Archaeologists in Kenya have discovered a series of stone tools that are the oldest to date. At an estimated 3.3 million years old, they are older than the known remains of the genus Homo by 700,000 years. Previously, it was believed that Homo began using tools first, but this discovery has now called that notion into question.

The tools are believed to have been used for cutting flakes off stones to create sharper edges. They are so distinct that they have been named the Lomekwian, after the Lomekwi 3 site where they were discovered in West Turkana, Kenya. 

Image via The Verge. . Image 1.Image via The Verge.

Several anthropologists believe that this discovery is a "game changer," and will force us to reexamine the timeline of our evolution as a species. Jason Lewis, the co-author of the original paper, believes that there are even older tools still out that have yet to be found.

The genus Homo, which emerges later than the tools, includes early humans who had larger brains, ate more meat, and began developing language. The discovery means that they were not the first group to use tools.