ITS CHARACTERISTIC ANIMALS. 189 
though it has a fan-shaped tail, instead of the 
broad flapper of the Whales. It inhabits fresh 
waters or shoal waters, and is not so exclusively 
aquatic as the oceanic Cetaceans. Its most strik- 
ing feature is the form of the lower jaw, which is 
bent downward, with the front teeth hanging 
from it. This animal is called the Manatee, or 
Sea-Cow. There are three species known to 
naturalists, — one in Tampa Bay, one in the 
Amazon, and one in the Red Sea. In the Ter- 
tiary deposits of Germany there has been found 
an animal allied in some of its features to those 
described by Cuvier, but it has the crown of its 
teeth folded like the Tapir, while the lower jaw 
is turned down with a long tusk growing from it. 
This animal has been called the Dinotherium. A 
part of the head, showing the heavy jaws and the 
formidable tusk, is 
represented in the 
subjoined wood-cut. 
Its hanging lower 
jaw, with the pro- 
truding tusk, corre- 
sponds perfectly to 
the formation of the 
lower jaw and teeth 
in the Manatee. 
Some resemblance 
of the Dinotherium to the Mastodon suggested a 
