Additional file 6.

Age estimations of the nodes in Fig.3and Additional file5. Vertical axis, estimated age (MY). Horizontal axis, nodes. White circles, estimation using the combined mitochondrial genes (cox1, rrnL+trnL, nad1, cob) in Beast, with 95% confidence intervals (dashed lines) (Fig. 3). Black circles, estimation using only cox1 in Beast, with 95% confidence interval (solid line) (Additional file 5). Red circles, estimation using the gen cox1 in r8s. Estimations using cox1 alone were calibrated with the node "Sardinian clade [cox1]", and those using the combined mtDNA with the node "Sardinian clade [mt]". Note than in the estimation using the combined mtDNA genes the Sardinian species were not included.

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Ribera et al. BMC Evolutionary Biology 2010 10:29   doi:10.1186/1471-2148-10-29