Physics @ Berkeley
Physics in the News
Title: Fossil Records Show Biodiversity Comes and Goes
URL: http://www.lbl.gov/Science-Articles/Archive/Phys-fossil-biodiversity.h
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Date: 03/14/2005
Publication: Berkeley Lab news releast
Editor: Lynn Yarris
Extended Text: BERKELEY, CA -- A detailed and extensive new analysis of the fossil records of marine animals over the past 542 million years has yielded a stunning surprise. Biodiversity appears to rise and fall in mysterious cycles of 62 million years for which science has no satisfactory explanation. The analysis, performed by researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley, has withstood thorough testing so that confidence in the results is above 99-percent.