Evolution of multiple retinal rod pigmentation. Ryan Adams Psychology 159. Origins of color vision. Evolved 700 million years ago Australian lungfish (Neoceratodus forster) Southern hemisphere lamprey (Geotria australis) Chondrichthyes (sharks and rays)
Three of five photo pigments
Yellow/orange has major effects
on the green wavelength receptors.
Shallow water. Ability to see colors allows for greater exploitation of the surrounding environment.
The origins of color vision in vertebrates. Clin Exp Optom 2004; 87:4-5:217-223.
More than three different cone pigments among people with normal color vision. Neitz J, Neitz M, Jacobs GH. Department of Cellular Biology and Anatomy, Medical College of Wisconsin, Milwaukee 53226.