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Surprising similarities in stone tools of early humans and monkeys

Accidentally produced stone fragments made by macaques resemble some of the earliest hominin stone artifacts

Researchers from the Max Planck Institute for Evolutionary Anthropology have discovered artefacts produced by old world monkeys in Thailand that resemble stone tools, which historically have been identified as intentionally made by early hominins. Until now, sharp-edged stone tools were thought to represent the onset of intentional stone tool production, one of the defining and unique characteristics of hominin evolution. This new study challenges long held beliefs about the origins of intentional tool production in our own lineage.

© Lydia V. Luncz