1001 Space Earth Nature Evolution Fossils and Prehistoric Life Dinosaurs Simple Animals Insects and Spiders Fish Amphibians Reptiles Birds Sea Mammals Land Mammals Plant Kingdom How Plants Live Unusual Plants Ecology Conservation Animal Behaviour Pets and Farm Animals History Human World Science and Technology

Choose a Page:How do alligators look after their...When did people pray to reptiles?Why do lizards shed their tails?How do you charm a snake?How can you tell the difference be...How long do reptiles live?Do reptiles cry?Can lizards fly?Do reptiles have cold blood?*When did reptiles first evolve?*Are all snakes poisonous?Can a chameleon really change its ...How big is the biggest lizard? When did reptiles first evolve? Reptiles first appeared on Earth over 300 million years ago. Some reptiles, such as crocodiles, have remained almost unchanged throughout this time. A crocodile   Previous: Back Book: 1001 Section: Nature Chapter: Reptiles