Supplementary Information of Elevated CO2 and Global Greening during the early Miocene Tammo Reichgelt1,2, William J. D’Andrea1, Ailín del C. Valdivia-McCarthy1, Bethany R.S. Fox3, Jennifer M. Bannister4, John G. Conran5, William G. Lee6,7, Daphne E. Lee8 Correspondence to: Tammo Reichgelt (
[email protected]) • Section S1: Morphotype Identification • Figure S1: Examples of cuticles of morphotypes A–K • Figure S2: Examples of cuticles of morphotypes L–V • Table S1: Measurements of stomatal density, pore length, guard cell width, leaf and air carobn isotopic composition of fossil leaves from Foulden Maar. • Table S2: Assimilation rate range of modern living relatives. • Table S3: Intrinsic water use efficiency, conductance to water, total annual carbon gain and length of the growing season. • Table S4: Output of reconstructed atmospheric carbon dioxide, carbon assimilation rates, leaf conductance to water, and intrinsic water use efficiency of Foulden Maar fossil leaves. • References for morphotype identification. Morphotype identification 18 distinct leaf morphotypes were identified based on microscopic anatomical features. Some leaf types were assigned to previously described species from surface exposures at Foulden Maar, others were tentatively assigned genera or families. Below are the leaf fossils assigned to different morphotypes, together with defining anatomical characteristics and justification of assignment to a specific plant group. Morphotype: A. Samples: (25) 9-09-50-1, 14-02-40-5, 17-91-70-1, 17-91-70-5, 17-91-70-7, 17-91-70-8, 18-19-99-1, 31- 19-10-1, 31-19-20-3, 31-19-20-4, 32-20-30-1, 32-20-60-1, 38-97-90-10, 40-93-80-4, 41-88-12-1, 41-88- 28-4, 41-88-28-7, 42-85-0-2, 56-31-20-1, 62-19-2-1, 63-19-95-3, 83-48-86-2 (Fig.