"Long ago, a once-mighty Allosaurus stalked the land searching for helpless prey for dinner, too sick to battle stronger dinosaurs. Millions of years later, scientists discovered the bones of this 'different lizard' in Wyoming and named him Big Al. Read how Big Al helped them learn more about Allosaurus and its days on Earth. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for...

Why were hundreds of Coelophysis fossils found together at a site in New Mexico? Did Coelophysis live in a herd? Was there more than one kind of Coelophysis? And why did Coelophysis die out? Explore the many mysteries that still surround this early dinosaur, hundreds of millions of years after it disappeared. The Exploring Dinosaurs and Prehistoric Creatures series is the first stepping-stone in developing a child's knowledge of prehistoric natural...

"Have you ever tried putting together a puzzle without knowing what it would look like when you had finished? If you have, you know what Othniel Charles Marsh felt like as he put together the bones and plates of a Stegosaurus he had discovered. Follow Stegosaurus from its life on Earth millions of years ago to its reconstruction in a museum--bones, plates, and all! Additional features to enhance comprehension include informative sidebars, a glossary...

"Spinosaurus was a truly unique dinosaur. But it has certainly left behind plenty of questions for scientists to answer! Students will enjoy developing their own conclusions about the life and times of this spiny lizard. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale"--Publisher description....

"Scientists who study dinosaurs often have to be good detectives. And like detectives, they sometimes come to the wrong conclusions. That's what happened when George Olson discovered the first Oviraptor fossil. Learn why Olson named the new dinosaur 'egg stealer' and how later scientists finally uncovered the truth about Oviraptor. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources...

"What can scientists learn from an ancient fossil of two dinosaurs locked in battle? Plenty! One of those dinosaurs was a Velociraptor, a 'quick thief' and predator of the Cretaceous period. Like the scientists who study Velociraptor, young readers will discover how much eighty-million-year-old bones still have to say! Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further...