SUPPLEMENTARY APPENDIX 5. Estimates of sampled ancestors in the core analyses.

(a) Absolute numbers of sampled ancestors (SA) in the maximum-clade-credibility trees for the fossils without extant descendants. (b) Ratios of the numbers of sampled ancestors to the true numbers of sampled ancestors. Each panel 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). Within each panel, boxplot summaries are shown for the 20 FBD trees under each model of fossil occurrence probability (P = 0.01, 0.02, 0.05, and non-uniform). For each fossil occurrence probability, results are shown for three different sizes of morphological characters (l = 100, 200, 1000 from left to right, in increasingly dark shades of grey).