WARREN MASTODON 107 



lover will also he interested in the osteological collections in the wall 

 cases which show how to tell the age of horses through the growth and 

 development of the teeth. 



Beyond the Horse exhibit on the left are fossils from South America, 

 the most striking of which is the group of giant ground 

 Fossil sloths. There are also good examples of the Glyptodon, 



Mammals of ^ gigantic relative of the armadillo, of the camel-like 

 ^ . Macrauchenia, the rhinoceros-like Toxodon, and other 



strange extinct animals which evolved in South America 

 during the Age of Mammals, when it was an islantl continent, as Aus- 

 tralia is to-day. Here, too, is the great sabre-tooth tiger, one of the 

 host of northern animals that invaded the southern continent upon its 

 union with the northern world, and swept before them to extinction 

 most of its ancient inhabitants. 



In the center of the hall is a skeleton of the giant carnivorous dinosaur 

 Tyrannosaurus excluded from Dinosaur Hall for lack of space To the 

 right is a small collection of fossil remains of man illustrating what is 

 known of the prehistoric record of our own race. 



The principal exhibits on the north side of the hall are the mammoths 



and mastodons and the series of skulls showing the evolution of +iie 



elephant. The "Warren Mastodon" is a clas,sic specimen. It was 



found near Newburg, N. Y., in 1846, and is the finest 



specimen of its kind that has ever been discovered. Next 

 Mastodon • • ^ , i ^ i • r i • 



to it IS a fine skeleton of the mammoth; portions of skin, 



hair and other fragments of a mammoth carcass discoveretl in Alaska 



are also shown. While modern elephants are confined to portions of 



Asia and Africa, fossil remains of elephants and mastoflons show that, 



at one time or another in the past, they were found over the greater 



part of the northern hemisphere. 



The skeleton of an African elephant, the once famous Jumbo, 



whose name has been embodietl in the English language as a term for 



anvthing unusuallv large, is shown for comiiarison with 

 Jumbo . ' . , • 



its extinct relatives. 



[See Handbook No. 4. Animals of the Past, and Guide Leaflet No. 43, 



Mammoths and Ma.'<todons.] 



