Classification 



The Amphibia are classified as follows : 

 Order i. The Urodela (Gr. } oura, tail ; delos^ 

 conspicuous). Amphibians with long, round bodies, and 



Fig. 6. — Skeleton of a Fossil Flying Reptile (Pterodactylus crassirostris), 

 and (A) Restoration of the Animal on a Smaller Scale. 



having long, flattened tails which they retain throughout 

 their existence. 



Order 2. The Anura (Gr., a-, an- y without ; oura, 

 tail), including those Amphibians which in the adult 

 stage have lost all signs of a tail. 



b.r. 81 II 



