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General Biology 



Class V. Aves ( 



Subclass 



I. 



Archaeornithes ( 



Subclass 



II. 



Neornithes ( 



Order 



1. 



Hesperornithiformes ( 



Order 



2. 



Ichthyornithiformes ( 



Order 



3. 



Struthioniformes ( 



Order 



4. 



Rheiformes ( 



Order 



5. 



Casuariiformes ( 



Order 



6. 



Crypturiformes ( 



Order 



7. 



Dinornithiformes ( 



Order 



8. 



Aepyornithiformes ( 



Order 



9. 



Apterygiformes ( 



Order 



10. 



Sphenisciformes ( 



Order 



11. 



Colymbiformes ( 



Order 



12. 



Procellariiformes ( 



Order 



13. 



Ciconiiformes ( 



Order 



14. 



Anseriformes ( 



Order 



15. 



Falconiformes ( 



Order 



16. 



Galliformes ( 



Order 



17. 



Gruiformes ( 



Order 



18. 



Charadriiformes ( 



Order 



19. 



Cuculiformes ( 



Order 20. 



Coraciiformes ( 



Order 21. 



Passeriformes ( 



Class VI. 



Mammalia ( 



Subclass 



I. 



Prototheria ( 



Order 



1. 



Monotremata ( 



Subclass II. 



Eutheria ( 



Division 



I. 



Didelphia ( 



Order 



1. 



Marsupialia ( 



Division 



II. 



Monodejphia ( 



Section A. 



Unguiculata ( 



Order 



1. 



Insectivora ( 



Order 



2. 



Dermoptera ( 



Order 



3. 



Chiroptera ( 



Order 



4. 



Carnivora ( 



Order 



5. 



Rodentia ( 



Order 



6. 



Edentata ( 



Order 



7. 



Pholidota ( 



Order 



8. 



Tubulidentata ( 



