THE AGE OF GREAT REPTILES. 
67 
long, with the other parts of the body in proportion, 
except the front legs, which are small. The animal, 
we should think from its structure, walked half-erect 
on its hind limbs like a kangaroo of the present day. 
It had a long alligator 
tail and large jaws full 
of teeth an inch and a 
half in length. The 
name given to this ani¬ 
mal is dinosaur, which 
means a terrible lizard. 
These creatures ranged 
in size from a small rab¬ 
bit to the largest beast 
ever known — perhaps 
eighty feet in length. 
In the Delaware val¬ 
ley has been found the 
green lizard, or mega- 
saur. It seemed to be 
fish, crocodile, and beast 
combined. A dozen or 
more “ saurs ” have been found and described, but I 
will not trouble you with their long names. If you 
should see their skeletons in a museum you would 
know from the last syllable of the name that they 
belong to this age. Duplicates of the originals have 
been cast and are now in all the important museums. 
Another curious-looking creature of this age is 
one which has a large, bird like head full of sharp 
teeth, and broad-webbed front feet which are long 
Fig. 36.—Track of reptile on 
Triassic rock. 
