Abstract: The conchostracan fossils, such as Chuanjieestheria Niu, Eosestheriopsis Shen et Chen, and Yunnanograpta Niu were oring-inally collected from Upper Jurassic Madishan Formation, Anning Formation and Tuodian Formation in central Yunnan Province.Af-ter that, these fossils were found from Upper Jurassic Shuining Formation and Penglaizhen Formation in Sichuan Basin.In 1980, ge-nus Chuanjieestheria Niu was found in Yanjiagou Village, Xuanhua City, Hebei Province by the authors.The discovery of this genus is of important significance in the stratigraphic division and correlation.