Figure 1

Posterior majority-rule consensus trees obtained under WAG+F+Γ, for the Meta1 data set, using four different taxon configurations: ingroup includes 5 deuterostomes (grey) and 10 arthropods (green), as well as 10 nematodes (red, A and B) or 5 platyhelminths (orange, C and D). Outgroup taxa comprise 12 fungi (dark blue), alone (A and C), or together with 2 choanoflagellates and a cnidarian (light blue, B and D). Posterior probabilities are displayed only when strictly lower than 1.