Fig. 4

Evolutionary patterns of sexual size dimorphism in the Chaco Domain. The symbol * and the p in bold (Permutations test) indicates the species in which there is a significant difference in SVL between males and females. The dotted line (---) indicates the criterion of sexual size dimorphism, where those species that equaled or exceeded 15% of the SSD Index of their own family were also considered dimorphic, despite not having a significant p-value in the Permutation test