Trop génial ! l’un dans l’autre, la co-évolution du poing et de la gueule explique le dimorphisme sexuel des crânes humains.
Facing a Violent Past | University of Utah News
▻http://unews.utah.edu/news_releases/facing-a-violent-past
“When modern humans fight hand-to-hand the face is usually the primary target. What we found was that the bones that suffer the highest rates of fracture in fights are the same parts of the skull that exhibited the greatest increase in robusticity during the evolution of basal hominins. These bones are also the parts of the skull that show the greatest difference between males and females in both australopiths and humans. In other words, male and female faces are different because the parts of the skull that break in fights are bigger in males,” said Carrier.
“Importantly, these facial features appear in the fossil record at approximately the same time that our ancestors evolved hand proportions that allow the formation of a fist. Together these observations suggest that many of the facial features that characterize early hominins may have evolved to protect the face from injury during fighting with fists,” he said.
Le résumé (article derrière #paywall)
Protective buttressing of the hominin face - David R. Carrier, and Michael H. Morgan - 2014 - Biological Reviews - Wiley Online Library
▻http://onlinelibrary.wiley.com/doi/10.1111/brv.12112/abstract
Les auteurs sont des récidivistes, l’année dernière ils expliquaient l’évolution de la main comme un avantage sélectif pour la bagarre
Protective buttressing of the human fist and the evolution of hominin hands. - ResearchGate
▻http://www.researchgate.net/publication/233958422_Protective_buttressing_of_the_human_fist_and_the_evolution_o
Thus, the proportions of the human hand provide a performance advantage when striking with a fist. We propose that the derived proportions of hominin hands reflect, in part, sexual selection to improve fighting performance.
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Et un réjouissant KO debout réalisé par Brian Switek chroniqueur de National Geographic
Our Skulls Didn’t Evolve to be Punched – Phenomena : Laelaps
▻http://phenomena.nationalgeographic.com/2014/06/10/our-skulls-didnt-evolve-to-be-punched
Hands evolved to punch faces. Faces evolved to take punches. That’s the hypothesis being bandied about by University of Utah researchers Michael Morgan and David Carrier, the pair proposing that the apparent “protective buttressing” of our skulls and hands is a sign of violent prehistoric fights where fists of fury dictated who would mate and who would exit the gene pool. It’s a great example of a just-so story.
(…)
This is bro science – dudes pummeling each other driving human evolution.
Ainsi illustré
