Fig. 4

Bayesian inference analyses indicate that the Dicyemida have a closer affinity to the Orthonectida, and that the Mesozoa diverged early as a sister group to the Rouphozoa. Bayesian inference analysis was performed on three datasets, and each dataset ran three independent trains under the CAT + GTR model using PhyloBayes-MPI. Convergence of three chains occurred with a maxdiff value of <0.15. The trees inferred from Dataset 1 (a) and Dataset 2 (b) show that the Dicyemida and Orthonectida comprise a monophyletic group, sister to the Rouphozoa. Filled green circles indicate a posterior probability of 1