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 →

How do we know so much about the animals or plants that lived millions of years ago? The answer is fossils! Fossils are prehistoric marks or remains that have been preserved in rock,… 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 →

Giant ground sloths live up to their name. These huge mammals could stand more than 11 feet tall! In this hi/lo title, young readers explore how these animals survived during the last ice… 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 →

Irish elk had the world's biggest antlers! These mammals flourished during the last ice age. In this hi/lo book, engaging text and vibrant illustrations introduce reluctant readers to the… More →

Peril may be anywhere in the animal world, especially for prey trying to avoid powerful predators. Learn about some of the mightiest mammals, attacking from the ground, ice, trees, and water. More →