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Widespread, persistent oxygen-poor conditions in Earth’s ancient oceans impacted early evolution of animals, say UC Riverside scientists

(January 5, 2011)

RIVERSIDE, Calif. – The conventional view of the history of the Earth is that the oceans became oxygen-rich to approximately the degree they are today in the Late Ediacaran Period (about 600 million years ago) after staying relatively oxygen-poor for the preceding four billion years. Read the full article