Neognathia

The Neognathia birds Aves whose palatal mobility has been increased via the following modifications (Feduccia 1980, 1996):

* Loss of the Basipterygoid articulation with the cranium.
* Development of a Pterygoid/Palatine joint.
* Reduction of the Vomer, such that it does not reach caudally to the pterygoid, or is lost entirely.