...... |
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*