Un article de Miranda E. Karban, Department of Biology, Illinois College, paru le 2 décembre 2019 dans "American Journal of Physical Anthropology".

Mon avis : Le fameux "chignon occipital" de l'Homme Néandertal ne sera pas compris en dehors d'une prise en considération des cinématiques du tube neural et des synchondroses sphénoïdales (base du crâne). Là débutent les différences entre l'homme anatomiquement moderne (Homo sapiens Linné, 1758) et les autres taxons fossiles du genre Homo, avant la formation des hémisphères cérébraux.

"Although the homology of the Neanderthal occipital bun and anatomically modern human “hemi‐bun” has long been debated, little is known about the developmental timing and patterning of these two patterns of prominent occipital squama convexity. In this study, occipital hemi‐bun ontogeny and cranial shape covariation are assessed in a comparative extant human sample.  (...)

This study suggests that the occipital hemi‐bun, at least in this extant human population, should not be considered an independent trait, as its development is closely linked to shape variation in the frontal and parietal bones. Importantly, these results suggest that occipital hemi‐bun morphology is not significantly influenced by basicranial morphology during development, but instead covaries with changes in midsagittal neurocranial vault shape."