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Paleontologist James Valentine dies at 96

Paleontologist James Valentine dies at 96
miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.

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James Valentine, paleontologist who grappled with the origin of animal diversity, has died at 96

James Valentine, paleontologist who grappled with the origin of animal diversity, has died at 96
berkeley.edu - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from berkeley.edu Daily Mail and Mail on Sunday newspapers.

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9 Ghostly Planets

This Encyclopedia Britannica Science list describes 9 planets that were once thought to exist. ....

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Rise of marine predators reshaped ocean life as dramatically as sudden mass extinctions

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IMAGE: A seminal 1981 study organized the a history of ocean life into three hierarchies, with certain animals reigning the seas during each time periods. Two mass extinctions cleared the way.
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Credit: Jeff Gage/Florida Museum of Natural History
GAINESVILLE, Fla. - Evolutionary arms races between marine animals overhauled ocean ecosystems on scales similar to the mass extinctions triggered by global disasters, a new study shows.
Scientists at Umeå University in Sweden and the Florida Museum of Natural History used paleontological databases to build a multilayered computer model of the history of marine life over the last 500 million years. Their analysis of the fossil record closely echoed a seminal 1981 study by paleontologist J. John Sepkoski - with one key difference. ....

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