Extinction : how life on Earth nearly ended 250 million years ago

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書誌事項

Extinction : how life on Earth nearly ended 250 million years ago

Douglas H. Erwin

Princeton University Press, 2008

  • : pbk

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"Fourth printing, and first paperback printing, 2008" -- T.p. verso

Includes bibliographical references (p.[275]-292) and index

内容説明・目次

内容説明

Some 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95 percent of all living species died out - a global catastrophe far greater than the dinosaurs' demise 65 million years ago. How this happened remains a mystery. But there are many competing theories. Some blame huge volcanic eruptions that covered an area as large as the continental United States; others argue for sudden changes in ocean levels and chemistry, including burps of methane gas; and still others cite the impact of an extraterrestrial object, similar to what caused the dinosaurs' extinction. "Extinction" is a paleontological mystery story. Here, the world's foremost authority on the subject provides a fascinating overview of the evidence for and against a whole host of hypotheses concerning this cataclysmic event that unfolded at the end of the Permian.After setting the scene, Erwin introduces the suite of possible perpetrators and the types of evidence paleontologists seek. He then unveils the actual evidence - moving from China, where much of the best evidence is found; to a look at extinction in the oceans; to the extraordinary fossil animals of the Karoo Desert of South Africa. Erwin reviews the evidence for each of the hypotheses before presenting his own view of what happened. Although full recovery took tens of millions of years, this most massive of mass extinctions was a powerful creative force, setting the stage for the development of the world as we know it today.

目次

Acknowledgments vii CHAPTER 1: Introduction 1 CHAPTER 2: A Cacophony of Causes 17 CHAPTER 3: South China Interlude 59 CHAPTER 4: It's a Matter of Time 77 CHAPTER 5: Filter Feeding Fails 98 CHAPTER 6: South African Eden 124 CHAPTER 7: The Perils of Permian Seas 161 CHAPTER 8: Denouement 187 CHAPTER 9: Resurrection and Recovery 218 CHAPTER 10: The Paradox of the Permo-Triassic 245 Notes 263 References 275 Index 293

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