ArticleProceedings of the National Academy of Sciences of the United States of America2026
A kinematic convergence in ape and monkey vertical climbing informs debates on early hominin arborealism.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Recent debates on early hominin arborealism center around interpretations of fossilized foot bones as being either "African ape"- or "monkey"- like in their morphology. These dueling interpretations fuel competing locomotor reconstructions of the last common ancestor of chimpanzees and humans (LCA), including disagreements about the prevalence of vertical climbing behaviors. Yet it remains unclear if possessing an ape- or monkey-like foot impacts the safety and efficiency of climbing, in part because few kinematic data exist on cercopithecoid monkeys moving in their natural habitats. Here, we present detailed kinematic data on the feet of a prolific vertically-climbing cercopithecoid monkey (
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