What is having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to Ant: prognathous. See Gnathic index, under Gnathic called?

orthognathous — Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to Ant: prognathous. See Gnathic index, under Gnathic. (Webster's 1913.)

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