Having four equal sides and four right angles
To be compatible or in correspondence
The quadrate is invariably a conspicuous bone and movably articulating with the cranium and by a special process with the pterygoid.
Premolars compressed, pointed; and the molars with quadrate tuberculated crowns.
Maxillary horizontal; pterygoid reaching quadrate or mandible.
The maxillaries are connected with the distal anterior corner of the quadrate by the thin, splint-like jugal and quadratojugal.