Stone tools clipart image

Stone tools found from 2011 to 2014 at Lake Turkana in Kenya, are dated to be 3. 3 million years old, and predate the genus Homo by half million years. The oldest known Homo fossil is 2. 8 million years old compared to the 3. 3 million year old stone tools. The stone tools may have been made by Australopithecus afarensis or Kenyanthropus platyops— (a 3. 2 to 3. 5-million-year-old Pliocene hominin fossil discovered in 1999) the species whose best fossil example is Lucy, which inhabited East Africa at the same time as the date of the oldest stone tools. Dating of the tools was by dating volcanic ash layers in which the tools were found and dating the magnetic signature (pointing north or south due to reversal of the magnetic poles) of the rock at the site.

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