Figure 3. The maximum clade credibility chronogram from BEAST analysis.

The blue bars illustrate the extent of the 95% highest posterior density credibility intervals for each divergence time. The detailed estimated time for the deep divergences of winged insects were provided. The numbers on yellow solid circle background indicates the first appearances of the stem groups for certain clades, while the nodes with orange 95% HPD bars indicated the calibrated points. Numbers from one to eight are stand for species Delitzschala bitterfeldensis, Archaeorthoptera, Qilianiblatta namurensis, Sinonamuropteris ningxiaensis, Westphalothripides oudardi, Avioxyela gallica, Stephanastus polinae, and Westphalomerope maryvonneae respectively.