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根据三叶虫Acanthometopus obesus、Trianguraspis nodus、Petalocephalus laevis、Taishaniasp.等的发现,将淮北地区捻山剖面原属凤山阶的地层划归长山阶,以Acanthometopus带作为该区长山阶最顶部的三叶虫带,淮北地区凤山阶与长山阶的界线应在Ptychaspis-Tsinania带与Acanthometopus带之间;通过与标准剖面及邻近地区的对比,淮北地区的崮山组应予解体,原崮山组上部与炒米店组岩性一致,应划入炒米店组,其下部岩性与张夏组一致,应划入张夏组,淮北地区无崮山组。淮北地区的炒米店组跨越了整个长山阶和凤山阶中下部,据岩性差异可分为上、下两段;炒米店组在华北地区具有明显的穿时性,其底界从长山阶底界跨至凤山阶顶界。
Based on the findings of the trilobites Acanthometopus obesus, Trianguraspis nodus, Petalocephalus laevis and Taishaniasp. Et al., The strata of the Fushan step in the Xianshan section of Huaibei area are assigned to the Changshan order. The Acanthometopus belt is used as the top of the Changshan step Trilobite zone, the boundary between Fengshan and Changshan in Huaibei area should be between Ptychaspis-Tsinania and Acanthometopus belts. By comparison with the standard profiles and adjacent areas, the Jushan Formation in Huaibei area should be disintegrated. The upper part of Shanyam Group is consistent with the lithologic character of Fried Rice Group, and should be included in the Fried Rice Shop Group. The lithology of the lower part of Shanyi Mountain Group is consistent with that of Zhangxia Group and should be assigned to Zhangxia Group and Wuwei Mountain Group in Huaibei District. Huaibei fried rice shop across the entire mountain range and the lower part of Fengshan order, according to differences in lithology can be divided into the upper and lower sections; fried rice shop group in North China has obvious wear time, the bottom from the long Mountain bottom boundary crosses to Fengshan order top boundary.