Fig. 3

Zygophyllaceae divergences through time, according to geographic areas. Plots summarize the results of BEAST analyses of, and ancestral area reconstructions across, 101 posterior trees (see Materials and Methods). For each 5-million-year interval, the interquartile range (dark colors) and the complete span (light colors) of observed divergences are provided. The depiction of sea-surface temperature changes is modified from Zachos et al. [16]. Abbreviations: Cre. = Cretaceous; Pal. = Paleocene; Oli. = Oligocene; P. = Pliocene. Our results indicate that the initiation of diversification of Zygophyllaceae in different regions (light-grey shade) occurred after the MMCO (dashed line)