DRAGONS OF OLD TIME 149 
way as those of Brontosaurus. The fore limbs were large, as in 
the latter animal; and the extremities of the limbs were provided 
with claws. It had two sternal bones like Diplodocus (see 
Plate XXI.). Taking all present evidence, it appears that the 
Atlantosaurus bore a general resemblance to its smaller con- 
temporary. We can therefore form a fairly good idea of its aspect 
and proportions. 
The same Jurassic strata from the Rocky Mountains have 
Fic. 51.—Neck vertebre of Brontosaurus. 
1. Front view. 2. Back view. 
yielded remains of another big Dinosaur, belonging to the same 
family. This genus, which has been named the Apatosaurus, is 
represented by a nearly complete skeleton, in the Yale College 
Museum ; and it is fortunately in an excellent state of preservation. 
Another species, of smaller size, though not so complete, adorns 
the same collection. This was about thirty feet long, and is 
known as Apatosaurus grandis. 
The remarkably small head is one of the most striking features 
of these Dinosaurs, and presents a curious contrast to the large 
