SUPPLEMENTARY APPENDIX 3. Details of coverage probabilities from the core analyses for estimates of (a) origin time (tor); (b) root age (tmrca); and (c) crown age (tc).

Each column of panels shows the results from a different model of among-lineage rate variation for the molecular and morphological data: strict clock and strict clock (SS); strict clock and moderate rate variation (SM); and moderate rate variation and high rate variation (MH). Each row of panels shows the results from a different model of fossil occurrence probability (P = 0.01, 0.02, 0.05, and non-uniform). Within each panel, the y-axis represents the number of cases classified by whether the 95% credibility interval width contains the true value (dark grey) or not (light grey), while the x-axis represents the three different numbers of morphological characters.