The date when stone-age humans first invented the lethal technology of spears and arrows has been set back many thousands of years with the discovery of small stone blades dating to 71,000 years ago.
Archaeologists believe the “bladelets” were used as the sharp tips for arrows or spears and were made by a relatively sophisticated technique involving the heat treatment of stone before shaping the final cutting edges.
The fine stone blades were excavated from a prehistoric site called Pinnacle Point on the southern coast of South Africa and are between 6,000 and 11,000 years older than the previous oldest known samples of spear and arrow blades, scientists said.
The discovery suggests that the invention of lethal projectile weapons came far earlier in the course of human prehistory than previously realised and that, once invented, the knowledge was passed down the generations, according to a study in Nature led by Curtis Marean of Arizona State University.
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