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![](https://webarchive.library.unt.edu/eot2008/20081107201205im_/http://www.nsf.gov/images/x.gif) Press Release 08-115 Species Have Come and Gone at Different Rates than Previously Believed
![](https://webarchive.library.unt.edu/eot2008/20081107201205im_/http://www.nsf.gov/images/greenlineshort.jpg)
Improved understanding of the history of biological diversity has implications for future responses to climate change
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![Photo of a slab of limestone that is covered with fossils.](https://webarchive.library.unt.edu/eot2008/20081107201205im_/http://www.nsf.gov/news/mmg/media/images/paleo1_f.jpg) |
A slab of limestone covered with fossils. This slab of limestone is about 450 million years old and is from an area in Ohio that is famous for its fossils.
Credit: Steven Holland, University of Georgia |
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![Dr. John Alroy provides new insights on the history and future of species extinctions.](https://webarchive.library.unt.edu/eot2008/20081107201205im_/http://www.nsf.gov/news/mmg/media/images/paleo_still_f.jpg) |
View video Dr. John Alroy of the National Center for Ecological Analysis and Synthesis provides new insights on the history and future of species extinctions.
Credit: Video: National Science Foundation and University of California, Santa Barbara
Images:
Dr. John Alroy, http://www.nceas.ucsb.edu/
Interstellar Extinction Event(s) and global animations from NASA, http://www.nasa.gov/
Taxonomic Composition Charts: Brian T. Huber, Curator of Planktic Foraminifera; Paleobiology Staff - Smithsonian Instiution, http://paleobiology.si.edu/
Archival images: Project Gutenberg, http://www.gutenberg.org/
Science Magazine cover: American Association for the Advancement of Science, http://www.sciencemag.org/
Studio 8 Background Monitor Images:
3D Late Cretaceous Globe, C. R. Scotese, http://www.scotese.com/
Biodiversity during Phanerozic Illustration, GNU Free Documentation License,
http://www.answers.com/topic/phanerozoic-biodiversity-png-1
Thanks to: Dennis Murphy, "The Devonian Times,", http://www.devoniantimes.org/
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![Image showing the July 4, 2008 issue of Science Magazine.](https://webarchive.library.unt.edu/eot2008/20081107201205im_/http://www.nsf.gov/news/mmg/media/images/paleo2_f.jpg) |
This story appears in the July 4, 2008 issue of Science Magazine.
Credit: Copyright 2008 AAAS. |
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