Comment on “Was atmospheric CO2 capped at 1000 ppm over the past 300 million years?” by McElwain J. C. et al. [Palaeogeogr. Palaeoclimatol. Palaeoecol. 441 (2016) 653-658]
Keywords: Palaeoatmosphere; Phanerozoic; Atmospheric CO2; CO2 model; Fossils;