Dictionary of Human Evolution and Biology

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Prognathism

1. forward projection of the jaws, or prominence of the snout. Adjectives: prognathous, prognathic.

2. in modern humans, a heritable condition in which the mandible extends well forward of the maxilla, nose and forehead; aka Hapsburg jaw.

3. in general zoology, having a head that is horizontal with the mouth located anteriorly.

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