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.
Comment:
[taxon-note] "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"
Synonyms:
exact_synonym:
os squamosum; pars squamosa (os temporale); pars squamosa ossis temporalis; squamosal; squamosal bone; squamosum; squamous bone; temporal bone squamous part