List of Casts, Models, and Photographs. 1 9 



Triceratops was one of the last and most remarkably- 

 specialized of the Dinosaurs. It was herbivorous, quadru- 

 pedal, with elephant-like legs and feet. The skull was of 

 huge size, 6-8 feet long, with long, powerful horns projecting 

 forward, and a great bony frill projecting backward and com- 

 pletely covering the neck. One-tenth natural size. Length 

 of base, 18 inches. 



Price, $20. 



No. 2. The Duck-billed Dinosaur. Hadrosaunis mirabilis 



Leidy. 



The model of this remarkable Dinosaur is based on an almost 

 complete specimen in the Cope Collection, now in this Museum, 

 which will shortly be placed on exhibition as a mounted 

 skeleton. It was found in the Laramie Cretaceous by Messrs. 

 Wortman and Hill, and described by Professor Cope (under 

 the generic name Diclonhts) in 1883. The animal was thirty 

 feet in length, with a long neck, flattened, duck-like bill, 

 numerous small teeth, small fore limbs, and heavy hind limbs 

 and tail. It was probably of amphibious habits, feeding on 

 soft water-plants. It was covered with a thick, rhinoceros-like 

 hide, parts of which are preserved in Professor Cope's speci- 

 men. One-eleventh natural size; length of base, 12 inches. 



Cope, Proc. Acad. Nat. Sci. Phila., 1883, p. 97; Am. Nat., 1883, p. 774. 



Price, $10. 



No. 3. Leaping Carnivorous Dinosaur. Dryptosaurus (Lae- 

 laps) aquilunguis Cope. 



The first Dinosaur described by Professor Cope was Lcelaps 

 aquilunguis from the New Jersey Cretaceous beds. The model 

 is based upon this fragmentary skeleton and upon the restora- 

 tion by Professor Marsh of the allied form Ceratosaurus. 



The Carnivorous Dinosaurs, although smaller than some of 

 the herbivorous kinds , were animals of great size . This species 



