Results of the Bayesian divergence time analysis that includes Ateles marginatus and incorporated Stirtoni as a fossil constraint (Analysis 1). The figure shows the consensus topology (equivalent to that shown in Fig. 3A) and the estimated ages, in millions of years (plus 95% highest posterior density confidence interval, in blue), of each clade. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)