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	Early Reptiles and Amphibians Early Reptiles and Amphibians Tooth Marks Mosasaurus Ichthyosaur Jaws Baby Ichthyosaur Ichthyosaur Backbones Cynognathus Thecodontian Eryops Footprints Dimetrodon Westlothiana Reptile Evolution   Previous: Back to Early Reptiles and Amphibians Book: Prehistoric Life Section: Prehistoric Chapter: Early Reptiles and Amphibians