New Scientist said:
The hunt for food led hominins to cast the first stone half a million years ago – 200,000 years earlier than we thought. Archaeologists have found the oldest evidence yet of stone-tipped spears.
The new discovery in South Africa suggests that it was neither our species nor Neanderthals that pioneered the use of such spears, but our shared ancestor Homo heidelbergensis.
We already knew that Homo heidelbergensis could fashion wooden spears – a 500,000-year-old horse shoulder blade from Boxgrove, UK, has a semicircular hole in it that suggests it was pierced by a spear. "But the hole's bevelled edges and circular shape are not suggestive of a stone-tipped weapon," says Jayne Wilkins at the University of Toronto in Ontario, Canada.
Stone points used on spears had been found only at sites that date back no more than 300,000 years, and that are associated with Neanderthals or archaic members of our species.