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	Secrets in Stone Secrets in Stone Trace Fossil Cast Mold Petrified Wood Carbonization Original Bones Insects in Amber   Previous: Back to Secrets in Stone Book: Prehistoric Life Section: Prehistoric Chapter: Secrets in Stone