Product Description

Some 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95% 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.

Product Details

• Amazon Sales Rank: #226056 in Books
• Published on: 2008-05-01
• Original language: English
• Number of items: 1
• Binding: Paperback
• 320 pages

Review
Theories and mysteries can be dispelled with good data from the geologic record, and Erwin (a paleobiologist at the Smithsonian Institution's National Museum of Natural History) offers an authoritative account of the search for these data and for the cause of the extinction. . . . Extinction provides a great reference for researchers and the interested lay reader alike.
(Andrew M. Bush Science )

Extinction is a very enjoyable read. . . . It provides a thoroughly up-to-date account of the causes of the end-Permian event and the developments in the field since 1993 as seen through the eyes of one of the key players. . . . Extinction leaves the reader with the (accurate) picture that here is a scientist whose work has significantly advanced our understanding of the greatest extinction event known to science. . . . [A] readable and scholarly account.
(Richard J. Twitchett American Scientist )

Douglas Erwin's geological mystery story is engrossing. It contains a tribute to the scientific method--and also the collaborations of research. The book ends with Erwin warning that the Earth is arguably entering another mass extinction period, this time unnatural and man-made. And this time the destruction may well be total.
(Lucy Sussex The Age )

Douglas Erwin describes how life on Earth was nearly destroyed at the end of the Permian period, 250 million years ago. . . . The author . . . explain[s] what this paleontological, as well as geological, evidence can tell scientists about the dramatic and deadly shift in the Earth's environment.
(Science News )

Douglas H. Erwin, a Smithsonian paleobiologist and one of the leading experts on the Permian extinction has meticulously sifted through the evidence. . . . His accessible new book, Extinction--written, it seems, both to persuade his colleagues and to educate a lay audience--is told from the perspective of a forensic scientist trying to piece together a quarter-billion-year-old crime scene.
(Joshua Foer Washington Post Book World )

No one can tell this story better than Douglas Erwin. His book is a superbly written account of what we know about the Permian extinctions. . . . More than a geological story, this book is an excellent model of how science addresses complicated questions.
(Choice )

This book does not justify a single, accepted causal sequence of events . . . to account for the end-Permian extinction. Instead, Erwin dissects the evidence for and against each hypothesis, impartially weighing their strengths and weaknesses. Although this book may frustrate readers expecting to learn how life nearly ended 250 million years ago, it will reward them with a fascinating case study in scientific inference, a case that remains very much open.
(John P. Hunter Quarterly Review of Biology )

Erwin offers a thorough overview of one of the most interesting problems in earth history. . . . Erwin takes the readers on an insider's journey that includes adventures in the field, tedious hours in the laboratory, and stimulating but sometimes contentious exchanges among colleagues at scientific meetings. He gives rigorous consideration to every reasonable hypothesis. . . . Erwin's short course is a professional service for geologists (like me) who have read only some of the primary literature on the end-Permian extinction.
(Stephen O. Moshier Books & Culture )

Erwin's book is science writing for the general public at its best and most lucid. Entertaining, informative, and thought provoking.
(Northeastern Naturalist )

For scientists as well as general educated readers, this book enlightens its readers to the complexity of the largest biological crisis the earth has yet seen.
(H.J.M. Meijer PalArch's Journal of Vertebrate Paleontology )

Review
Douglas Erwin blends careful scholarship and graceful prose in this authoritative elucidation of Earth's greatest mass extinction. Although framed in terms of hypotheses and their tests, Erwin's story unfolds as a gripping who-done-it for the ages.
(Andrew H. Knoll, Harvard University, author of "Life on a Young Planet" )

From the Back Cover

"Douglas Erwin blends careful scholarship and graceful prose in this authoritative elucidation of Earth's greatest mass extinction. Although framed in terms of hypotheses and their tests, Erwin's story unfolds as a gripping who-done-it for the ages."--Andrew H. Knoll, Harvard University, author of Life on a Young Planet

"Douglas Erwin is the world's leading expert on the end-Permian extinction. This book will be the standard reference on this crucial event in the history of life. It is a wonderful example of science in action."--Richard Bambach, Virginia Tech

"This book provides an up-to-date review and critical appraisal of all we know about the end-Permian mass extinction, a subject that has drawn much popular attention. Complementing its solid scholarship, its friendly style enables educated general readers to get to grips with all the current debates."--Paul Wignall, University of Leeds, author of Mass Extinctions and Their Aftermaths

"In conversational prose, Douglas Erwin provides a useful roadmap to a complex scientific subject--an up-to-date treatment of the end-Permian extinction."--Michael J. Foote, University of Chicago

Customer Reviews

Interesting but heavily technical and not very well structured
I was somewhat disappointed by the book. And not because of the subject which could not be more interesting: What happened at the end of the Permian (c.250 million years ago) and over 95% of all living organisms became extinct? The problem nags paleontologists for decades and no thoroughly satisfying scientific explanation is in view.
So, why the disappointment? Firstly, I was expecting a more biological approach instead of the physics/chemistry/geology one I got. I understand of course that a problem of this magnitude covers, by default, multiple scientific disciplines, but that did little to alleviate the difficulty I had, navigating many of the book's passages. And I stayed positively starved from the point of biology. Only one or two of the period's various complex ecosystems and food webs are described in some detail. There are additional biological glimpses, in various chapters, lost in a sea of Geology and Climate data, but I was expecting much more in that line.
Secondly we have a problem of structuring. The author in the first chapters presents, in summary, the various proposed theories about the whys and how's of this tremendous extinction (extensive volcanism, giant meteor(s), oceanic anoxia etc.) but then fails to develop each theory in detail in a consistent manner e.g. one per chapter. Of course he touches them within the book but again I did not manage to get a good grasp of the pros and cons of each scientific proposal. The final chapters try to summarize things and present the author's personal pet theory, but the whole point is somewhat muddled.
The text is well written, the subject is definitely hot, the data are mostly there but you have a rough time structuring them in order to gain a measure of systematic knowledge. And the biological data poverty does not help a bit.

Resetting the clock
Any scientist who opens [and closes!] a book by saying "We [I] don't know!" is worthy of your attention and respect. Too many others have taken up a theme and defended against all comers. Erwin's examination of the catastrophic close of the Permian Age is complete, admirably researched and exquisitely written. Within its pages, this work examines the various ideas on the massive loss of life 250 million years ago. These days, not to have heard of an meteor's killing off the dinosaurs 65 million years ago suggests you've lived hidden in a cave for a generation. Erwin opens with a brief overview of that event, reminding us that extinctions, particularly "impact events", have loomed large in discussions of the history of life ever since Walter and Luis Alvarez proposed the idea.

It's easy to rattle off the numbers: when the dinosaurs "went West", perhaps 75% of life was also extinguished. When the Permian ended, over 95% of living things disappeared. Erwin asks: "How do we know this? What life forms disappeared? Did they all go at the same time? How long did it take to recover?" Most important, of course, "What killed them off?" Instead of dull statistics, Erwin asks the important questions. Acknowledging that "Triassic rocks are boring", he explains why this is so. Fossils are scarce is the obvious answer, but why they are missing is his quest. With most of his attention focussed on ocean life, he details what causes shifts in benthic populations. The seas rise and fall - for a variety of reasons. Glaciation takes up sea water and leaves continental shelves high and dry. Oceans need to "turn over" an oxygen supply. What is the result of that failing? Carbon, with its various isotopes, passes through life selectively. Tracing that path provides insights into where it's been - and where not. When did the Siberian "traps" form? How much lava spewed from that rift, and what other products did it bring along or destroy? Finally, is there evidence that Earth was pelted by another bolide to provide an easy answer to all those questions? That reply is almost surely negative.

Erwin would like to couch this narrative as a detective story, but it doesn't really work. There are too many victims - unless you count life as one entity. There is also a phalanx of detectives all trying assiduously to solve the case. If you thought there were too many cooks spoiling the broth, wait until you meet this mob. Nearly all of them have an agenda and they have a disturbing tendency to trumpet a single tune. Erwin should have portrayed them as an orchestra, with himself as conductor. Van Kariajan would go emerald with envy. Each investigator supplies a theme, striving for a solo performance. Erwin cautiously assesses the tune, fits it nicely into a grander theme and produces a symphony instead of a cacophony. It's quite a performance. To keep himself from the sin of hubris, he points out his own flaws in a previous effort. The strain wasn't discordant, but the composition needed refinement.

Erwin fastidiously acknowledges his contributors. Jack Sepkowski comes in for deserved accolades, as do Bruce Rubridge, Yugan Jin and many others. Their methods, results and further work - including that incomplete but "promised" - are given a full hearing. Even those whose suggestions are highly suspicious, such as Luann Becker's Bedout "crater" are given a respectful hearing. Nobody's work is chastised or rejected. "We need more investigation" is the running theme of Erwin's account. The reason the ongoing search is important lies in understanding what is happening around us today. Are we, in Dave Sepkowski's words a "Dead Clade Walking"? Or can we glean enough information from the rocks to find the means to succeed through the extinction we seem to be part of - and likely creating? The "95%" means life had to restart the clock after the Permian. There were a few "Lazarus species" that re-emerged after the cataclysm. Will the human species manage to revive itself when so much life around us has been decimated? No more pertinent question confronts us. [stephen a. haines - Ottawa, Canada]