National Geographic : 1942 Feb
i) Niationai ueograpnic society fainting by Charles _ .Knight Plate Armor of the Roofed Lizard Protected It from the Sharp Teeth of aFlesh-eating Assailant The array of thin-edged plates and horns was the only defense of the vegetarian Stegosaurus. Into this busyfeeder's tiny mouth went asteady succession of plants, cut off with its beaked jaws, to sustain a body 25 feet long. Its brain cavity was exceedingly small. The ferocious, nose-horned Ceratosaurus walked upright on its hind legs-a trait of all carnivorous dinosaurs. Small front legs were free to seize prey or fight.