石炭、二叠系的界线,一直是个争议很大的问题。现在按照世界上多数国家地层古生物工作者的意见,二者应划在Pseudoschwagerina带之底部。我国华南的船山组或马平组,目前则把Pseudoscfiwagerina带之上的Robustoschwagerina或Staffella带归入早二叠世。上述两种划分意见,界线的上、下差着一个生物化石带。若按国际划分方案,我省的太原组势必一分为二,在北部划在一套细碎屑岩和含筵石灰岩之间,南部则在含(竹蜓)石灰岩地层内部,分属晚石炭世和早二叠世;若按我国华南的划法,太原组也有一部分 Carboniferous, Permian boundaries, has been a controversial issue. Now according to the palaeontologists in most of the countries in the world, both should be planted at the bottom of the Pseudoschwagerina zone. The Chuanshan Formation or Maping Formation in South China nowadays includes the Robustoschwagerina or Staffella belt on the Pseudoscfiwagerina belt into the Early Permian. Above two kinds of divided views, the boundaries of the upper and lower a biological fossil zone. According to the plan of international division, the Taiyuan Formation in our province will inevitably be divided into two parts. In the northern part, there is a set of fine clastic rocks and banded limestone. In the south, World and Early Permian; according to China’s South China’s zoning law, Taiyuan group also has a part