quadratojugal

1. not comparableanatomyOf or pertaining to the quadrate and jugal bones.
2. not comparableanatomyOf or pertaining to the quadratojugal bone.

plural quadratojugals

1. anatomyA small jaw bone found in the skull of most reptiles, amphibians and birds.

   1 more example

   The quadratojugals are relatively large in the primitive skull, sometimes forming a part of the articular surface for the mandible (Fig. 21 b). In the single-arched skull the quadratojugal tends to disappear. It is probably present in all Theromorpha, but is often confined chiefly to the posterior side of the quadrate

   1925, Samuel Wendell Williston, “Chapter 1”, in The Osteology of the Reptiles