Bayesian tree of the clusters A-E in Fig. 4 and E. eriphyle as outgroup, constructed with StarBEAST2. Support values in brackets; blue vertical bars indicate 95% highest posterior density range; dotted red lines indicates the Pliocene-Pleistocene boundary and the Miocene-Pliocene boundary, after Gibbard and van Kolfschoten (2005) and Deutsche Stratigraphische Kommission (2016); grey zone marks the period of the Pleistocene glaciations, i.e. MIS2 – MIS16 according to Ehlers and Gibbard (2007).