Dictionary of Human Evolution and Biology

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Paleolithic Edge-to-mass Ratios

Ratio indicating the length of cutting edge per mass unit of material; cutting edge-to-mass ratios in Paleolithic tools increased dramatically as knapping techniques improved: Oldowan (2: 1), Abbevillean (3: 1), Acheulean (8: 1), Mousterian (40: 1), Magdalenean (250: 1).

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