Millions of years ago, Quetzalcoatlus was once the biggest flying creature on Earth. With a wingspan the size of a small plane and a neck as tall as a giraffe, this flying reptile once soared More →

With a short bill to scoop up food, the bird-like Gallimimus once sprinted across the land on two legs. At top speeds, it was too quick for carnivores to catch. Now, this light and fast… More →

Millions of years ago, Giganotosaurus was an eating machine. With ridged teeth and sharp claws, it once hunted herbivores even bigger than itself in swampy lands. Now, this big and fast… More →

With strong flippers and shark-like teeth, Mosasaurus once ruled the oceans. This sea reptile used to swim all over the world. Now, it captures the interest of… Take struggling and rel More →

Millions of years ago, Quetzalcoatlus was once the biggest flying creature on Earth. With a wingspan the size of a small plane and a neck as tall as a giraffe, this flying reptile once soared More →

Millions of years ago, Spinosaurus was one of the largest dinosaurs around. With a distinctive large sail and crocodile-like snout, it once prowled the deep waterways for large fish and… More →

Spinosaurus was a dinosaur with a large sail on its back. This book explains what scientists know about this dinosaur and its behavior. Easy-to-read text, vivid images, and helpful back… More →

Stegosaurus was a slow-moving dinosaur with plates along its back. This book explains what scientists know about this dinosaur and its behavior. Easy-to-read text, vivid images, and helpful… More →

Triceratops was a dinosaur with three horns on its head. This book explains what scientists know about this dinosaur and its behavior. Easy-to-read text, vivid images, and helpful back matter More →