GIANT LAND EEPTILES OR DINOSAURS. 



135 



to the upmost Cretaceous rocks of the United States, 

 where the remains which have been unearthed must 

 excite the envy of all European paleontologists. 



As their name implies, one of the most striking 

 features in the organisation of these uncouth monsters 

 is the presence of large horn-cores on the skull, as 



FIG. 41. Side view of the skull of Horned Dinosaur. One-twentieth natural size. 

 a, nostril ; b, eye ; hh', horn-cores ; r, upper part of beak ; p, lower part of 

 beak. (After Marsh.) 



shown in Fig. 41. The skull of which we give a 

 figure is remarkable not only for its gigantic size 

 the length of the specimen, which is said to indicate 

 an immature individual, being about six feet but also 

 for its peculiar armature and structure. An imperfect 

 skull of another species exceeds these dimensions, huge 

 as they are, and is estimated when entire to have had 



