Assertion: gecko's eye | /r/HasProperty | seen on the top of the head of lizards
Facets:
value: such as the green iguana
type: OTHER
Source sentences:
text: The “third” or parietal eye seen on the top of the head of lizards (such as the green iguana) contains a lens and retina-like structure, which connects via nerves to the pineal gland in the brain.