The upper jaw is slightly prognathous and the roof of the mouth unusually arched.
"The Former Philippines thru Foreign Eyes"
Tomás de Comyn Fedor Jagor Rudolf Ludwig Carl Virchow Charles Wilkes
But in repose his face grew stern and forbidding, and when his prognathous jaw, indicative of will-power and bull- dog tenacity, snapped to with a click-like sound, those who heard it knew that squalls were coming.
"The Lion and the Mouse A Story of an American Life"
Charles Klein
They are of very light colour, have fine noses, well-cut and not over-full lips, while the prognathous jaw is uncommon.
"How I Found Livingstone"
Sir Henry M. Stanley