Figure 2From: Alkaloids from single skins of the Argentinian toad Melanophryniscus rubriventris (ANURA, BUFONIDAE): An unexpected variability in alkaloid profiles and a profusion of new structuresMap of the collection sites of this study (filled circles) and the earlier study (“x”) of Daly et al. 2007. The larger light grey shaded area is the Las Yungas Biosphere Reserve; the darker grey areas within it are National Parks (P.N.).Back to article page