Supercroc And The Origin Of Crocodiles

Discusses prehistoric crocodiles, including the discovery of SuperCroc in the Sahara Desert, and the lifestyles, habitats, and conservation of modern crocodiles.

The amazing fossils of prehistoric crocodiles tell us something about their lives.

Follow Paul Sereno's 1997 excavation in the desert, revealing facts about this giant prehistoric croc that lived and fought among the dinosaurs.

Toward the end of the Age of Dinosaurs, during a time known as the Late Cretaceous, a new type of giant predator appeared along the southern coasts of North America. It was a huge species of crocodylian called Deinosuchus. Neither a crocodile nor an alligator, it was an ancestor of both modern groups; it reached weights of many tons and it had some features unique to its own species. Average-sized individuals were bigger than the carnivorous dinosaurs with which they co-existed; the largest specimens were the size of a T-rex. King of the Crocodylians, the biography of these giant beasts, tells the long history of their discovery and reports on new research about their makeup. The book also deals with the ancient life and geology of the coastal areas where Deinosuchus thrived, its competitors, and its prey, which probably included carnivorous dinosaurs. There is also detailed discussion of the methods used to determine the size of these giant animals, the dating of the fossils, the nature of their living environments, and how we know who ate whom 80 million years ago.

110 million years ago, a lush river flowed through the heart of what is now a desert in Africa. Lurking in the depths of the river, a humungous monster waited for its prey to come to the river’s edge to drink...and to die. More than 40 feet long, this giant ancestor of the crocodile stalked and killed dinosaurs. In 1997, dinosaur hunter Paul Sereno discovered the enormous reptile fossil named SuperCroc. Learn how modern science uncovers the ancient past in this thrilling account of a prehistoric predator.

All of the animals are afraid of the Selfish Crocodile - he never let's them into his river, and he's always so snappy! And so when the Selfish Crocodile finds himself in terrible pain, no-one wants to help him - after all, what if he gobbles them up? But, to everyone's surprise, there is one animal in the forest who is willing to help . . . A brilliant tale of friendship, The Selfish Crocodile has become a picture book classic.

An on-location lesson in museums and dinosaur digs shows how paleontologists perform their fascinating unearthing of the past. National Geographic supports K-12 educators with ELA Common Core Resources. Visit www.natgeoed.org/commoncore for more information.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!! When Jack and Annie got back from their adventure in Magic Tree House Merlin Mission #17: A Crazy Day with Cobras, they had lots of questions. Can snakes really be charmed? What reptile has the deadliest venom? What do Komodo dragons eat? How do you tell alligators and crocodiles apart? Find out the answers to these questions and more as Jack and Annie track the facts. Filled with up-to-date information, photos, illustrations, and fun tidbits from Jack and Annie, the Magic Tree House Fact Trackers are the perfect way for kids to find out more about the topics they discovered in their favorite Magic Tree House adventures. And teachers can use Fact Trackers alongside their Magic Tree House fiction companions to meet common core text pairing needs. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!

What caused their extinction remains a mystery, and one that makes an intriguing conclusion to this portrait of a true dragon of the past.