This book tells the story of Tylosaurus, which swam in the prehistoric seas between 87 and 82 million years ago. It was a fierce marine reptile that used its sharp teeth and huge jaws to feed More →

Amazing illustrations of dinosaurs help give children the basic facts of these giant reptiles - body parts, how they moved, and what they ate. Young readers are also introduced to the science More →

Each book in this fascinating series is filled with facts about these mighty creatures from long ago. Find out where they lived, how big they were, what they ate, and how they compared to… More →