Homo erectus versus modern humans frontal breathing mechanics.

This great video was produced by Dr Benoit Beyer and shows a comparative view on breathing movements of the ribs of the Turkana Boy (KNM-WT 15000 "15K") and modern humans.

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Animated breathing motion of the ribcages of the Turkana Boy (KNM-WT 15000; Homo erectus; left) and a modern human (right), both shown in frontal view. We used the same ranges of motion in both rib cages, but the shape of the ribs and vertebrae in Homo erectus produce a different kinematic pattern, with lesser rib elevation, than in modern humans. Licence CC-BY-NC-ND 4.0; Copyright Benoit Beyer.

See: Behind the Paper post

Go to the profile of Markus Bastir

Markus Bastir

Senior Researcher, Museo Nacional de Ciencias Naturales, CSIC, Madrid

Paleoanthropology, 3D Morphometrics, Human Evolutionary Anatomy

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Go to the profile of marc verhaegen
marc verhaegen about 1 month ago

Thanks a lot for this.  The very wide & large thorax of Turkana Boy is not unexpected: most if not all archaic Homo had very large thoraxes, not for running long distances as often assumed,  but rather for collecting shallow-water foods such as shellfish (rich in brain-specific nutrients, e.g. DHA). Turkana Boy fossilized in former lake, where they not only waded bipedally but also regularly dived for shallow-aquatic foods, for scientific references google e.g. "coastal dispersal of Pleistocene Homo 2018 Verhaegen".