Format:
VIII, 296 S. :
,
Ill., Kt.
ISBN:
0-691-00524-9
,
978-0-691-00524-9
Content:
"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 as responsible, 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."--BOOK JACKET.
Language:
English
Subjects:
Geography
,
Biology
Keywords:
Perm
;
Massenaussterben
;
Event
;
Historische Geologie
;
Permotrias
;
Massenaussterben
URL:
http://www.loc.gov/catdir/enhancements/fy0654/2005043376-d.html
URL:
http://www.loc.gov/catdir/enhancements/fy0654/2005043376-t.html
URL:
http://www.loc.gov/catdir/enhancements/fy0734/2005043376-b.html
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