Archeology radiocarbon dating
In some regions Acheulean tool-using groups were contemporary with other, less sophisticated industries such as the Clactonian.
Then, later, Acheulean tools occur at the same time as the more sophisticated Mousterian.
The geological period which corresponds to the Palaeolithic is the Pleistocene.
Stone tools were not only made by our own species, Homo sapiens.
Numerical dates can be misleading however, and it is common to associate examples of this early human tool industry with one or more glacial or interglacial periods or with a particular early species of human.
The move towards agriculture started in the Middle East.
During the Palaeolithic Age humans grouped together in small bands.
These tools are the first cultural products which have survived.
The Palaeolithic age began when hominids (early humans) started to use stones as tools for bashing, cutting and scraping.
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For a long time it was thought that the Oldowan was the earliest stone tool industry in prehistory, from 2.6 million years ago up until 1.7 million years ago.