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 are fossils formed?Why did ancient elephants have fur?What were the first land animals?What were the first animals like?How many fossils are there?What were the first forests like?What is an ammonite?What is a petrified forest?*Which animals replaced the dinosaurs?*Why would you burn a fossil?What types of fossil are there?Are fossils still being made today?How old are the oldest-known fossils? Which animals replaced the dinosaurs? After the last of the dinosaurs died out, 60 million years ago, and before humans evolved a million years ago, the Earth was ruled by mammals and birds. Some of these reached extraordinary sizes. There were giant, hornless rhinoceroses with long, giraffe-like necks; and 2 metres high flightless, meat-eating birds, such as Diatryma, with its ripping beak. Diatryma, a giant meat-eating bird from ancient America   Previous: Back Book: 1001 Section: Nature Chapter: Fossils and Prehistoric Life