Living With the Dinosaurs

Sharks are among Earth's oldest creatures. They appeared at least 420 million years ago-that's 200 million years before the first dinosaurs! These organisms were quite different than the ferocious marine predators we know today. Readers will love learning about these aquatic animals and how scientists think they survived against vicious marine reptiles such as pliosaurs. This book's lively design, along with its high-interest topic, makes it a must-read for shark and dinosaur lovers.

Some spiders today are definitely scary. They might look hairy, have a poisonous bite, or especially long legs. But some spiders that lived during the age of the dinosaurs were really scary-and large! Yet, readers won't want to run away from the astonishing images and information in this volume about prehistoric spiders. They'll love discovering what these creatures were like and how they changed over the centuries into the creatures we know today. Important science concepts and vocabulary make this motivating volume a perfect addition to any animal library.

It's incredible to think that crocodiles were contemporaries of the dinosaurs. Not all crocs looked like the creatures we know today, though. Some were real monsters-such as Machimosaurus rex. It was 30 feet (10 m) long! Reptile lovers and dinosaur enthusiasts will love the details and images found in this high-interest book. They'll also review important science concepts, such as adaptation and extinction, and relish sharing the fascinating facts they absorb with their friends!