supported by the Knowledge Innovation Pro-gram of the Chinese Academy of Sciences (Grant No. KZCX2-YW-106);the National Natural Science Foundation of China (Grant No.40972017);the Major Basic Research Program of China (Grant No. 2006CB806400) ;the International Cooperation Program of China (Grant No. 2007DFB20330);OSL study was supported by the Project from the Hong Kong Research Grants Council (HKU703205)
Jingchuan human fossil, found in Gansu Province in 1976, was given a preliminary report in 1984, but questions remained con- cerning the age and character of the fossil. We conducted field investigation at Jingchuan i...