FIGURE 4 in The fossil record of Ceratophrys Wied-Neuwied (Anura: Ceratophryidae): a revision and update of fossil South American horned frogs

FIGURE 4. Comparison of the fossils from Lagoa Santa (Mina Gerais, Brazil) assigned to Ceratophrys cornuta by Günther (1859) and to the clade [C. aurita–C. joazeirensis] herein (NHMUK OR 18896; 18896a), and selected living Ceratophrys. A−C, C. cornuta (MZUSP 151382); D−F, fossil specimen NHMUK OR 18896; G–I, fossil specimen NHMUK OR 18896a; J–L, C. aurita (MLP 1280, specimen with broken right parieto-squamosal arch); M–O, C. joazeirensis (MZUSP 56463, specimen with articulated mandible). A, D, G, J, M, dorsal views; B, E, H, K, N, ventral views; C, F, I, L, O, posterior views. Abbreviations: lc, lateral crest; mc, medial crest; mp, maxillary process of nasal; m, maxilla, n, nasal; np, neopalatine; oc, occipital condyles; pm, premaxilla, pof, postorbital fenestra; pp, pars palatina; ppa, discrete pars palatina absent, psa, parieto-squamosal arch; pt, pterygoid, ptp, pterygoid process; sop, squamosal otic plate; ss, supraorbital shelf; v, vomer. Scale bar is 5 mm.