2/15/2023 0 Comments Bead tool 4 cracked![]() This discovery speaks of true prehistoric great ape behavior that predates the onset of agriculture in this part of Africa ( 8). The archaeological evidence retrieved consists of behaviorally modified stones, dated by chronometric means to 4,300 years of age, whose attached food residue suggests chimpanzee manipulation, rather than natural causes or human intervention. To test the feasibility and scope of the new methodology, we conducted further work in Taï National Park, and investigated the existence of ancient chimpanzee sites and whether these sites would offer an answer to the long-standing question of the antiquity of nut-cracking behavior ( 6, 7). In 2002, the publication of recent buried remains of unintentionally fractured stone left behind by modern chimpanzees from Côte d'Ivoire outlined the potential of using archaeological methods in cultural primatological research and also identified the type of material assemblage that would allow archaeologists to detect and characterize ancient chimpanzee nut-cracking behavior. Tool use among modern wild ape populations, first reported in the early 19th century ( 1), has been documented throughout tropical Africa, and chimpanzees from West Africa are known for their use of stone tools for nut cracking ( 2– 6). ![]()
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