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	Unusual Meat Eaters Some meat-eating dinosaurs were 11.8 metres long, like Spinosaurus. However, this dinosaur was probably quite lightly built. Oviraptor was a fast-running meat eater with a strange bird-like head.   Previous: Back Book: Prehistoric Life Section: Prehistoric Chapter: Hunting Dinosaurs