I.INTRODUOTION Studies on the Cambrian faunas made by Walcott,Sun,Endo,Kobayashi,and Chang have laid down the foundation for the classification of Cambrian system in China.In 1922,Sun first demonstrated the upper boun...I.INTRODUOTION Studies on the Cambrian faunas made by Walcott,Sun,Endo,Kobayashi,and Chang have laid down the foundation for the classification of Cambrian system in China.In 1922,Sun first demonstrated the upper boundary of the Cambrian and a paper on the Cambrian,Ordovician and Silurian of China was presented before the 14th International Geological Congress at Madrid in Spain,1926.展开更多
文摘I.INTRODUOTION Studies on the Cambrian faunas made by Walcott,Sun,Endo,Kobayashi,and Chang have laid down the foundation for the classification of Cambrian system in China.In 1922,Sun first demonstrated the upper boundary of the Cambrian and a paper on the Cambrian,Ordovician and Silurian of China was presented before the 14th International Geological Congress at Madrid in Spain,1926.
