archaeological excavations man and finds bones of a skeleton in a human burial, working tool, ruler, a detail of ancient resear

activity age anatomy ancient archaeological archaeologist archeology australopithecus bone bones burial buried cemetery cromagnon culture dead detail dig dirt discovery double erectus excavated excavation excavations explorer find finds fossil grave ground habilis historian history human man neanderthal old pair paleontologist paleontology people pithecanthropus prehistoric prehistory process resear research ruler sand sapiens science scientist sinanthropus skeleton skull study teeth tomb tool working