Fig. 3 in Molecular data suggests the ciliate Mesodinium (Protista: Ciliophora) might represent an undescribed taxon at class level

Fig. 3. The comprehensive phylogenetic tree inferred from SSU rRNA gene sequences using Maximum Likelihood analysis with the model selected by AIC in MRMODELTEST for Bayesian analysis. Numbers at the nodes represent the bootstrap percentages from 1 000 replicates for ML analysis. Asterisks indicate bootstrap values less than 50% at a given node. Evolutionary distance is represented by the branch length separating the species in the figure. The scale bar corresponds to ten substitutions per 100 nucleotide positions.