Ichthyosaurs

Neither fish nor lizards, ichthyosaurs swam ancient seas for nearly 150 million years. This title reveals how more than 80 species of these dolphin-like reptiles commanded Earth's prehistoric waters at the same time dinosaurs walked on land. The Exploring Dinosaurs and Prehistoric Creatures series is the first stepping-stone in developing a child's knowledge of prehistoric natural history. By learning about the incredible creatures of the past, readers begin to understand modern-day animals as well as the delicate balance of the world's environments. From the habitats of prehistory to the fossil hunters of the early twentieth century and the revolutionary discoveries of today, these books present a wealth of information about dinosaurs and other prehistoric creatures, how they were discovered, and the mysteries of their ancient worlds.