Short Faces, Big Tongues: Developmental Origin of the Human Chin

  title={Short Faces, Big Tongues: Developmental Origin of the Human Chin},
  author={Michael Coquerelle and Juan Carlos Prados-Frutos and Rosa Rojo and Philipp Mitteroecker and Markus Bastir},
  journal={PLoS ONE},
During the course of human evolution, the retraction of the face underneath the braincase, and closer to the cervical column, has reduced the horizontal dimension of the vocal tract. By contrast, the relative size of the tongue has not been reduced, implying a rearrangement of the space at the back of the vocal tract to allow breathing and swallowing. This may have left a morphological signature such as a chin (mental prominence) that can potentially be interpreted in Homo. Long considered an… 

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