EXTINCT MONSTERS. 
116 
dimensions and remarkable shape (see Figs. 29 and 30). ^ 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 Tricerafops^ 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 
* 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 Illush'ated 
Magazine for April, 1892 (quoted in the Reviezv 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. 
