Functional Craniology, Human Evolution, and Anatomical Constraints in the Neanderthal Braincase

Part of the Replacement of Neanderthals by Modern Humans Series book series (RNMH)

Abstract

Neanderthals and modern humans share a similar cranial capacity but different neurocranial organization. Recently, digital anatomy and computed morphometrics have generated a revolution in functional craniology, allowing quantitative analyses to investigate integration and correlation among the anatomical elements, both in ontogeny and phylogeny. Despite some derived endocranial traits, Neanderthals display a general plesiomorph organization of the braincase. Geometrical and structural constraints between the endocranial soft and hard tissues may have induced morphogenetic limits to the growth and developmental processes. At the same time, heat production associated with a large cranial capacity and a plesiomorph vascular system may have also involved thermal limits. Although in paleontology morphogenetic and metabolic processes can only be investigated through indirect evidence, such hypotheses merit attention when considering the patterns of brain evolution in the genus Homo. It is tempting to wonder whether these limits may be also related to possible factors associated with the extinction of Neanderthals.

Keywords

Brain evolution Encephalization Neurocranial integration Paleoneurology 

Notes

Acknowledgements

I am grateful to Naomichi Ogihara for inviting me to join his team on Neanderthal brain evolution, and to Takeru Akazawa for coordinating this project. Thanks to Osamu Kondo, Hideki Amano, Yasushi Kobayashi, Hiroki Tanabe, and Daisuke Kubo, for their contribution and involvement. Thanks to José Manuel de la Cuétara for his collaboration on the study of the endocranial heat dissipation patterns and for his comments on this manuscript, to Giorgio Manzi for his help on the epigenetic traits, and to Shahram Sherkat and Simone Mantini for their participation in the study of the middle meningeal vessels. This paper is supported by the Proyecto Atapuerca (Spain) and by the Italian Institute of Anthropology (Italy).

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Copyright information

© Springer Japan 2014

Authors and Affiliations

  1. 1.Centro Nacional de Investigación sobre la Evolución HumanaBurgosSpain

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