31335012Sub-Saharan African Earlier Stone Age periodsPT2026-03-30 20:30:17UF31335013Sub-Saharan African Earlier Stone Age periodNDUF31335014period, Sub-Saharan African Earlier Stone AgeNDUF31335015periods, Sub-Saharan African Earlier Stone AgeNDBT31312578prehistoric Sub-Saharan African periodsPTNT31363342Pre-ChelleanPTNT31363343Chelles-AcheulPT