FIGURE 1 in A new species of Trachytherus (Notoungulata: Mesotheriidae) from the late Oligocene (Deseadan) of Southern Peru and the middle latitude diversification of early diverging mesotheriids

FIGURE 1. Map of South America showing the approximate locations of sites that have yielded remains of Oligocene mesotheriids: stars are to indicate locations of undescribed/unclassified Tinguirirican mesotheriid materials; octagons indicate the widely dispersed, Deseadan Trachytherus spegazzinianus; and diamonds indicate localities containing all other recognized species of Trachytherus (Deseadan). The dashed oval circumscribes the area we refer to as the "Bolivian Oroclinal Region," an area that contains all four recognized species of Trachytherus (see text for details). Background map modified from NASA image.