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在回顾似东方叶肢介科(新科)EosestheriopseidaeNiu(fam.nov.)内各属的特征、产出层位和分布的基础上,探讨了该科与真叶肢介科的亲缘关系,该科的起源,地层间的沉积间断和该科的迁移,以及Chuanjieestheria(gen.nov.),Eosestheriopsis,Yunnanograpta(gen.nov.)等属在滇中上侏罗统中的层位演化关系,首次提出麻地山组至安宁组和蛇店组至妥甸组的时代可能为晚侏罗世早期的意见,大体可与中国北方土城子组对比。Eosestheriopsis群和Pseudograpta群分别为中国南方特提斯区和北方太平洋区2个不同生物地理区的产物。这些成果对中国陆相侏罗纪地层划分与对比、生物地理区及其变迁、古构造研究等,都具有理论意义和实际价值。文中还描述了叶肢介的一些新属种。
On the basis of reviewing the characteristics, production horizon and distribution of the genera of EelstheriopseidaeNiu (fam. Nov.) In Oriental Yeti, , The sedimentary interval between strata and the migration of the family, as well as the evolution of the strata in Chuanjieestheria gen.nov. Eosestheriopsis and Yunnanograpta gen.nov. It is suggested that the age of Maodi Shan Formation to Anning Formation and Shendian Formation to Tandian Formation may be the early Late Jurassic period, which can be compared with Tuchengzi Formation in northern China. The Eosestheriopsis group and the Pseudograpta group are the product of two different biogeographic zones in the southern Tethys and the Northern Pacific, respectively. These achievements have theoretical significance and practical value for the division and contrast of continental continental Jurassic strata, biogeographical area and its vicissitudes, paleotectonics and so on. The article also describes some new species of leaf extremity.