Figure 1. Distribution of giant tortoises throughout the Galápagos archipelago.

Island names are capitalized; shaded islands indicate presence of extant tortoise populations (species names italicized). Populations are indicated by geographical name (e.g., Vólcan Wolf) and associated sampling site (e.g., PBL, PBR). Triangles represent volcanoes on Isabela Island and circles indicate additional sampling locations. Figure modified from Russello et al. [5].