Based on the new material collected from the medium bedded to thin-bedded glauconitic limestone in the lowermost part of the Chaumitien Formation, the diagnosis and occurrences of the genus Shanchengziella Lu and Qian, 1983 have been revised. Metapianaspis Qian, 1994 and Zhalangtania Zhou in Zhou et al., 1996 are considered as synonymous with Shanchengziella, which is grouped within the family Cheilocephalidae Shaw, 1956. The trilobite Liostracina simesi-Placosema convexa Zone has been established for the last occurrence of Miaolingian Series in North China Platform. It is very useful and significant for the stratigraphical correlation between North China Platform and South China Slope.
