Fig. 3: Floristic diversity across time in southern Patagonia.

Within-sample Chao1 estimated richness with bootstrapped 95% confidence intervals for pre-MECO (green), MECO (dark-orange) and post-MECO (yellow) samples from southern Patagonia the composite section of the Río Turbio Formation (see references in Supplementary Fig. 1). Vertical bars denote mean Chao1 diversity within each major group of samples (or intervals) detected from the continental constrained cluster analysis. Note that, in average, the within-sample Chao1 estimator is ~40% higher during the MECO than pre-MECO and post-MECO intervals. See Table 1 for further details. Arrows at the Stage column indicate major dinocyst events from the sampled composite section of the Río Turbio Formation; (1) Lowest Common Occurrence of E. dictyostila; (2) Highest Common Occurrence of E. dictyostila; (3) Lowest Common Occurrence of T. filosa; (4) Highest Occurrence of T. filosa; (5) Highest Common Occurrence of E. dictyostila. See Supplementary Fig. 5 for further details.