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Euestheria jingyuanensis(靖远真叶肢介)命名于甘肃靖远中侏罗统王家山组油页岩段,是广泛分布于我国中侏罗世E.ziliujingensis(自流井真叶肢介)群的重要分子之一,其壳瓣具有典型的小网状装饰。通过对E.jingyuanensis模式标本进行扫描电镜观察发现:其生长带上具有不规则的网状和线状装饰,与同属E.luanpingensis(滦平真叶肢介),E.ziliujingensis等具有细小网状壳饰的种易于区分。E.jingyuanensis常与E.ziliujingensis等种共生,以前认为内蒙古宁城道虎沟层含有E.jingyuanensis,但目前看道虎沟层可能只含有E.luanpingensis。E.jingyuanensis壳瓣装饰超微结构的确定对Euestheria属的分类以及中侏罗统地层对比研究工作具有一定意义。
Euestheria jingyuanensis, named after the middle Jurassic Wangjiashan Formation oil shale in Jingyuan, Gansu Province, is an important molecule widely distributed in the Middle Jurassic E.ziliujingensis (Artemia) One of its shell valve with a typical small mesh decoration. Through scanning electron microscopy observation of E.jingyuanensis model specimens, there were irregular network and linear decoration on the growth zone, which were similar to those of E.luanpingensis (Luanping true leaf extremity), E.ziliujingensis Shell species easy to distinguish. E.jingyuanensis often coexists with E. ziliujingensis and other species. It was previously thought that the E. jingyuanensis is contained in the Daohuogou layer of Ningcheng, Inner Mongolia, but at present the Daoogou layer may only contain E.luanpingensis. The identification of the ultrastructure of the ornamental shell of E.jingyuanensis is of great significance to the classification of Euestheria and the comparative study of Middle Jurassic strata.