37 
Pedestal 3. — Restoration of Colossochelys atlas, one of the 
huge turtles of the Tertiary period. 
North Wall of Hall 35, Pedestal 4. — Leg bones and 
complete skeleton of Dinornis, a huge, wingless bird which in- 
habited New Zealand. The tibia of some species is nearly a yard 
long and as large as that of a horse. Also casts of limbs of Siva- 
therium^ a four-horned antelope or giraffe of elephantine size. 
East Wall, — Casts showing heads of several species of Bos, 
ancestors of the modern cow; also casts of the remains of a 
human skeleton found in limestone in Guadaloupe. 
South Wall, Pedestal 5. — Casts of skulls of several 
species of elephants of this time. Casts of skulls of Toxodon, 
Sivatherium^ Nototherimn, and other large mammals. 
The Toxodon was a quadruped of huge size, which combined 
characters of rodents, elephants and whales. Its teeth show it to 
have been an herbivorous animal and its habits were probably 
like those of the Manatee or sea cow. 
The Nototherium was an Australian mammal, of the wom- 
bat type, though as large as the rhinoceros. It probably had 
some of the characters of the elephant, and was closely allied to 
the Diprotodon. The humerus indicates that it was a burrowing 
animal, but it is hard to understand how an animal of so great 
size could have been of such habit. 
