An introduction to prehistoric animals of the air and sea for beginning readers.

Describes the physical characteristics and predatory behavior of the ancient reptile which became extinct sixty-five million years ago.

"Engaging images accompany information about plesiosaurs. The combination of high-interest subject matter and light text is intended for students in grades 2 through 7"--

"Great White Sharks are gigantic - but what else used to swim in the oceans that might be bigger? Readers will discover fascinating creatures and compare their incredible sizes to modern day settings."--

"Dinosaurs roamed Earth between 230 million and 65 million years ago. That's not only long before the present day, but also long before Homo sapiens were around at all! Without fossils, we might not know anything about these fierce and interesting prehistoric animals. In this volume, readers learn how fossils form, the different kinds of dinosaur fossils scientists study, and just what we've learned from these cool fossil finds. Up-close photographs...

Provides information about enormous reptiles who swam the seas during the dinosaur age.

Takes a look at the prehistoric reptiles that lived in the Earth's oceans during the Mesozoic era (about 250 to 65 million years ago).

"This stunning book from Merriam-Webster introduces hundreds of words you will need to talk like a dinosaur expert! Travel back in time millions of years and discover how these amazing creatures lived, ate, fought, raised their young--and find out how paleontologists use the clues in fossils to make new breakthroughs." -- Back cover. "This ... book from Merriam-Webster introduces hundreds of words [one] will need to talk like a dinosaur expert!"--...