Encephalization and diversification of the cranial base in platyrrhine primates

Journal of Human Evolution
Leandro AristideS Ivan Perez

Abstract

The cranial base, composed of the midline and lateral basicranium, is a structurally important region of the skull associated with several key traits, which has been extensively studied in anthropology and primatology. In particular, most studies have focused on the association between midline cranial base flexion and relative brain size, or encephalization. However, variation in lateral basicranial morphology has been studied less thoroughly. Platyrrhines are a group of primates that experienced a major evolutionary radiation accompanied by extensive morphological diversification in Central and South America over a large temporal scale. Previous studies have also suggested that they underwent several evolutionarily independent processes of encephalization. Given these characteristics, platyrrhines present an excellent opportunity to study, on a large phylogenetic scale, the morphological correlates of primate diversification in brain size. In this study we explore the pattern of variation in basicranial morphology and its relationship with phylogenetic branching and with encephalization in platyrrhines. We quantify variation in the 3D shape of the midline and lateral basicranium and endocranial volumes in a large sample of pla...Continue Reading

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Citations

Feb 10, 2016·Proceedings of the National Academy of Sciences of the United States of America·Leandro AristideS Ivan Perez
Aug 10, 2016·Journal of Anatomy·Christoph P E ZollikoferMarcia S Ponce de León
Sep 25, 2018·Evolution; International Journal of Organic Evolution·Leandro AristideS Ivan Perez
Apr 12, 2019·American Journal of Physical Anthropology·Leandro AristideS Ivan Perez
Jul 11, 2019·American Journal of Physical Anthropology·Dimitri NeauxGabriele Sansalone
Oct 28, 2019·Scientific Reports·Guido Rocatti, S Ivan Perez
Apr 3, 2018·Journal of Human Evolution·Dimitri NeauxStephen Wroe
Oct 22, 2017·Journal of Human Evolution·Dimitri NeauxMichel Brunet
Aug 30, 2021·Brain Structure & Function·Paula N GonzalezS Ivan Perez

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