Fig. 2: Summary of current understanding and intervals of time for future research. | Communications Earth & Environment

Fig. 2: Summary of current understanding and intervals of time for future research.

From: Future directions for understanding the coevolution of life and oxygen

Fig. 2

A Reported intervals of high priority according to experts (n = 37). Highest reported interval of priority occurs during the mid-late Tonian 800–720 Ma (timescale overlap of 14 individual responses). B Atmospheric oxygen throughout Earth history2. C Global carbon isotope record based on a preliminary compilation72.

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