Figure 1. A. Location of new collection fromPorites spp. Included in this study. B. Bayesian posterior consensus tree of Ostreobium spp. based on chloroplast gene rbcL , with red labels indicating new sequence data resulting from this study Numbers to the right of each branch represent the posterior probability of the indicated clade. The two dotted lines refer to possible closing date of the Isthmus of Panama according to Montes et al. (2012) (older date, 12-15 Ma) and O’Dea et al. (2016) (the younger date of 3 Ma). Localities are indicated by the four colors, where green corresponds to samples from the Atlantic ocean, purple indicates Pacific, red is the Red Sea, and samples highlighted in Yellow are from the Indo-Pacific. The purple horizontal bars represent the 95% Highest Posterior Density for the node divergence time.