Fig. 3

Ancestral State Reconstruction using maximum likelihood and the stored MK1 model (i.e., equal likelihood) implemented in Mesquite. Areas of pies indicate relative support for ancestral states. a) color vision; trichromatic color vision, indicated in black, was present at Node 2 before the evolution of b) red skin, indicated in black, and red pelage (not shown). Pie charts with asterisks indicate significant support for ancestral state reconstruction at that node. Fernandez and Morris (2007) © 2007 American Naturalist