prognathous

adj

1. Having jaws that project forward more than is usual, or being such a jaw.

   “A huge brute with thick lips and prognathous jaw stood at her shoulder. He was talking loudly and gesticulating wildly.”

   “Phycosecids are small, ovate, convex beetles with a prognathous head, partly covered by a semicircular projection of the pronotum and a dorsal vestiture of whitish scales or scalelike setae.”