These early murals, called petroglyphs, depict scenes of animals. Uranium series dates were attained by Bar-Matthews on speleothem the material of stalagmitesand optically stimulated luminescence dates were developed by Jacobs.
If there is no distinct boundary, then the population of A suddenly stopped using the customs characteristic of A and suddenly started using those of B, an unlikely scenario in the process of evolution. This is the time when cereal cultivation and animal domestication was introduced. In Sub-Saharan Africa, however, iron-working technologies were either invented independently or came across the Sahara from the north see iron metallurgy in Africa.
Like potterythe typology of the stone tools combined with the relative sequence of the types in various regions provide a chronological framework for the evolution of man and society. The first tools were made out of stone.
They begin in the open areas of Italy and Spain, the earliest dated to 1.
Modern Awash RiverEthiopia, descendant of the Palaeo-Awash, source of the sediments in which the oldest Stone Age tools have been found The Stone Age is contemporaneous with the evolution of the genus Homothe only exception possibly being the early Stone Age, when species prior to Homo may have manufactured tools.