90 U .l/.V.'A'.V MASTODOX 



of t\w skeletons of liorsc and man is hrou^lit out in the exhn)it of a rear- 

 ing:; horse Ix'in^' controHed 1)\- man. A comparison of these two skeh'tons 

 will show thai with some modification the hones of the one c()rres})on(l 

 with the hones of the other. The horse lover will also he interested in 

 the ()ste()loji;ieal collections in the wall cases which show how to tell the 

 a^o of horses through the growth and development of the teeth. 



l^ex'ond the Horse exhibit on the left are fossils from South America, 

 the most striking!; of which is the ji;roup of giant j2;round 

 ^°^^^^ sloths. There are also j>;oo(l examples of the (ilyptodon, 



„ . a <i;igantic relative of the armadillo, of the camel-like 



America M (icrduchcnid, the rhinoceros-like Toxodon, and other 



stran<2;e extinct animals which evolved in South America 

 during the Age of Mannnals. when it was an island continent, as 

 Australia is to-day. Here too, is the great sahre-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. 



The ])rincipal exhibits on the north side of the hall are the mannnoths 

 and mastodons and the scries of skulls showing the evoluticjn of the ele- 

 phants. The ''Warren Mastodon" is a classic specimen. 



-_ ^ , It was found near Newburg, N. Y. in 1846, and is the finest 



* Mastodon <• • i • i , , 



specinuMi of its kmd that has ever been discovered. There 



is some confusion in the mind of the layman between the mammoth and 

 mastodon; in a general way they are both elephants, the main distinction 

 between them being in the character of the teeth. While modern 

 elephants are confined to portions of Asia and Africa, fossil remains of 

 elepliants and mastodons show that at one time or another in the past, 

 they were found over the greater part of the northern hemisphere. 

 Sk(4etons of the Asiatic and African elephants are shown for compari- 

 son with their extinct relatives and among these, is the 

 J Jumbo " ' 



once famous Jumbo, whose name has been embodied in the 

 English language as a term for anything unusually large. 



[See Handbook No. 4, Animals of the J^(ist.\ 



SOUTHEAST WING 

 Fossil Mammals of the Tertl\ky Pkhiod 



Return to the East Corridor and continue into the Southeast Wing or 

 Tertiary Hall which contains the Fossil Mammals of the Tertiary Period. 



The geological age to which all the fossils shown in this hall belong, 

 covers a period of from 1()(),()()0 to 3,()()().()0() years. At each side of the 



