Comparing Carbon Dioxide (CO2), Temperature, and Oxygen (O2) over Geologic Time

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References:

Temperature after C.R. Scotese http://www.scotese.com/climate.htm
CO2 after R.A. Berner, 2001 (GEOCARB III)

Oxygen after R.A. Berner, 1999: Perspective Atmospheric oxygen over Phanerozoic time; PNAS Vol. 96, Issue 20, 10955-10957, September 28, 1999 abstract*