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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, …
In 1811, while exploring the cliffs near Lyme Regis, England, 12-year-old Mary Anning made the find of a lifetime. There in the rocks was the skeleton of a strange creature. Mary's …
Before Tyrannosaurus rex, there was the mighty Allosaurus. This carnivorous dinosaur ruled the Jurassic Period with its razor-sharp teeth and deadly claws. Vibrant images, colorful …
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 …
You stare at the side of a rock wall near the ocean. Suddenly, you notice a spiral outline in the rock. You found an ammonite fossil You are filled with awe as you think about how …
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 …
It's a battle between two fearsome, fanged beasts Today, the Siberian tiger holds the record as the world's biggest cat. But in prehistoric times, the saber-tooth cat held that …
How do we know about the plants and animals that lived millions of years ago? Fossils Every continent contains fossils that tell us about organisms that once existed on Earth. …