n6 EXTINCT MONSTERS. 



dimensions and remarkable shape (see Figs. 29 and so). 1 In the 

 younger ones it was about six feet long, but in an old individual 

 must have reached a length of seven or eight feet. Such a skull 

 is only surpassed by some whales of the present day. Twenty 

 different skulls of this kind have been found, and Professor Marsh 

 places the horned Dinosaurs in a separate family, to which he has 

 given the name Ceratopsidse, or horn-faced. Their remains come 

 from the Laramie beds, believed to be of Cretaceous age, but repre- 

 senting a remarkably mixed fauna and flora, so that some have 



FIG. 29. Head of Triceratops, seen from above. (After Marsh.) 



considered them to be Tertiary. The strata containing these fossils 

 are very rich in organic remains, and have yielded not only other 

 Dinosaurs, but Plesiosaurs, crocodiles, turtles, many small reptiles, 

 a few birds, fishes, and small mammals. The Ceratops beds are 



1 This skeleton has not yet been set up in the Yale College Museum, 

 but will be before long. Our artist has drawn it as if set up, with a man 

 standing by for comparison. In an article in The Californian Illustrated 

 Magazine for April, 1892 (quoted in the Review of Reviews for May), an 

 American writer incorrectly describes this monster as " higher than Jumbo, 

 and longer than two Jumbos placed in a row." But the article is altogether 

 untrustworthy, and the two "restorations" are absurd. 



