"This group of animals comprises a complex of disparate groups including the dolphin/shark-like ichthyosaurs, manatee-like placodonts, long- and short-necked plesiosaurs, the mososaur lizards, marine turtles, and crocodilians. Sea reptile paleontology is a very active field in terms of new discoveries and research, so the guide is highly topical. For example, it is becoming increasingly apparent that the long-standing assumption that prehistoric oceanic...

"Plesiosaurs lived more than 200 million years ago! What were their lives like as they swam through the world's ancient oceans? This hi/lo title explores that question through leveled text and colorful illustrations. Readers will learn about Plesiosaurs' body parts, favorite foods, behaviors, and more. Features map the prehistoric world, compare Plesiosaurs' sizes, show off favorite foods, and more. The book ends with a two-page profile that puts...