Fig 5. Chronogram for Sorex araneus group and its closely related taxa.

The chronogram is the maximum clade credibility tree obtained in Beast for the alignment of cytochrome b sequences from Sorex araneus group and its closely related taxa. Mean ages (in bold) as well as the 95% highest posterior confidence interval (in parenthesis) are shown for main nodes. The tree was compared with the benthic δ¹⁸O curve according to Lisiecki and Raymo [76] and its variance (A) as well as the rate of new lineages’ origin was calculated within overlapping periods of 400 thousand years (B). The oldest known fossils of some lineages were indicated (F)–see S3 Table for details.