FIGURE 5 in A description of the skeletal morphology of Rana pyrenaica (Anura: Ranidae), with comments on functional morphology, ecological adaptation and relationships with other Iberian ranids

FIGURE 5. Comparison of the pterygoid, squamosal, and parasphenoid between Iberian brown frogs. All these elements correspond to frogs with a similar SVL (around 40–50 mm). For facilitating the comparison, bones have been arranged to a similar size and laterality. Arrows: 1, straighter ramus maxillaris on the pterygoid; 2, angulation between the transverse process and the postero-lateral process on the squamosal; 3, thinner and less leaf-shaped anterior process of the parasphenoid; 4, more concave margo posterior.