Fig. 2 in Not withering on the evolutionary vine: systematic revision of the Brown Vine Snake (Reptilia: Squamata: Oxybelis) from its northern distribution

Fig. 2 Image showing the variability in snout shape among populations of Oxybelis aeneus. a A slender taper from the occipital region to rostral scale (UAZ 16787, Arizona, USA); b tapered, but snout in front of eyes is slightly constricted (FMNH 64417, Brazil); c a taper from the occipital region but the area in front of the eyes is broad and the rostal is rounded (UIMNH 25069, San Luis Potosí, Mexico)