Ontogeny of the hyopalatine arch, jaws, and opercular series of Ctenolucius hujeta (MTD-F 40162, cleared and double stained). A 4.3 mm NL. B 7.5 mm SL. C 9.6 mm SL. Abbreviations: An, angulo-articular; Apa, autopalatine; CM, coronomeckelian; De, dentary; Ecpt, ectopterygoid; Enpt, endopterygoid; Hy, hyomandibular; HY-SC, hyo-symplectic cartilage; Iop, interopercle; MC, Meckel’s cartilage; Met, metapterygoid; Mx, maxilla; Op, opercle; PAp, pars autopalatina; PMet, pars metapterygoidea; Pmx, premaxilla; Pop, preopercle; PQ, pars quadrata; Q, quadrate; Ra, retroarticular; Sop, subopercle; Sy, symplectic.