Figure 5 in Molecular phylogeny and evolution of the Perissodactyla

Figure 5. Mapping of chromosome rearrangements on the Bayesian tree (-ln L = -26549.49) of perissodactyl species included in the Trifonov et al. (2008) survey. Open circles represent chromosome fusions, grey circles fissions, open squares inversions, and dotted symbols ambiguous characters. Rates of chromosome evolution are shown for terminal and internal branches (small grey boxes). For some nodes, chromosome number ancestral states are indicated in open boxes. R/Myr, rate of chromosome rearrangements per million years.