DIVISIONS OF BIRDS. 395 
which terminates the tail in living birds (fig. 152, B), the tail in 
Archeopteryx is very long, and consists of about twenty distinct 
and separate vertebree, each of which supports a pair of quill- 
Fig, 167.—Archzeopteryx. ‘Tail and detached bones, 
feathers. The tail, therefore, except for the presence of feathers, 
must have been very like that of a Reptile. 
U 
