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将我国和亚洲中、东部含有狼鳍鱼等热河动物化石群的热河群,和外贝加尔群中、上部以至含有四川动物化石群的归州群,视作下白垩统或白垩系的年代划分标准,最初是葛利普等1923—1928和美国中亚考察团1922—1935所建立,曾统一采用于我国和苏联等国家。30年代中期至40年代,李春昱、杨钟健等怀疑归州群全属白垩系,小林贞一等提出否定葛利普标准的新意见。至60年前后,我国多数地质古生物工作者把热河群和归州群群视为侏罗纪地层,少数有不同意见;苏联学者对蒙古和贝加尔湖区非海相中生界时代划分的葛利普标准,也提出一些修正。70年代,我国部分地层工作者认为热河群全部或上
The Jehol Group containing the Jehol Fossil Fossils in the Central and Eastern Asia, including the Upper Reaches of the Waigaigar Group and the Guizhou Group containing the Sichuan Animal Fossils, is regarded as the Lower Cretaceous or Cretaceous Divided criteria, initially established by Ge Lipu et al. 1923-1928 and the United States delegation in Central Asia 1922-1935, were used uniformly in China, the Soviet Union and other countries. From the mid-1930s to the 1940s, Li Chunyu and Yang Zhongjian all suspected that the state belonged to the Cretaceous, while Xiaolin Zhen first proposed a new opinion that denied the Galip standard. Until 60 years ago, most of the geologic and paleontological workers in our country regarded the Jehol Group and the Guizhou Group as Jurassic strata, and a few have different opinions. The Soviet Union scholar of the Grippe standard for the non-marine Mesozoic era in Mongolia and Lake Baikal , Also made some amendments. In the 1970s, some strata workers in our country think that the Rehe group are all or above