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EARTH HISTORY

Ordovician oxygen and biodiversity

Rising oxygen levels may have facilitated the Great Ordovician Biodiversification Event according to a reconstruction of atmospheric oxygen concentrations.

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Fig. 1: The Great Ordovician Biodiversification Event.

Left and middle adapted from ref. 5, Macmillan Publishers Ltd; right adapted from ref. 2, AAAS.

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Correspondence to Alycia L. Stigall.

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Stigall, A.L. Ordovician oxygen and biodiversity. Nature Geosci 10, 887–888 (2017). https://doi.org/10.1038/s41561-017-0024-1

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