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

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