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Plate VI 
Skull of Lambeosaurus lambei Parks. Type, No. 2809, Geol. Surv., Can. Viewed from the 
right side. Ar, articular; Dn, dentary; Ept, eetopterygoid ; Fr, frontal; jugal; L, lachrymal; 
Mx, maxillary; N, nasal; no, external nares; Oput, paraoccipital; P, parietal; Pal , palatine; Pd, 
preden tary; Pmx, premaxillary; Pof, postorbital; Prf, prefontal; Prs, presphenoid; Pt, pterygoid; 
Q, quadrate; Qj, quadratojugal; Sa, surangular; Par , prearticular; Sq, squamosal. About one-sixth 
natural size. After Lambe. (Page 35.) 
