动物研究材料，结合共生生物、围岩特征等，分析并建立了研究区５个以腕足动物占优势的典型底栖生态群落，它们是：Ｌｉｎｏｐｒｏｄｕｃｔｕｓ－ｏｖａｔｉａ群落，Ｄｅｒｂｙｉａ群落，Ｂｅｃｈｅｒｉａ－Ｓｔｅｎｏｓｃｉｓｍａ群落，Ｌｉｎｇｕｌａｉ－Ｃｈｏｎｅｔｅｓ群落和潮下波浪带腕足动物群落。讨论了特定地质背景下群落的时空分布特征和各群落的生活环境。腕足动物群落分布的控制因素是多方面的，其中海底地形、海侵规模及持续时间长短是主导因素。

RESEARCH ON THE PALEOECOLOGY OF THE BRACHIOPODAS FROM THE CARBONIFEROUS TO EARLY PERMIAN IN NORTH CHINA PLATFORM

Based on the detailed data of the brachiopodas and sedimentary rocks from the Carboniferous to Early Permian, the authors established five communities dominated by brachiopods on North China Platform. They are respectively Linoproductus Ovatia community near the low tidal line of gulf connecting with normal marine, Derbyia community in open basin connecting with nomal sea, Beecheria Stenoscisma community near the wave plane or on the restrained carbonate rock terrace, Lingula Chonetes community inhabiting lagoonal environments, and a brachiopod community living in wave zone below low tidal line. The study of their time and space distribution and living environments under the specific geological background suggested, that the key factors controlling the distribution of brachiopod communities in the studied area be topography of sea bottom, transgression scale and the duration of sea water flooding.