FIGURE 4 in A new long-snouted Corydoras (Siluriformes: Callichthyidae) from the rio Xingu and rio Tapajós basins, Brazilian Amazon

FIGURE 4 | Details on cranium osteological pattern in a c&s paratype of Corydoras caramater (LIA 1073, 35.9 mm SL), showing general morphology of (A) lateral ethmoid in lateral view, and of (B) mesethmoid in dorsal view. Abbreviations: f: frontal, le: lateral ethmoid, n: nasal, pes: pterotic-extrascapular, pso: parieto-supraoccipital, sph: sphenotic. Additional pore of the temporal sensory canal at sphenotic outlined in yellow. Area where the illustrated bones are located in fish's body marked in red in the miniature drawing of the new species. Scale bars = 1 mm.