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A day in the life of a plesiosaurus, an air-breathing, prehistoric, marine reptile, as she lays eggs, escapes other predators, searches for food, and fights a storm at sea.
Vertebrate evolution has led to the convergent appearance of many groups of originally terrestrial animals that now live in the sea. Among these groups are familiar mammals like whales, dolphins, and seals. There are also reptilian lineages (like plesiosaurs, ichthyosaurs, mosasaurs, thalattosaurs, and others) that have become sea creatures. Most of these marine reptiles, often wrongly called "dinosaurs", are extinct. This edited book is devoted to these extinct groups of marine reptiles. These reptilian analogs represent useful models of the myriad adaptations that permit tetrapods to live in the ocean. First book in more than 80 years devoted exclusively to fossil marine reptiles Documents the most current research on extinct marine reptiles Prepared by the world's most prominent experts in the field Well illustrated
Educational and entertaining, the Activity Book includes mazes, puzzles, word finds, games, and other skill challenges. Create your own dinosaur mini-movies, solve 15 challenging tangram puzzles, and more! Dozens of hands-on and skill-building activities are included for a variety of age levels. Learn the history of dinosaur discoveries and about the lives of these incredible creatures created on Day 5 and Day 6 of the Creation Week.