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Évolution du chondrocrâne et de la face des grands anthropoïdes miocènes jusqu'àHomo sapiens, continuités et discontinuités

Elsevier SAS
Publication Date
DOI: 10.1016/j.crpv.2005.09.024
  • Chondrocrâne
  • Face
  • Sphénoïde
  • Hominidés
  • Équilibres Ponctués
  • Bipédie
  • Paradigme
  • Chondrocranium
  • Sphenoid
  • Punctuated Equilibria
  • Bipedalism
  • Paradigm


Abstract Evolution of chondocranium and face in hominids up to Homo sapiens: continuities and discontinuities . The chondocranium forms the base of the embryonic mammal cranium, with three cartilaginous nucleuses, the basi-ethmoid, the basi-sphenoid and the basi-occipital, all in a same alignment. They are differently aligned at birth, with a verticalization of the facial pole towards the occipital pole. The origin of this verticalization is the rotation of the basi-sphenoid, consequence of the rolling up of the underlying neural tube. The hominids and their descendants present a more important rotation than the living and fossil apes and, for the first time, is permanent from child to adult. Their apparition is inscribed in a process perceivable when one considers time at a large scale: continuous but presenting discontinuous effects. To cite this article: A. Dambricourt-Malassé, C. R. Palevol 5 (2006) .

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