Time trees of Dictyoptera estimated by MCMCTREE. Two-calibration result (middle) is regarded as the formal result of this study. Calibrated nodes are coloured, with vertical bars denoting bounds. Calibrations: Qilianiblatta namurensis (green), Valditermes brenanae (red), Piniblattella yixianensis (blue). Abbreviations: A[naplectidae], Dictyop[tera], L[amproblattidae], T[ryonicidae], Xyloph[agodea]. For detailed phylogenies showing species, see Suppl. material 11–13.