Results of the taxon-exclusion maximum-parsimony analyses (morphology + six molecular partitions). The trees are unrooted (position of possible outgroups, Brachiopoda and Mollusca, indicated). The "backbone tree" is colored, the "problematic taxa" appended in one-by-one manner are in white. Unweighted maximum parsimony; bootstrap values/Bremer support values of the "backbone tree" clades are below the branches. Black/white ellipse hashmarks indicate presence/absence of the clade in purely morphological (left) and molecular (right) "backbone taxa" (uMP), respectively.