FIG. 3 in The skull of Triceratops in the palaeontology gallery, Muséum national d'Histoire naturelle, Paris

FIG. 3. — Triceratops horridus Marsh, 1889; Upper Cretaceous, Lance Creek, Converse County, Wyoming, USA; skull MNHN 1912.20 in left lateral view. Abbreviations: Antf, antorbital fenestra; E, epoccipital; ExN, external nares; F, frontal; J, jugal; L, lachrymal; Ltf, lower temporal fenestra; Mx, maxilla; N, nasal; Nf, narial fossa; Nh, nasal horn; P, parietal; Pd, predentary; Pmx, premaxilla; Po, postorbital; Prf, prefrontal; Q, quadrate; Qj, quadratojugal; R, rostral; Sq, squamosal. Scale bar: 50 cm.