Verticality of prokaryotic taxa across protein families with at least two taxonomic groups.

The list of bacterial (top) and archaeal (bottom) taxa occurring in all trees (right) and only trees that were filtered for conservation (average branch length in the tree ≤ 0.1) (left). Archaeal and bacterial phyla with less than 5 representative species in the dataset were excluded. Pmono refers the proportion of monophyletic trees. Nmono indicates the number of trees in which this taxon is monophyletic whereas Ntrees shows the number of occurrences of the phyla in the respective dataset.