http://www.d.umn.edu/~olse0176/Evolution/insects.html http://www.d.umn.edu/~olse0176/Evolution/insects.html http://www.d.umn.edu/~olse0176/Evolution/insects.html http://www.d.umn.edu/~olse0176/Evolution/insects.html University of Minnesota The Evolution of Arthropod Eyes