Up to the present there has been no definite report made upon the few skeletal remains of Sinanthropus other than skull parts and teeth, that have been recovered from the Choukoutien cave deposit at rare intervals since 1928. Up to the present there has been no definite report made upon the few skeletal remains of Sinanthropus other than skull parts and teeth, that have been recovered from the Choukoutien cave deposit at rare intervals since 1928.