Figure 6. Bayesian phylogeny of the 16 S rRNA clones of calcibacteria from Cliona viridis and Hemimycale columella, and their closest sequences from the SILVA database.

Sequence sources are included. The calcibacteria clade is shown within the dashed frame. Posterior probability values are indicated at each node. Bullets on the right indicate presence of ca. 1 μm calcareous spherules (the presence of spherules in cnidarians has not been explored). Seven calcibacteria OTU’s at >98.5% similarity (stars), are identified.