Diplodocus fossils are some of the most commonly found dinosaur fossils, but scientists are still learning new things about these long-necked giants. Scientists used to think diplodocus lived in the water, but now they know these animals roamed the land and used their height to reach tall trees for food. What other mysteries have scientists unearthed in their study of this Jurassic dinosaur? Students will find out as they explore the world of diplodocus through this fact-filled volume, beautifully illustrated with full-color images.