The parietal eye fields, farther back in the brain, are involved mainly in reflexive saccades, made in response to changes in the view.
12.
The parietal eye on top of the head assisted the animal with orientation, rather than its vision, and its presence is regarded as a primitive characteristic.
13.
Loss of tail in Hominidae, loss of limbs in snakes and some lizards, loss of gills, and loss of parietal eye seem to be valid examples.
14.
"Sauroctonus's " flattened, triangular skull was about 25 centimeters long, with a parietal eye, a primitive character, on the crown.
15.
The Msx2 gene associated with hair follicle maintenance is also linked to the closure of the parietal eye in mammals, indicating that fur and lack of pineal eye is linked.
16.
The brain of the Russian Melovatka bird, about 90 million years old, is an exception, and it shows a larger-than-expected parietal eye and pineal gland.
17.
Blue iguanas have evolved a white photosensory organ on the top of their heads called the parietal eye ( also known as the third eye, pineal eye or pineal gland ).
18.
This correlates with the physiology of the modern " living fossils, " the lampreys and the tuatara, and some other vertebrates that have a parietal eye, which, in some of them, is photosensitive.
19.
Since it recognizes differences in light, the parietal eye can also help the lizard avoid predation from birds and other aerial threats, and can awaken from deep sleep from even slight changes in light from overhead.
20.
Like other " Cyclura " iguanas, Ricord's iguanas have evolved a white photosensory organ on the top of their heads called the parietal eye, which are also called third eye, pineal eye or pineal gland.
