Fig. 3 in On the origin and diversification of Venezuelan freshwater fishes: the genus Gephyrocharax (Ostariophysi: Characidae) a case study

Fig. 3. Scheme for the possible origin of the species of Gephyrocharax in Venezuela. Hypothesized changes in the course of the Orinoco River in Venezuela and how they may have influenced the formation of major watersheds within the country follow Rod (1981), Díaz de Gamero (1996), and Lundberg et al. (1998). Major river basins in Venezuela are depicted in Fig. 1. (*) indicates simpatry.