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Phylogenetic tree of 17 Hystricomorpha species along with the mouse. The calibrated phylogenetic tree of Hystricomorpha with M. musculus as an outgroup was generated through Bayesian analysis in BEAST using a data set comprising 2,520 genes. Geological periods are depicted at the top. Each node displays the estimated divergence time (in MYA), with a bar representing the 95% credibility intervals for the respective node.
