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Ventral (A), dorsal (B), left lateral (C), anterodorsal (D) views. f, frontal; fo, frontal ornamentation (grooves and ridges); l, lacrimal; ld, lacrimal duct; n, nasal; nb, nasal boss; p, parietal; pdf, descending flange of the parietal; pf, prefrontal; pif, pineal foramen; po, postorbital; pof, postfrontal; pp, preparietal; ppc, preparietal crests (forming a weak longitudinal grove between them).
