The Beginning of the Age of Mammals

The Beginning of the Age of Mammals PDF Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801884726
Category : Business & Economics
Languages : en
Pages : 468

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The Beginning of the Age of Mammals

The Beginning of the Age of Mammals PDF Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801884726
Category : Business & Economics
Languages : en
Pages : 468

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Mammals from the Age of Dinosaurs

Mammals from the Age of Dinosaurs PDF Author: Zofia Kielan-Jaworowska
Publisher: Columbia University Press
ISBN: 0231119186
Category : Science
Languages : en
Pages : 649

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Book Description
Few aspects of American military history have been as vigorously debated as Harry Truman's decision to use atomic bombs against Japan. In this carefully crafted volume, Michael Kort describes the wartime circumstances and thinking that form the context for the decision to use these weapons, surveys the major debates related to that decision, and provides a comprehensive collection of key primary source documents that illuminate the behavior of the United States and Japan during the closing days of World War II. Kort opens with a summary of the debate over Hiroshima as it has evolved since 1945. He then provides a historical overview of thye events in question, beginning with the decision and program to build the atomic bomb. Detailing the sequence of events leading to Japan's surrender, he revisits the decisive battles of the Pacific War and the motivations of American and Japanese leaders. Finally, Kort examines ten key issues in the discussion of Hiroshima and guides readers to relevant primary source documents, scholarly books, and articles.

After the Dinosaurs

After the Dinosaurs PDF Author: Donald R. Prothero
Publisher: Indiana University Press
ISBN: 0253000556
Category : Science
Languages : en
Pages : 393

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A fascinating study of the thousands of new animal species that walked in the footsteps of the dinosaurs—and the climate changes that brought them forth. The fascinating group of animals called dinosaurs became extinct some 65 million years ago (except for their feathered descendants). In their place evolved an enormous variety of land creatures, especially mammals, which in their way were every bit as remarkable as their Mesozoic cousins. The Age of Mammals, the Cenozoic Era, has never had its Jurassic Park, but it was an amazing time in earth’s history, populated by a wonderful assortment of bizarre animals. The rapid evolution of thousands of species of mammals brought forth many incredible creatures―including our own ancestors. Their story is part of a larger story of new life emerging from the greenhouse conditions of the Mesozoic, warming up dramatically about 55 million years ago, and then cooling rapidly so that 33 million years ago the glacial ice returned. The earth’s vegetation went through equally dramatic changes, from tropical jungles in Montana and forests at the poles. Life in the sea underwent striking evolution reflecting global climate change, including the emergence of such creatures as giant sharks, seals, sea lions, dolphins, and whales. Engaging and insightful, After the Dinosaurs is a book for everyone who has an abiding fascination with the remarkable life of the past.

Giants from the Past

Giants from the Past PDF Author:
Publisher:
ISBN: 9780870444296
Category : Animals, Fossil
Languages : en
Pages : 104

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A description of the first animals, like the mastodon, & how they evolved during the Ice Age.

Dawn of the Age of Mammals in the Northern Part of the Rocky Mountain Interior, North America

Dawn of the Age of Mammals in the Northern Part of the Rocky Mountain Interior, North America PDF Author: Thomas M. Bown
Publisher: Geological Society of America
ISBN: 0813722438
Category : Science
Languages : en
Pages : 253

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Beasts Before Us

Beasts Before Us PDF Author: Elsa Panciroli
Publisher: Bloomsbury Publishing
ISBN: 1472983971
Category : Science
Languages : en
Pages : 321

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For most of us, the story of mammal evolution starts after the asteroid impact that killed the dinosaurs, but over the last 20 years scientists have uncovered new fossils and used new technologies that have upended this story. In Beasts Before Us, palaeontologist Elsa Panciroli charts the emergence of the mammal lineage, Synapsida, beginning at their murky split from the reptiles in the Carboniferous period, over three-hundred million years ago. They made the world theirs long before the rise of dinosaurs. Travelling forward into the Permian and then Triassic periods, we learn how our ancient mammal ancestors evolved from large hairy beasts with accelerating metabolisms to exploit miniaturisation, which was key to unlocking the traits that define mammals as we now know them. Elsa criss-crosses the globe to explore the sites where discoveries are being made and meet the people who make them. In Scotland, she traverses the desert dunes of prehistoric Moray, where quarry workers unearthed the footprints of Permian creatures from before the time of dinosaurs. In South Africa, she introduces us to animals, once called 'mammal-like reptiles', that gave scientists the first hints that our furry kin evolved from a lineage of egg-laying burrowers. In China, new, complete fossilised skeletons reveal mammals that were gliders, shovel-pawed Jurassic moles, and flat-tailed swimmers. This book radically reframes the narrative of our mammalian ancestors and provides a counterpoint to the stereotypes of mighty dinosaur overlords and cowering little mammals. It turns out the earliest mammals weren't just precursors, they were pioneers.

In Pursuit of Early Mammals

In Pursuit of Early Mammals PDF Author: Zofia Kielan-Jaworowska
Publisher: Indiana University Press
ISBN: 0253008247
Category : Science
Languages : en
Pages : 282

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Book Description
“Mesozoic mammal fossils are the focus of this fascinating book, which reviews both the fossils themselves and the history of their discovery.” —Choice In Pursuit of Early Mammals presents the history of the mammals that lived during the Mesozoic era, the time when dinosaurs ruled the Earth, and describes their origins, anatomy, systematics, paleobiology, and distribution. It also tells the story of the author, a world-renowned specialist on these animals, and the other prominent paleontologists who have studied them. Zofia Kielan-Jaworowska was the first woman to lead large-scale paleontological expeditions, including eight to the Gobi Desert in Mongolia, which brought back important collections of dinosaur, early mammal, and other fossils. She shares the difficulties and pleasures encountered in finding rare fossils and describes the changing views on early mammals made possible by these discoveries. “A thorough review of the current state of early mammalian paleontology presented through the unique historical filter of someone who was at the foremost of the field for over half a century.” —The Quarterly Review of Biology “Whether she’s talking about how mammals evolved their distinctive ear bones, or how she built a cabin out of plywood during a particularly cold field season in the Gobi, you know that a remarkable, passionate person is telling a story of science and adventure in her own words.” —Priscum “A fascinating window into the development of the field . . . The perspective of an individual at the center of these developments is captivating, informative, and has never before been published.” —Gregory P. Wilson, University of Washington

The Ice Age

The Ice Age PDF Author: Dougal Dixon
Publisher: Barrons Juveniles
ISBN: 9780764134791
Category : Juvenile Nonfiction
Languages : en
Pages : 32

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Book Description
Describes twelve animals of the Quaternary period, including Mammuthus, Thylacolea, and Dinornis, with information on where they lived, when they lived, their length, special features, food, and enemies.

Extinction and Radiation

Extinction and Radiation PDF Author: J. David Archibald
Publisher: JHU Press
ISBN: 0801898056
Category : Nature
Languages : en
Pages : 121

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Book Description
This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.

The Age of Mammals in Europe, Asia and North America

The Age of Mammals in Europe, Asia and North America PDF Author: Henry Fairfield Osborn
Publisher:
ISBN:
Category : Fossils
Languages : en
Pages : 680

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