Donald K Grayson

"The Great Basin, centering on Nevada and including substantial parts of California, Oregon, and Utah, gets its name from the fact that none of its rivers or streams flow to the sea. This book synthesizes the past 25,000 years of the natural history of this vast region. It explores the extinct animals that lived in the Great Basin during the Ice Age and recounts the rise and fall of the massive Ice Age lakes that existed here. It explains why trees...

As the Ice Age came to an end, North America lost a stunning variety of animals. Mammoths, mastodon, llamas, ground-dwelling sloths the size of elephants, beavers the size of bears, pronghorn antelope the size of poodles, and carnivores to chase them--sabertooth cats, dire wolves, American lions and cheetahs; these and many more were gone by 10,000 years ago. Giant Sloths and Sabertooth Cats surveys all these animals, with a particular focus on the...