Nut Cracking Tools Used by Captive Chimpanzees (Pan troglodytes) and Their Comparison with Early Stone Age Percussive Artefacts from Olduvai Gorge
Fig 8
Comparison of different passive elements showing similarities in the wear pattern.
A) Tool use by a captive chimpanzee; B) Anvil from SHK, Olduvai Gorge (Leakey’s collection); C) Anvil used to crack/open nuts by modern humans; D) Anvil used to tenderize meat (C and D from de la Torre et al., Figs 6B and 8C [14]).