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When Artemis Fowl's mother contracts a life-threatening illness, his world is turned upside down. The only hope for a cure lies in the brain fluid of the silky sifaka lemur. Unfortunately, the animal is extinct due to a heartless bargain Artemis himself made as a younger boy. Though the odds are stacked against him, Artemis is not willing to give up. With the help of his fairy friends, the young genius travels back in time to save the lemur and bring...

Offers a look at how the impact of a giant asteroid changed the planet and may have caused the extinction of the massive beasts who ruled the planet for millions of years.

Each letter of the alphabet features information about a creature that no longer exists.

This dynamic series takes readers into the thrilling and frightening world of prehistoric Earth. This volume, focuses on dinosaurs of the Jurassic, is filled with lush, vivid illustrations that portray the Earth and its inhabitants at this time, accompanied by a lively and informative narrative.

A collection of poems about dinosaurs, Ice Age mammals, prehistoric people, and other ancient creatures.

Passenger pigeon hatchlings, thought to be extinct, are discovered in Grandmother's room after she departs on a voyage to Greenland.

This dynamic series takes readers into the thrilling and frightening world of prehistoric Earth. This volume, focuses on after the dinosaurs, is filled with lush, vivid illustrations that portray the Earth and its inhabitants at this time, accompanied by a lively and informative narrative.

"Meet the incredible animals that have disappeared due to competition, mass extinctions, hunting, and human activity"--

"The fascinating lives and puzzling demise of some of the largest animals on earth. Until a few thousand years ago, creatures that could have been from a sci-fi thriller--including gorilla-sized lemurs, 800-pound birds, crocodiles that weighed a ton or more--roamed the earth. These great beasts, or "megafauna," lived on every habitable continent and on many islands. With a handful of exceptions, all are now gone. What caused the disappearance of these...