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Found monkey owned ancient technology 

An international team of scientists from Brazil and the UK found out that capuchin monkeys used tools three thousand years ago. This is reported in a press release on Phys.org.
Researchers studied the behavior of monkeys in the Brazilian Serra da Capivara National Park. Scientists have noticed that the Capuchins used quartz stones to break up cashews. In doing so, they put nuts on a large stone, playing the role of an anvil, or the hard root of a tree, and then hit it with a small piece of rock. After such strokes, characteristic traces remain both on the stone instrument and on the “anvil”, including brown spots from broken cashew fruits.
Specialists then excavated in search of similar fossil traces and found artifacts with notches aged up to three thousand years. The older the stone instrument was, the finer it was. About 560 years ago, animals began to use larger tools of labor, and 300 years ago monkeys switched to stones of such size that they are widely used now.
It is known that labor tools are also used by chimpanzees (for more than four thousand years), and among other animals there are birds that break off branches in order to get insects from tree bark with their help.

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