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| Pàgina inicial > Articles > Articles publicats > Reconstruction of the locomotor repertoire of early primates in the light of astragalar and calcaneal shape |
| Data: | 2025 |
| Resum: | The locomotor behavior of the earliest euprimates is key to our understanding of the origin and early diversification of the group. Postcranial traits suggest that major locomotor shifts occurred during the early evolution of this clade. Two tarsal bones, the astragalus and the calcaneus, have been extensively studied because of their functional importance. To provide further insights into early primate evolution, we use a three-dimensional high-density sliding semilandmark geometric morphometric approach to quantify tarsal shape on an extensive (936) sample of astragali and calcanei from extant and extinct primates as well as other euarchontans. We reconstruct the locomotor repertoire for a total of 37 extinct taxa, representing all major Paleogene primate groups, using a partial least squares regression between astragalar/calcaneal shape and locomotor percentages compiled from the literature. Our results concur with previous studies and confirm that the astragalar/calcaneal shape exhibits a strong functional signal, allowing to accurately estimate the locomotor repertoire of extinct species. Locomotor estimates based on fossils indicate that early euprimates displayed a diverse array of locomotor repertoires comparable to extant species, highlighting cases of convergent evolution among distantly related groups. Locomotor differences between plesiadapiforms and early euprimates include a greater use of leaping by the latter, suggesting that the origin and early diversification of euprimates involved an important locomotor shift. Based on tarsal shape, this study improves our understanding of early primate locomotion and evolution, providing the most extensive taxonomic scope to date. |
| Ajuts: | Agencia Estatal de Investigación PID2020-116908GB-I00 Agencia Estatal de Investigación PID2020-117289GB-I00 Generalitat de Catalunya CLT0009_22_000022 Agència de Gestió d'Ajuts Universitaris i de Recerca 2022/SGR-01188 Agència de Gestió d'Ajuts Universitaris i de Recerca 2022/SGR-00620 Ministerio de Ciencia e Innovación RYC2021-034366-I Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/FI_B-00524 Agència de Gestió d'Ajuts Universitaris i de Recerca 2022/FI_B1-00131 Agència de Gestió d'Ajuts Universitaris i de Recerca 2023/FI-3-00131 |
| Nota: | Altres ajuts: acords transformatius de la UAB |
| Nota: | Altres ajuts: CERCA Programme/Generalitat de Catalunya |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Early euprimates ; Plesiadapiforms ; Astragalus ; Calcaneus ; Functional morphology ; Locomotion |
| Publicat a: | Journal of Human Evolution, Vol. 206 (September 2025) , art. 103730, ISSN 1095-8606 |
31 p, 44.8 MB |