Nucleotide composition, proportion of invariant sites (Pinv), transition vs transversion rate (Ts/Tv), average distance between sequences (DS), and average distance between clades calculated based on GTR+I+G evolution model.

R = “Robust” scleractinian clade. C = “Complex” scleractinian clade. B = “Basal” scleractinian clade. S = Scleractinia clade (robust + complex + basal). Co = Corallimorpharia clade. A = All alignment (including Octocorallia, Antipatharia, Zoanthidea, Actiniaria, Corallimorpharia, Scleractinia).