Fig. 11

Variation in the sphenethmoid morphology in Amazophrynella, Nannophryne, Peltophryne, and Rhaebo sensu lato (sl). Different cranial bones are colored as follows for reference: blue (maxilla and premaxilla), dark grey (vomers), light grey (parasphenoid), pink (palatines), and yellow (sphenethmoid). Figures of Peltophryne guentheri and Rhaebo colomai were redrawn and slightly modified from [95] and [121]