section_path: Early humans (before Homo sapiens)
section_name: Early humans (before Homo sapiens)
paragraph_text: Early humans (before Homo sapiens)
  
  The earliest humans developed out of australopithecine ancestors about 3 million years ago, most likely in the area of the Kenyan Rift Valley, where the oldest known stone tools have been found. Stone tools recently discovered at the Shangchen site in China and dated to 2.12 million years ago are claimed to be the earliest known evidence of hominins outside Africa, surpassing Dmanisi in Georgia by 300,000 years.