G. It. Wieland — Notes on the Armored Dinosauria. 121 



tions than one might suppose from the minor mention it 

 receives in all accounts of Dinosaurian material from the 

 Ceratops beds of the Laramie and Belly River series. 



The plain fact is that we have been entirely misled by a 

 seeming paucity of such armor not in accord with the existence 

 in the Laramie of numerous representatives of the armored 

 race, each bearing, as one may readilj' calculate, anywhere from 

 200 to 300 dermal elements varying from mere tubercles up to 

 huge staked plates. Indeed it would be of very considerable 

 interest to know the actual number and proportion of these 



Fig. 6. 



Figure 6. — Subrhomboidal Nodosaurid or Ceratopsid dermal element 

 from the Ceratops beds of Converse County, Wyoming, x J. (Thickness 

 1'5 centimeters.) 



The upper surface, showing the large nutrition canals radiating from the 

 subcentral and little elevated nodal area. The under surface is distinctly 

 convex and shows the Nodosaurus textilis type of striated surface. A 

 frequent and typical form. 



elements in the collections, and especially their associations ; 

 though it is, we repeat, greatly to be feared that field notes suffi- 

 cient to reveal the full cumulative value of this evidence may 

 be lacking. The more are we impressed with this idea because 

 of the fact that the discovery of the armored saurians has been 

 late, is only beginning now. Furthermore we can add very 

 tangible evidence to these views, having but recently secured 

 from Mr. Sternberg a collection from the Laramie of some 

 thirty most interesting dermal elements, the chief forms of 



