我国北方石炭—二叠系牙形刺序列再认识

REVIEW OF CARBONIFEROUS—PERMIAN CONODONT BIOSTRATIGRAPHY IN NORTH CHINA

文中根据当前比较统一的牙形刺分带原则 ,对我国北方石炭—二叠系的牙形刺序列进行了研究和重新定义。我国北方地区石炭—二叠系的牙形刺带或组合带由上而下可综合如下 :Sweetognathus whitei,S.inornatus,Streptognathodus barskovi,S.isolatus,S.elegantulus- S.oppletus,Idiognathodus magnificus- N eognathodusroundyi,Idiognathodusdelicatus- N eognathodusbothrops,Idiognathoides corrugatus- I.sinuatus,Declinognathodusnoduliferus,Gnathodus bilineatus bollandensis和 Gnathodus bilineatus bilineatus带或组合带。本文同时介绍了牙形刺带和组合带在我国北方的分布、时代及其对比。

r After the restudy of the Carboniferous—Permian conodonts in North China, the Carboniferous—Permian conodont sequence of North China can be summarized in the descending order: the Sweetognathus whitei, S. inornatus, Streptognathodus barskovi, S. isolatus, S. elegantulus S.oppletus, Idiognathodus magnificus Neognathodus roundyi, Idiognathodus delicatus Neognathodus bothrops, Idiognathoidesi corrugatus I. sinuatus, Declinognathodus noduliferus, Gnathodus bilineatus bollandensis and G. bilineatus bilineatus zones or assemblage zones. The distribution in North China of these conodonts and their correlation with other areas are discussed also in this paper.