DINOSAURS. 115 



the reader will find a large framed drawing of the skeleton of 

 Stegosaurus, kindly sent by Professor Marsh, whose forthcoming 

 monograph will be welcomed by all palaeontologists. 



The last, and in some ways the strangest of the Dinosaurs, 

 was the Triceratops^ that flourished in America at the end of the 



Fig. 28. — I, 2. Plates of Stegosaurus. The middle figures show their thick- 

 ness. (After Marsh.) 



long Mesozoic era, during the Cretaceous period. The name 

 refers to the three horn-cores found on the skull, which probably 

 supported true horns like those of oxen. Whereas the Stegosaur 

 was provided with quite a small skull, this monster had one of huge 



' Greek — irds, three ; ceras, horn ; ops, face. 



