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Squamous portion of the temporal
The squamous part is the greatest contributor to the temporal bone. Its major area is the thin flat plate that forms part of the lateral wall of the cranial cavity. It projects anteriorly as the zygomatic arch and turns inferiorly to form the mandibular fossa. Its large lateral facing plate provides attachment to the temporalis muscle.
Squamous comes from the Latin squama meaning scale, as in the scales of a fish or reptile. This term applies to thin plates of bone.