FIGURE 4 in Redescription and expansion of the geographic distribution of Phenacorhamdia nigrolineata (Siluriformes: Heptapteridae)

FIGURE 4 | Illustration of the cranium of Phenacorhamdia nigrolineata, dorsal view, MCP 53512, 40.0 mm SL. Abbreviations: af, anterior fontanel; AN, antorbital; AP, autopalatine; EP, epioccipital; ES, extrascapula; EX, exoccipital; FR, frontal; i1–6, infraorbital sensory branches 1 to 6; LE, lateral ethmoid; ME, mesethmoid; MX, maxilla; NA, nasal; pf, posterior fontanel; PRE, premaxilla; PT, pterotic; s1–8, supraorbital sensory branches 1 to 8; s2+i2) supraorbital sensory branch 2 + infraorbital sensory branch 2; SP, sphenotic; SOC, supraoccipital; SOCP, supraoccipital process. Scale bars = 1 mm.