- earliest evidence from h. habilis; disc in olduvai gorge, Tanzania- stone cores with flakes removed from part of the surface, edges made sharp
- disc in France; stone hand axe; pear shaped; used for skinning, digging, butchery, and cutting wood and plants. tools are found far and wide with a production rate that is longer than any other tool
- flint tools, assoc with neadtherals. mid paleolithic, disc in France
aurignacian- made with push blade tech. upper paleolithic, assoc with modern humans, disc in Europe. created blades not flakes, carved bones.