PLATE XXIV. 



TYPE OF CENTROSAURUS APERTUS LAMBE. 



(Seep. 93.) 



After the original by Lambe. 



Specimen No. 971, Canadian Geological Survey collection. 

 Fig. 1. Dorsal view of parietal crest. 

 Fig. 2. Right lateral view. 

 Fig. 3. Lateral view of nasal horn core. 

 Fig. 4. Section of horn core. 



a, Parieto-squamosal suture; b, parieto-frontal suture. 



One-eighth natural size. 



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