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4-million-year-old hand debunks a popular theory of human evolution – Inverse

A new study suggests the last common ancestor of chimpanzees and humans was capable of swinging from tree to tree.

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Tarzan swinging from tree to tree
might seem like a Hollywood attempt at imagining the life of primitive men, but new findings suggest our ancient ancestors really were swingers.
The study seemingly resolves a long-standing scientific debate over our ancestor’s ability for brachiation the ability to swing from tree limbs only using one’s arms. Before this ancestor experienced an evolutionary shift toward using hands for tools and legs for walking, they likely knuckle-walked on the ground and glided…

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