A recent study reveals that australopithecines, including Lucy’s species, may have used tools over 3 million years ago. By examining muscle attachment sites on their hand bones, researchers found traits indicating a high degree of dexterity. This discovery could redefine our understanding of the timeline for tool use, suggesting that early human ancestors developed …A recent study reveals that australopithecines, including Lucy’s species, may have used tools over 3 million years ago. By examining muscle attachment sites on their hand bones, researchers found traits indicating a high degree of dexterity. This discovery could redefine our understanding of the timeline for tool use, suggesting that early human ancestors developed …