Figure 2
From: Most species are not limited by an Amazonian river postulated to be a border between endemism areas
Evidence suggesting that the Madeira River could have functioned as a vicariance barrier for Callicebus brunneus and Callicebus dubius. (a) Phylogenetic hypothesis of small, large and non-flying mammals (72 spp); (b) Vicariance hypothesis; and (c) Species distributions along the Madeira River; black squares represent known occurrence of C. brunneus, and gray squares represent known occurrence of C. dubius; the black solid line represents the Madeira River; the red solid line represents the Madre de Dios River in Bolivia and the dashed line represents the Amazon River. See Supplementary Fig. S7 for detailed phylogenetic hypotheses associated with species distributions along Madeira River (right or left bank of the river). Map generated using QGIS v2.18 (http://www.qgis.org).
