According to paleontologist Evan Saitta of the University of Bristol, UK, stegosaur plates may have differed between males and females. Silhouettes of male and female Stegosaurus mjosi. Image credit: Evan Saitta. Stegosaurus is a genus of armored, herbivorous dinosaurs. They lived in what is now the western United States during the Late Jurassic, approximately 150 million years ago. They were 6 – 9 meters (20 – 30 feet) long, had two staggered...
