The floor ( inferior wall ) is formed by the orbital surface of maxilla, the orbital surface of zygomatic bone and the minute orbital process of palatine bone.
22.
It articulates above with the orbital plate of the frontal bone, below with the maxilla and the orbital process of palatine bone, in front with the sphenoid.
23.
In birds, the palatine bones remain separate, long the sides of the rear part of the upper jaw, and typically have a mobile articulation with the cranium.
24.
The plates are separated below by an angular cleft, the pterygoid notch, the margins of which are rough for articulation with the pyramidal process of the palatine bone.
25.
Additionally, a distinct palatal fossa exists on the upper surface of palatine bone in " L . qianensis ", and the retroarticular process is very short.
26.
The nasal septum is composed of the quadrangular cartilage, the vomer bone ( the perpendicular plate of the ethmoid bone ), aspects of the premaxilla, and the palatine bones.
27.
A well-developed median or pineal eye is present on the top of the head ( parietal region ) and an addition row of upper teeth is located on the palatine bone.
28.
Each palatine bone somewhat resembles the letter L, and consists of a sphenoidal process, which surmount the vertical part, and are separated by a deep notch, the sphenopalatine notch.
29.
The bones of the facial skeleton are the vomer, two nasal conchae, two nasal bones, two maxilla, the mandible, two palatine bones, two zygomatic bones, and two lacrimal bones.
30.
The only difference between the two is that the edge of the maxilla that contacts the palatine bone ends behind the caniniform tooth buttress in " Baldwinonus " and ends on the buttress in " Stereophallodon ".
