Divergence age estimates and hypothetical evolutionary history of chamois, along the Quaternary. a) Collapsed tree with divergence age estimates resulting from BEAST analysis. The mean age estimate for each node is given in million years, with 95% credibility intervals indicated by the blue bars. The Clades mtW, mtC and mtE are represented in colours black, grey and white. b) Hypothetical evolutionary history of chamois along the Quaternary. The affiliation to Clades μsatW, μsatC and μsatE of extant populations of chamois is represented by a triangles coloured in black, grey and white.