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Bird-footed dinosaurs like Iguanodon were plant-eaters that could walk on two legs. Many of the dinosaurs in this group could run away from hungry predators. Others traveled in …
Raptors like Velocirpator were small, deadly dinosaurs. These carnivores and omnivores may have looked like birds, but they couldn't get off the ground. Bold images, colorful maps, …
Fossil Fuels are an important part of the Earth. Humans have come to rely on them as a source of energy. What exactly are fossil fuels? How does our dependence on them harm the …
Long-necked dinosaurs like Brachiosaurus looked down on the earth from above the treetops. These mighty plant eaters had long tails, necks, and bodies. Bold images, colorful maps, …
With its long neck and front legs, Brachiosaurus was the giraffe of the prehistoric world - a giant giraffe. Readers learn about this huge plant eater and its Jurassic home from …
The fierce and deadly sabertooth cat pounced on its prey during the Ice Age. Readers learn about this prehistoric predator from engaging, carefully leveled text and bold …
When the giant Apatosaurus walked, the ground shook. Once known as Brontosaurus, this dinosaur was one of the largest land animals on Earth. Vibrant images, accompanied by colorful …
The fierce and deadly sabertooth cat pounced on its prey during the Ice Age. Readers learn about this prehistoric predator from engaging, carefully leveled text and bold …