epipterygoid

from The Century Dictionary.

• Situated upon or above the pterygoid bone.
• noun In herpetology, a cartilage-bone, developed in some reptiles, which abuts on the superior face of the pterygoid.
• noun In ornithology, a hook-like process developed on the inner edge of the pterygoid near its articulation with the quadrate.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Anat.) Situated upon or above the pterygoid bone.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective anatomy Situated upon or above the pterygoid bone.
• noun An epipterygoid bone or cartilage; the columella in the skulls of many lizards.