Phylogenetic relationships of Ostreoidea, based on the concatenated nucleotide sequences of 12 mitochondrial protein-coding genes and two ribosomal RNA genes. The reconstructed Bayesian Inference (BI) phylogram is shown. The first number at each node is Bayesian posterior probability (PP) and the second number is the bootstrap proportion (BP) of Maximum Likelihood (ML) analyses. The nodal with maximum statistical supports (PP = 1; BP = 100) is marked with a solid red circle. BP values under 80 and PP values under 0.90 are marked as a dash line.