A bone which is fused with the temporal bone in many mammals and forms part of the cheek region articulating with quadrate and pterygoid in other vertebrates. [ https://github.com/obophenotype/uberon/issues/122 http://en.wikipedia.org/wiki/Squamosal_bone http://en.wikipedia.org/wiki/Squama_temporalis MP:0004423 ]
Synonyms: temporal bone squamous part squamosal bone pars squamosa ossis temporalis squamosal os squamosum pars squamosa (os temporale) squamous bone squamosum squama temporalis
Term information
- FMA:52883
- MA:0001473
- AAO:0000574
- SCTID:138672006
- Wikipedia:Squamosal_bone
- EMAPA:18021
- VHOG:0001561
pheno_slim
http://upload.wikimedia.org/wikipedia/commons/e/eb/Skull_synapsida_1.png
http://upload.wikimedia.org/wikipedia/commons/f/fd/Gray144.png
Paired, intramembranous bones that lie at the posterolateral margins of the skull. Lateral and dorsal to the quadrate.[AAO]
The squamosal bone is part of the dermatocranium in early tetrapods and becomes part of the mammalian occipital and temporal bones. [Bemis_WE, Functional_Anatomy_of_the_Vertebrates:_An_Evolutionary_Perspective, Grande_L, Third_Edition_(2001)_Orlando_Fla.:_Harcourt_College_Publishers, Walker_WF, p.246, see_Liem_KF][VHOG]
The squamosal bone, which is homologous with the squama, and forms the side of the cranium in many bony fish and tetrapods. Primitively, it is a flattened plate-like bone, but in many animals it is narrower in form, for example, where it forms the boundary between the two temporal fenestrae of diapsid reptiles