Figure 3 in Global historical biogeography of hadrosaurid dinosaurs

Figure 3. Time-calibrated phylogram of Saurolophinae based on the reduced strict consensus tree of Prieto-Márquez (2010). Letters at each node represent ancestral areas as inferred in the DIVA analysis; their meaning is as in Fig. 1. The colors of the stratigraphic ranges of taxa indicate the following areas: white = South America; black = North America; light grey = Asia; dark grey = range of an entire clade. Black stars indicate vicariance. Arrows indicate the direction of dispersal events. Note that the stratigraphic ranges for each species are not point estimates, but just extend to indicate divisions of particular geochronological stages. Geochronological ages from Gradstein et al. (2004).