(CNN)The story of human evolution may need a rewrite after 2.12-million-year-old tools were found in central China.
Stone tools in China could be earliest evidence of human life outside Africa
The most ancient of these tools -- a collection of hammerstones, pointed pieces and scrapers -- are some 270,000 years older than what was previously thought to be the earliest evidence of human life outside Africa, according to a new paper in the journal Nature.
And scientists believe there may be even older tools at the site -- in Shangchen, in Shaanxi province's Lantian county -- that can't be accessed because of farming in the area.
The team that discovered the tools was led by Zhaoyu Zhu, a geologist at the Chinese Academy of Sciences.