In all of these creatures, a dark facial stripe runs from the snout to the eye. Directly above the eye stripe is a bright white line called a supercilium, and above that another dark line called a lateral crown stripe. Presumably, eye stripes serve as protective coloration in all of these prey animals, disguising their eyes from predators.
Whenever such features exist in animals as diverse as birds, ungulates and rodents, it’s reasonable to speculate that they may have appeared in dinosaurs as well. This was my rationale for showing eye stripes on the Beipiaosaurus in Dinotopia: Journey to Chandara.
I used the same idea when I painted a dark patch on the flank of a Camptosaurus in the World of Dinosaurs stamps for the US Postal Service. This flank patch also appears in the springbok.
The Camptosaurus was a tasty morsel for ceratosaurs and allosaurs in the Jurassic, just as the springbok is the Chicken McNugget of the Kalahari.
Tomorrow: Mahl Stick