Figure 3.

Time to most recent common ancestor (TMRCA) for SIVrtg_Kib and other representative SIVs. Bayesian Markov Chain Monte Carlo phylogenies were generated in order to estimate TMRCA by calibrating the relaxed molecular clock using the estimated 10,000 year old separation of the drill (Mandrill leucophaeus) SIVs on mainland Africa from those on Bioko Island, Equatorial Guinea [25]. The scale bar below the phylogenies represents years before present and the black arrow represents the Bioko calibration point used in this analysis. Posterior clade probabilities are shown at branch nodes. The newly discovered SIVrtg_Kib is highlighted in blue.