Acheulian science definition

Relating to a stage of tool culture of the Lower Paleolithic Period, dating from around 1.5 million to 150,000 years ago, characterized especially by flaked bifacial hand axes, cleavers, and other core tools. The earliest Acheulian tools have been found at African sites associated with Homo erectus fossils. Later examples have been found at numerous sites in the Middle East, Europe, and western and southern Asia.