Extinction 灭绝 2.5亿年前地球上的生命是如何灭绝的 更新版 Douglas H. Erwin
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库存2件
四川成都
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作者Douglas H. Erwin With a new preface by the author
出版社Princeton University Press
ISBN9780691165653
出版时间2004-02
装帧平装
开本其他
定价188元
货号YB-66395
上书时间2024-03-07
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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 185 million years later. 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. In a new preface, Douglas Erwin assesses developments in the field since the book's initial publication. 大约2.5亿年前，地球遭受了历史上*严重的生物危机。大约 95% 的生物物种灭绝了——这是一场比 1.85 亿年后恐龙灭绝还要严重的全球性灾难。这是如何发生的仍然是个谜。但存在许多相互竞争的理论。一些人将此归咎于覆盖了美国大陆面积的巨大火山喷发。其他人则认为海平面和化学物质的突然变化，包括甲烷气体的打嗝；还有一些人引用了外星物体的影响，类似于导致恐龙灭绝的原因。灭绝是一个古生物学神秘故事。在此，世界上该主题的*重要权威对有关二叠纪末发生的灾难性事件的一系列假设的支持和反对的证据进行了令人着迷的概述。场景布置完毕后，埃尔文介绍了可能的肇事者以及古生物学家寻求的证据类型。然后，他公布了来自中国的实际证据，那里发现了许多*好的证据；观察海洋中的灭绝；南非卡鲁沙漠非凡的动物化石。埃尔文在提出自己对所发生事件的看法之前，先回顾了每个假设的证据。尽管完全恢复需要数千万年的时间，但这次*大规模的物种灭绝却具有强大的创造力，为我们今天所知的世界的发展奠定了基础。在新的序言中，道格拉斯·欧文评估了自本书首次出版以来该领域的发展。
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