Scientists have unearthed more than 350 ancient tools in Konso, Ethiopia that were used by humans' ancient ancestors. The tools, which span roughly 1 million years of evolution, show a gradual progression to more refined shaping.
Scientists have unearthed and dated some of the oldest stone hand axes on Earth. The ancient tools, unearthed in Ethiopia in the last two decades, date to 1.75 million years ago.
The tools roughly coincided with the emergence of an ancient human ancestor called Homo erectus, and fossilized H. erectus remains were also found at the same site, said study author Yonas Beyene, an archaeologist at the Association for Research and Conservation of Culture in Ethiopia. Collectively, the finding suggests an ancient tool-making technique may have arisen with the evolution of the new species.
"This discovery shows that the technology began with the appearance of Homo erectus," Beyene told LiveScience. "We think it might be related to the change of species."
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