滑石板阶标准剖面的牙形刺主要有Neognathodus symmetricus, Declinognathodus noduliferus noduliferus, D.noduliferus inaequal......

本文详细描述了贵州罗甸纳水上石炭统罗苏阶(Luosuan)和滑石板阶(Huashibanian)的牙形刺序列,自上而下可详细划分为: Diplognathod......