PLATE VII 



Skull of CHASMOSAURUS BREVIROSTRIS, type, No. 5436 Ct. Royal 

 Ontario Museum of Palaeontology, about 1/12 natural size. 



Courtesy of the Royal Ontario Museum of Palaeontology. 



Skull of CHASMOSAURUS cf. KAISENI, No. 40 University of Alberta, 

 about 1/8 natural size. 



Courtesy of the University of Alberta. 



150 



