The phylogeny based on the combined RPB1 and RPB2 protein sequences. This phylogeny is obtained by Bayesian inference. Bayesian posterior probabilities (% are noted above individual branches and bootstrap values below the branches. The chart on the right side of the phylogeny depicts the %G+C of coding sequences of RPB1 and RPB2 with error bars for each taxon. The unique gains and losses of certain characters are mapped on the phylogeny.