Pterygoid bone

Paired bone forming part of the palate of many vertebrates From Wikipedia, the free encyclopedia

The pterygoid is a paired bone forming part of the palate of many vertebrates, behind the palatine bones.[1]

Skull diagram with 26 colors labeling individual single or paired bones
Skull diagram of Champsosaurus, showing the pterygoid bone in red-violet (visible in inferior view at lower right and posterior to the ectopterygoid bone in lateral view at top)
Skull of the early reptile Milleretta (Millerettidae), showing the pterygoid bearing palatal teeth in green (labeled pt, bottom right)

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] In many early tetrapods the pterygoid bears teeth (palatal dentition), which are retained by some living squamates.[3]

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