Computer simulations show that Neanderthal facial morphology represents adaptation to cold and high energy demands, but not heavy biting.

ABSTRACT: Three adaptive hypotheses have been forwarded to explain the distinctive Neanderthal face: (i) an improved ability to accommodate high anterior bite forces, (ii) more effective conditioning of cold and/or dry air and, (iii) adaptation to facilitate greater ventilatory demands. We test these hypotheses using three-dimensional models of Neanderthals, modern humans, and a close outgroup (Homo heidelbergensis), applying finite-element analysis (FEA) and computational fluid dynamics (CFD). This is the most comprehensive application of either approach applied to date and the first to include both. FEA reveals few differences between H. heidelbergensis, modern humans, and Neanderthals in their capacities to sustain high anterior tooth loadings. CFD shows that the nasal cavities of N

SUBMITTER: Wroe S 

PROVIDER: S-EPMC5904316 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature