New Scientist

Image:  James St. John

A haul of ancient stone tools has plugged a big gap in China’s archaeological record, challenging our understanding of how our species spread around the world.

Our hominin predecessors began making stone tools more than 3 million years ago. As time went on, these tools became more complex. About 300,000 years ago, a new style of tool made using “Levallois” techniques began to appear in Africa and western Eurasia.

Rather than chipping flakes off a stone to create a tool, Levallois techniques work on the stone so it is the flakes themselves that become the tools. This enables several tools to be made from a single stone. Read more on newscientist.com…