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本文详细描述了贵州罗甸纳水上石炭统 (宾夕法尼亚亚系 )剖面的生物地层和年代地层 ,其牙形刺序列自上而下可详细划分为 :Streptognathodus isolatus,S. wabaunsensis,S. tenuialveus,S. firmus,Idiognathodusnashuiensis,Streptognathodus simulator,S.guizhouensis,S.gracilis- S.excelsus,S.cancellosus,S.clavatulus,S. nodocarinatus,Idiognathodus podolskensis,Mesogondolella clarki - Idiognathodus robustus,Diplognathodusophanus- D.ellesmerensis,Idiognathoides ouachitensis,Streptognathodus expansus,Idiognathoides sulcatus parva,Idiognathodus primulus- N eognathodus bassleri,Idiognathodus primulus- N eognathodus symmetricus,N eognatho-dus symmetricus,Idiognathoides corrugatus- I. pacificus,I. sinuatus,I. sulcatus sulcatus,Declinognathodusnoduliferus和 Gnathodus bilineatus bollandensis等带。Declinognathodus noduliferus和 Streptognathodus isolatus的首次出现分别代表上石炭统 (宾夕法尼亚亚系 )和二叠系的开始。根据牙形刺和有孔虫的序列 ,罗甸纳水剖面的上石炭统 (宾夕法尼亚亚系 )地层自下而上可划分为罗苏阶 (L uosuan)、滑石板阶 (Huashibanian)、?