Mac Barney divides the Upper Paleolithic era into four successive phases. The final phases of "Laflouis", even if replaced after that by the industries of "Hakfat el-Dabaa" whose influence reaches Tunisia and eastern Algeria.There is a third stage - supposedly by "McBerney" (the period 10,000 - 9,000 BC) - in which the Oran industries dominate And the region of the Libyan coast until Cyrenaica, and perhaps Lower Egypt, and in the fourth stage - which is assumed by "Mac Bernie", the period (9,000 - 5,000 BC) takes the "Civic civilization" to flourish and spread "to include all of North Africa, and replace the "Oranian", although The cage was developing in "Sirt" 2 into a type of distinct dwarf industries (microlithic) that we can call "Sirt microlithic".