CLASSIFICATION 



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Subclass II. Teleostomi ( 



Order 1. Crossopterygii ( 



Order 2. Chondrostei ( 



Order 3. Holostei ( 



Order 4. Teleostei ( 



Subclass III. Dipneusti (Dipnoi), ( 



Class III. Amphibia ( 



Subclass I. Stegocephali ( 

 Subclass II. Lissamphibia ( 



Order 1. Apoda (Gymnophiona), ( 



Order 2. Urodela ( 



Order 3. Anura ( 



Class IV. Reptilia ( 



Order 1. Chelonia ( 



Order 2. Crocodilia ( 



Order 3. Sauria (Squamata), ( 



Division I. Lacertilia ( 



Division II. Ophidia ( 



Class V. Aves 

 Subclass 

 Subclass 



Order 1. 



Order 2. 



Order 3. 



Order 4. 



Order 5. 



Order 6. 



Order 7. 



Order 8. 



Order 9. 



Order 10. 



Order 11. 



Order 12. 



Order 13. 



Order 14. 



Order 15. 



Order 16. 



Order 17. 



Order 18. 



Order 19. 



Order 20. 



Order 21. 



I. Archaeornithes ( 



II. Neornithes ( 

 Hesperornithiformes ( 

 Ichthyornithiformes ( 

 Struthioniformes ( 

 Rheiformes ( 

 Casuariiformes ( 

 Crypturiformes ( 

 Dinornithiformes ( 

 Aepyornithiformes ( 

 Apterygiformes ( 

 Sphenisciformes ( 

 Colymbiformes ( 

 Procellariiformes ( 

 Ciconiiformes ( 

 Anseriformes ( 

 Falconiformes ( 

 Galliformes ( 

 Gruiformes ( 

 Charadriiformes ( 

 Cuculiformes ( 

 Coraciiformes ( 

 Passeriformes ( 



