Parietal bone
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The parietal bones are two bones in the skull which, when joined at a fibrous joint known as a cranial suture, form the sides and roof of the neurocranium. In humans, each bone is roughly quadrilatera
Skull seen from top. Sagittal suture separates left and right parietal bone.
Parietal bone
Trajectory of the missile through President Kennedy's skull. The bullet struck posterior part of his right parietal bone from behind.
Parietal eye
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A parietal eye is a part of the epithalamus in some vertebrates. The eye is at the top of the head, is photoreceptive, and is associated with the pineal gland, which regulates circadian rhythmicity an
Parietal bone
…foramen (also called the pineal foramen), is present between the two parietal bones at the midline of the skull. This opening is the location of the parietal eye (also called the pineal or third eye), which is much smaller than the two main eyes. The parietal bone is usually present in the posterior end of the…
The parietal eye (very small grey oval between the regular eyes) of a juvenile bullfrog (Lithobates catesbeianus)
Adult green anole (Anolis carolinensis) clearly showing the parietal eye (small grey/clear oval) at the top of its head
Parietal eye of the Merrem's Madagascar swift (Oplurus cyclurus) is surrounded by a black-and-white spot on the skin, giving it the "three-eyed" appearance.
Parietal eye of a regal horned lizard (Phrynosoma solare)