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Pan troglodytes discover to make and use stonetoolson their own , rather than copying mankind , new evidence suggests .
And this means that Pan troglodytes and human race in all probability inherited some of their sophisticated stonetool - use behaviorsfrom a common ancestor , a report on the grounds claims .
Closeup of a so-called ‘chimpanzee stone hammer’ under excavation.
The handheld hammers were bump at achimpanzeesettlement in the Ivory Coast and engagement back 4,300 year . Chimpanzees have been observed using similar tools for the past few 100 , but scientist assumed the intelligent apes were simply replicate local people cutting opened yield nearby .
" The thinking until now was that if modern mean solar day chimpanzee use hammers , it was only because they ’re imitating neighboring Farmer , " said Julio Mercader , archeologist at the University of Calgary and conscientious objector - author of the field . " But what we ’ve found predates farming in the area . "
Since the ancient chimpanzees belike did n’t learn the behaviour from their present-day Isle of Man , humans and chimps may have " inherit " the power from a mutual antecedent , investigator mull over .
First Case of Prehistoric Chimp Tools
Though there were nochimpanzee remainsat the settlement , testing by archaeologists revealed the creature - laden camp was most belike used by the Great Ape . The rock were much bigger than anything a human could practice well and bore the balance of nuts that modern chimpanzees like to nosh on .
" This is the only font of any prehistorical , non - human neat Ape tool use ever discovered , " Mercader toldLiveScience
Chimpanzees alive in the natural state today are often see using pounding tool to crack up nuts , much like what our ancient ancestors did a few million years ago . The technology is transmitted socially – or taught , rather than instinctive from birth – and can take up to seven class for a young chimp to sea captain , many scientists have found .
" What make our find different is that we can demo a prehistoric context for this , and that opens many door , " Mercader said . " Social infection was the only way for this to happen . "
It suggests that there is a " culture " connexion between chimps today and their ancient ancestors , one that could go back even further than a few thousand days , he say . Since human Lucy Stone tool use was find out the same room , it ’s possible that both short letter were taught by a single source , perhaps even millions of year ago .
Technology Not a Smooth Line
The conversion from billion of eld ago to the chimpanzees that live at the ancient colonization would not have been still , say Mercader . Other apes in nearby areas may not have used the nut case - smashing proficiency at all , he enunciate , and the find asks many questions about why and how this picky group in the Ivory Coast was able to grasp the concept .
It does dispel the notion , however , that homo were the only forest - denizen with any brains .
" We used to call back thatcultureand , above anything else , technology was the exclusive knowledge base of humans , " Mercader said , " but this is not the case . "
