The evolution of facial length and molar proportions in cercopithecid monkeys DOI Creative Commons
Tesla A. Monson, Marianne F. Brasil

Frontiers in Ecology and Evolution, Journal Year: 2025, Volume and Issue: 13

Published: April 15, 2025

Introduction Papionins are a well-studied and morphologically diverse clade of cercopithecid monkeys. Understanding how craniodental morphology varies in this has implications for interpreting taxonomic variation the fossil record our understanding primate evolution. Methods We quantified phenotypic relationship between facial length dental proportions N=314 individuals across 10 species (six papionins, two cercopithecins, colobines) using ratios MMC (molar module component, ratio lengths third first molars) PMM (premolar-molar module, second molar fourth premolar) metrics length: palatal prosthion – glabella. Results Facial significantly correlated interspecifically cercopithecids (PGLS, p <0.01), where with longer faces have relatively maxillary mandibular molars. These traits generally not intraspecifically sampled, some exceptions. Discussion Our data demonstrate that prognathic evolved convergently at least twice parsimony supporting Papio/Theropithecus shared ancestor after divergence Lophocebus. Additionally, study lends support to hypothesis reduction human evolution were coordinated may been result pleiotropy alongside changes diet.

Language: Английский

The evolution of facial length and molar proportions in cercopithecid monkeys DOI Creative Commons
Tesla A. Monson, Marianne F. Brasil

Frontiers in Ecology and Evolution, Journal Year: 2025, Volume and Issue: 13

Published: April 15, 2025

Introduction Papionins are a well-studied and morphologically diverse clade of cercopithecid monkeys. Understanding how craniodental morphology varies in this has implications for interpreting taxonomic variation the fossil record our understanding primate evolution. Methods We quantified phenotypic relationship between facial length dental proportions N=314 individuals across 10 species (six papionins, two cercopithecins, colobines) using ratios MMC (molar module component, ratio lengths third first molars) PMM (premolar-molar module, second molar fourth premolar) metrics length: palatal prosthion – glabella. Results Facial significantly correlated interspecifically cercopithecids (PGLS, p <0.01), where with longer faces have relatively maxillary mandibular molars. These traits generally not intraspecifically sampled, some exceptions. Discussion Our data demonstrate that prognathic evolved convergently at least twice parsimony supporting Papio/Theropithecus shared ancestor after divergence Lophocebus. Additionally, study lends support to hypothesis reduction human evolution were coordinated may been result pleiotropy alongside changes diet.

Language: Английский

Citations

0