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Tools found there are rough chipped bifacial handaxes made during the Elsterian Stage of the Pleistocene Ice Age, which covered central Europe between 478,000 and 424,000 years ago.
The Abbevillian is a phase of Olduwan that occurred in Europe near, but not at, the end of the Lower Palaeolithic (2.5 mya. Those who adopt the Abbevillian scheme refer to it as the middle Acheulian, about 600,000-500,000 years ago.
The one small spot of smaller flaking on one edge may indicate that it is borderline between Olduwan and Acheulean. Abbevillian is a currently obsolescent name for a tool tradition that is increasingly coming to be called Oldowan (or Olduwan). Chellean included artifacts discovered at the town of Chelles, a suburb of Paris. Later anthropologists substituted Abbevillian for Chellean, the latter which is no longer in use.The data show when a surface, such as an alluvial fan, was created.Burial dating uses the radioactive decay of two elements to find the age when a sediment was buried away from cosmic rays.Three points of view are emergent: Non-handaxe sites are often the same sites as handaxe sites, the difference being one of time, or, if geographically different, have no discernible spatial pattern.The physical evidence is summarized in the table below Note that the dates assigned vary widely after 700,000 ya and, except where substantiated by scientific methods, should be viewed as tentative and on the speculative side.