FIGURE 6 in Melanosternarchus amaru, a new genus and species of electric ghost knifefish (Gymnotiformes: Apteronotidae) from the Amazon Basin

FIGURE 6. Suspensorium, opercular series, and maxilla of Melanosternarchus amaru (ANSP200459) in lateral (A) and medial (B, image reflected) view. Thin, unstained hard tissue associated with opercular bones shown in light gray. Abbreviations: ang, anguloarticular; ap, autopalatine cartilage; cm, coronomeckelian; d, dentary; enp, endopterygoid; h, hyomandibula; iop, interopercle; mx, maxilla; mco, mandibular canal ossicles; m, Meckel's cartilage; mpt, metapterygoid; op, opercle; pop, preopercle; q, quadrate; rar, retroarticular; sop, subopercle; sym, symplectic.