Extended Data Fig. 4: Model estimates of variations in global mean temperature and surface-ocean phosphate concentrations through the Phanerozoic.
From: Carbon/phosphorus burial ratio reveals a rapid spread of land plants during the Late Ordovician
(a) global mean temperature27,83. (b) surface-ocean phosphate concentrations27,83. Curves and shadings indicate the mean and standard deviation of a discrete density distribution for each time bin. Detailed calculation methods and model parameter settings for these estimates are available in the references cited above.
