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Marginal density of timing of the most recent common ancestor (tMRCA) obtained from the DR sequences. The diagram was generated using Tracer v1.5.0 and shows the marginal distribution of the most common ancestor plotted against frequency of trees. The tMRCAs of BSP (both strict and relaxed), constant strict, constant relaxed, and exponential strict were estimated in 1963, 1967, 1966, and 1957, respectively.
