Figure 13: Linearized tree with branch lengths estimated with the molecular clock using a mutation rate of 1% per Ma (=divergence rate of 2% per Ma). The tree topology is identical to the ML reconstruction illustrated in Figure 3 (see the specificities of the tree reconstruction in the caption of Figure 3). Boxes represent 95% confidence intervals of divergence time estimates for each node. Vertical dashed lines redirect to dates indicated on the timescale (Ma). Numbers below timescale indicate the estimated number of substitution changes using Hasegawa-Kishino-Yano model (HKY) with gamma distribution after linearizing the tree. H. furcatus is synonymized with H. baramensis.