In 1928, the Lycoptera-Eosestheria-Ephemeropsis fossil assemblage from Lingyuan distrinct of westhern Liaoning Province,China was named as Rehol Fauna by American palaeotologist.Grabau,A.W. Professor Gu Zhi-wei calls this fossil assemblage as Rehol Biota in 1962.In 1980-1990 of the last centural,Classes Osteichthyes, Amphibia,Reptilian,Aves,Mammalia fossils were found from Yixian Formation and Jiufotang Formation of Mesozoic strata in westhern Liaoning Province,China.At same time,this fossils were yet found...