滑石板阶标准剖面的牙形刺主要有Neognathodus symmetricus,Declinognathodus noduliferus noduliferus,D.noduliferus inaequalis,D.lateralis,Idiognathoides corrugatus,I.sinuatus和I.sulcatus等，应属Neognathodus symmetricus带；滑石板阶之底界则在Neognathodus symmetricus带中通过。由此可知，在标准剖面上．滑石板阶的大部应与国际地层表中的巴什基尔阶或北美莫罗阶中部相当。

The present paper studies in detail the conodonts from the type section of the Huashibanian. They are Neognathodus symmetricus, Declinognathodus noduliferus noduliferus, D. noduliferus inaequalis, D.lateralis, Idiognathoides corrugatus, I.sinuatus and I.sulcatus , referred to the Neognathodus symmetricus Zone. The base of Huashibanian is within the Neognathodus symmetricus Zone. At the type section, the most part of Huashibanian is corresponding to the middle part of Bashkirian of the international stratigraphic chart or Morrowan of North America.

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中国科学院重要方向性项目 (KZCXZ SW 12 9)，全国地层委员会中国主要断代地层建阶研究项目资助