Specimen of Rock Consists Almost Entirely of Fossilized Cyanobacteria (IMAGE)

University of Oklahoma

Specimen of Rock Consists Almost Entirely of Fossilized Cyanobacteria

Caption

This specimen of rock consists almost entirely of fossilized cyanobacteria that once lived in an ancient shallow sea. Their proliferation decreased the amount of carbon dioxide in the atmosphere but also outcompeted other life in ancient oceans.

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University of Oklahoma

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