This book tells the story of the enormous Apatosaurus, who lived during the late Jurassic period between 170 and 140 million years ago. It weighed up to 33 tons (30 metric tons), was more than 65 feet (20 meters) long, yet ate only plant food. It had bony skids on the underside of its long tail to protect the soft parts.
This book tells the story of Ankylosaurus. This armored beast looked like a walking tank. It lived during the Cretaceous period between 100 and 65 million years ago and fed on plant material. At the end of its tail grew a bony club that it used to protect itself.
This book tells the story of Stegosaurus, who lived during the Jurassic period between 155 and 145 million years ago. It had large bony plates, which it probably used for temperature control, soaking up the sun, or catching a cool breeze.
This book tells the story of the Woolly Mammoth, an animal that lived during the last Ice Age. Its long outer hair and inner layer of wool helped it withstand the bitterly cold conditions. Huge curved tusks were used to dig for food under the snow and as a powerful weapon against enemies. The Woolly Mammoth weighed up to six-and-a-half tons (six metric tons) and stood ten feet (three meters) tall.
This book tells the story of the Velociraptor, a lightweight dinosaur who used its speed to catch prey. It was only three feet (one meter) tall, but was feared for its ferocious hunting ability. It used a sickle-shaped claw on the second toe of each foot as a deadly weapon and could reach speeds of up to 37 miles (60 kilometers) per hour when chasing prey.
This book tells the story of Pteranodon. During the late Cretaceous period, between 89 and 80 million years ago, one of the largest flying reptiles to exist flew in the skies. Its large wingspan and short tail made it very agile so it could turn or dive quickly. Its head could measure nearly six feet (two meters) long and on the back of its head grew a magnificent crest.
This book tells the story of Spinosaurus, a dinosaur with large jaws, sharp teeth, and a huge sail on its back that stood six feet (two meters) tall. Around 40 feet (12 meters) long, it was one of the largest meat eaters. Spinosaurus lived during the late Cretaceous period around 95 million years ago.