Fig. 4: The Bayesian phylogeny of horse mtDNA sequences is represented as a maximum clade credibility tree.
From: Mitochondrial genomes of Middle Pleistocene horses from the open-air site complex of Schöningen

Node heights are based on the median posterior age estimates, with grey node bars indicating the 95% HPD interval of divergence times. The list of ancient and modern sequences included in the tree is provided in Supplementary Data 6. Tip dates for present-day horses are set to zero, while those for ancient horses are based on biostratigraphic (TC21) or 14C dating, except for SCEN001, whose age was estimated (prior 500–100 ka).