Pterygoid bone

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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) Champsosaurus skull diagram.svg
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) Milleretta rubidgei (skull and reconstruction).png
Skull of the early reptile Milleretta (Millerettidae), showing the pterygoid bearing palatal teeth in green (labeled pt, bottom right)

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

References

  1. ↑ "Origin of the pterygoid bone and pharyngeal musculature in mammals". crompton.oeb.harvard.edu. Retrieved 2024-01-29.
  2. ↑ "Pterygoid bone - vet-Anatomy - IMAIOS". www.imaios.com. Retrieved 2024-01-29.
  3. ↑ Matsumoto, Ryoko; Evans, Susan E. (January 2017). "The palatal dentition of tetrapods and its functional significance". Journal of Anatomy. 230 (1): 47–65. doi:10.1111/joa.12534. ISSN   0021-8782. PMC   5192890 . PMID   27542892.

Baumel, J. J. (1993). "4. Osteologia". Handbook of Avian Anatomy: Nomina Anatomica Avium. Publications of the Nuttall Ornithological Club. Vol. 23 (2 ed.). Cambridge, Massachusetts: Nuttall Ornithological Club. LCCN   94102039. OCLC   29278198.


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