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A paired bone forming part of the palate of many vertebrates
Skull diagram of Champsosaurus , showing the pterygoid bone
The pterygoid is a paired bone forming part of the palate of many vertebrates , behind the palatine bones .[1]
It is a flat and thin lamina, united to the medial side of the pterygoid process of the sphenoid bone, and to the perpendicular lamina of the palatine bone.[2]
References
Skull roof Composite bones
Interparietal
(Postparietal+Tabular)
Braincase Composite bones
Occipital
(Supraoccipital+Exoccipital+Basioccipital)
Otoccipital (Exoccipital+Opisthotic)
Parabasisphenoid
(Parasphenoid+Basisphenoid)
Petrosal (Prootic+Opisthotic)
Temporal (Squamosal+Petrosal+Ectotympanic)
Palate
Mandible Hyoid
Postcranial skeleton
Pectoral girdle
Forelimb Manus
Carpus Distal carpals
Distal carpal 1 (Trapezium )
Distal carpal 2 (Trapezoid )
Distal carpal 3 (Capitate
)
Distal carpal 4 (Hamate
)
Distal carpal 5
Pelvic girdle
Hindlimb Pes
Tarsus
Proximal tarsals
Tibiale
Intermedium
Calcaneum
)
Centralia
Centrale 1
Centrale 2
Centrale 3
Centrale 4
Distal tarsals
Distal tarsal 1 (Medial cuneiform
)
Distal tarsal 2 (Intermediate cuneiform
)
Distal tarsal 3 (Lateral cuneiform
)
Distal tarsal 4
Distal tarsal 5
Composite tarsals
) (Tibiale+Intermedium+Centrale 3+4)
Navicular
(Centrale 1+2)
Cuboid (Distal tarsal 4+5)
Miscellaneous
Baubellum
Gastralia
Ossified tendon
Osteoderms
Parentheses denote bones that receive a different name in particular clades
Italics denote neomorphic bones present only in particular clades