Estimated divergence times (Ma) among the major photosynthetic heterokont lineages.

aLabels correspond to those presented in Fig. 2. bRT = related taxa; Eust. = Eustigmatophyceae; Synch = Synchromophyceae; Chrys.-Synur. = Chrysophyceae-Synurophyceae; Phaeoth. = Phaeothamniophyceae; Aur. = Aurearenophyceae; Schiz. = Schizocladiophyceae; Phaeoph. = Phaeophyceae. cMean divergence times (95% credible intervals) derived from 2 replicates of 5×108 generation analyses exploring only joint-prior space (i.e. no data). See text for explanation. dMean divergence times (95% credible intervals) derived from 6 replicates of 107 generation analyses. ePosterior clade probabilities over all post-burnin trees across replicate analyses.