FOSSTE BIRDS 279 
these two specimens supplement one another in the parts that are 
exposed, we can form a fair notion of what the animal was like. 
PoRTION OF THE SAME SLAB, SHEWING THE EXTREMITY OF THE Birp’s Tait, Natural size. 
About the size of a Rook, its most obvious peculiarity is a long 
Lizard-like tail of 24 vertebree, from each of which springs a pair of 
well-developed rectrices. The 
bill was short and blunt; the 
upper jaw being furnished with ; 
13, and the lower with 3 teeth i 
on each side, all implanted in 
distinct sockets. The vertebrze 
of the neck and back were 
biconcave, the sternum seems 
to have been keeled, and the AED 
matius had 3 free digits. The Maver Anmanrrstton eerie ft 
tibia and fibula do not coal- 
esce, and the former was furnished with a series of feathers 
very similar to those of the tail.1_ Though presenting many 
1 J, Evans, On Portions. . . of the Archxopteryx. London: 1881. 
