Parasphenoid: Difference between revisions
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{{short description|Bone in the cranium of some vertebrates}} |
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{{unreferenced|date=January 2013}} |
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The '''parasphenoid''' is a bone which can be found in the [[cranium]] of |
The '''parasphenoid''' is a bone which can be found in the [[cranium]] of many [[vertebrates]]. It is an unpaired [[dermal bone]] which lies at the midline of the roof of the mouth. In many reptiles (including birds), it fuses to the [[Endochondral ossification|endochondral]] (cartilage-derived) basisphenoid bone of the lower braincase, forming a bone known as the parabasisphenoid. Early mammals have a small parasphenoid, but for the most part its function has been replaced by the [[vomer]] bone. The parasphenoid has been lost in [[Placentalia|placental]] mammals and [[caecilian]] amphibians.<ref>{{Cite journal|last=Atkins|first=Jade B.|last2=Franz-Odendaal|first2=Tamara A.|date=2016-04-01|title=The evolutionary and morphological history of the parasphenoid bone in vertebrates|journal=Acta Zoologica|language=en|volume=97|issue=2|pages=255–263|doi=10.1111/azo.12131|issn=1463-6395}}</ref> |
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== See also == |
== See also == |
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*[[Ossification of frontal bone]] |
*[[Ossification of frontal bone]] |
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*[[Terms for anatomical location]] |
*[[Terms for anatomical location]] |
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{{Cranium}} |
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== References == |
== References == |
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<references /> |
<references /> |
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{{Cranium}}{{Tetrapod osteology}} |
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[[Category:Bones of the head and neck]] |
[[Category:Bones of the head and neck]] |
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Latest revision as of 05:36, 8 March 2024
The parasphenoid is a bone which can be found in the cranium of many vertebrates. It is an unpaired dermal bone which lies at the midline of the roof of the mouth. In many reptiles (including birds), it fuses to the endochondral (cartilage-derived) basisphenoid bone of the lower braincase, forming a bone known as the parabasisphenoid. Early mammals have a small parasphenoid, but for the most part its function has been replaced by the vomer bone. The parasphenoid has been lost in placental mammals and caecilian amphibians.[1]
See also
[edit]References
[edit]- ^ Atkins, Jade B.; Franz-Odendaal, Tamara A. (2016-04-01). "The evolutionary and morphological history of the parasphenoid bone in vertebrates". Acta Zoologica. 97 (2): 255–263. doi:10.1111/azo.12131. ISSN 1463-6395.
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