Prehistoric Life Prehistoric Secrets in Stone The Earliest Fossils The Silurian Reef Trilobites Fish The Coal Forests Early Reptiles and Amphibians Sea Reptiles Flying Reptiles The Teeming Seas Hunting Dinosaurs Biggest Dinosaurs Two-Footed Plant Eaters Plated and Armoured Dinosaurs Horned Dinosaurs The Mammal Age Dawns Grassland Mammals The Ice Age	Triceratops Most horned dinosaur skeletons were very similar to those of Triceratops. Only the size and the skulls differed.   Previous: Back Book: Prehistoric Life Section: Prehistoric Chapter: Horned Dinosaurs