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<正>120 years ago,1897,Prof.Dr.Yang Zhongjian(C.C.Young)was born in Huaxian,Shaanxi Province:the birth of a great scientist.90 years ago,in 1927,Prof.Yang’s doctoral dissertation"Fossile Nagetiere aus Nord-China",was published in Palaeontologia Sinica C,V(3);this marked the beginning of study of vertebrate paleontology(VP)by the Chinese people.