Figure 2 in Snakes on an African plain: the radiation of Crotaphopeltis and Philothamnus into open habitat (Serpentes: Colubridae)

Figure 2 Chronogramsfor Crotaphopeltis and Philothamnus, with supportvalues fromthe BEAST analysis of theunconstrainedphylogeny (Fig. S1). Supported nodes (≥ 0.95 posterior probability) are indicated by black dots. Within Philothamnus, clade 1 denotes a group of species that comprise of predominantly forest species in the northern Afrotropical realm, and clade 2 a group of species that comprise open habitat specialists in southern Africa, as well as widespread habitat generalists in the rest of sub-Saharan Africa. Habitat reconstructions and terminal taxa are colour-coded according habitat classes; green (closed habitat), brown (open habitat) and green + brown (both open and closed habitats), with likelihood values for each state (Table 1) shown as a proportion in the pie charts at each node. Full-size DOI: 10.7717/peerj.11728/fig-2