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Press Release 11-250
Ancient Environment Led to Earth's Current Marine Biodiversity

Changes in global carbon, sulfur cycles and to sea-level fueled biological responses

Back to article | Note about images

Image of fossil snails known as turritellid gastropods.

Fossil snails known as turritellid gastropods; they're about 13 million years old.

Credit: Shanan Peters


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Image of sedimentary rocks in the Grand Canyon, Arizona.

Sedimentary rocks in the Grand Canyon, Arizona; they reflect patterns of long-ago seas.

Credit: Shanan Peters


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Image of fossil horn corals.

Horn corals about 450 million years old; they're often found in the fossil record.

Credit: Shanan Peters


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Image of rock formations in Montana.

Rocks in present-day Montana record the comings and goings of former shallow seas.

Credit: Shanan Peters


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Image of a succession of sedimentary rocks exposed in Montana.

A succession of sedimentary rocks from ancient shallow seas, exposed now in Montana.

Credit: Shanan Peters


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Cover of the November 25, 2011 issue of the journal Science

The researchers' work is described in the November 25, 2011 issue of the journal Science.

Credit: Copyright AAAS 2011


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