A dorsally concave, laterally-directed line on either side of the skull that runs along the temporal fossa, starting from above the zygomatico-frontal suture. It bounds the anterodorsal part of the temporal fossa and its the attachment site to the temporalis muscle. [ https://www.merriam-webster.com/medical/temporal%20line https://www.imaios.com/en/e-anatomy/anatomical-structure/temporal-line-1536895640 https://en.wikipedia.org/wiki/Parietal_bone ]