Comparative Anatomical Analyses of the Forearm Muscles of Cebus libidinosus (Rylands et al. 2000): Manipulatory Behavior and Tool Use

2011/07/15 by Tales Alexandre Aversi‐Ferreira, Rafael S. Maior, Frederico O. Carneiro-e-Silva +4 · 42 citations
Psychology · Earth and Planetary Sciences · Environmental Science · #Primate Behavior and Ecology #Evolution and Paleontology Studies #Amphibian and Reptile Biology #Forearm #Biology #Anatomy #Evolutionary biology #Zoology

paper · pdf · doi:10.1371/journal.pone.0022165

published in PLoS ONE 6(7), e22165 (Public Library of Science)

openalex publication_date 2011/07/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The present study describes the flexor and extensor muscles in Cebus libidinosus' forearm and compares them with those from humans, chimpanzees and baboons. The data is presented in quantitative anatomical indices for similarity. The capuchin forearm muscles showed important similarities with chimpanzees and humans, particularly those that act on thumb motion and allow certain degree of independence from other hand structures, even though their configuration does not enable a true opposable thumb. The characteristics of Cebus' forearm muscles corroborate the evolutionary convergence towards an adaptive behavior (tool use) between Cebus genus and apes.

Citations

• The primate neocortex in comparative perspective using magnetic resonance imaging
• Wild capuchin monkeys (Cebus libidinosus) use anvils and stone pounding tools
• Arboreal bipedalism in wild chimpanzees: Implications for the evolution of hominid posture and locomotion
• Evolution of Primate Cognition
• Evolution of the brain and intelligence

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• Abductor pollicis longus muscle [wikipedia]

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