Nos. 455-456] FAMILIES AND HIGHER GROUPS. 



849 



A Classification of Birds. 



Phylum : — 



Vertebrata. 



Branch : — 

 Craniata. 



Tribe: — 



Sauropsida. 



Classes : — 

 Reptilia. 

 Aves. 



Class Aves. 

 Order I. Saurur^. 



Supersuborder I. Archornithiformes. 



Suborder 



I. 



Archornithes. 



Family 



I. 



Archseopterygidae. 





Order II. 



Ornithur/E. 



Supersuborder 



II. 



Drom.eognath^. 



Suborder 



II. 



Struthionithes. 



Family 





Struthionidee. 



Suborder 



III. 



Rheornithes. 



Family 





Rheidae. 



Suborder 



IV. 



Casuariornithes. 



Family 





Dromaiidae. 





II. 



Casuariidae. 





III. 



Dromornithidae. 



Suborder 



V. 



Dinornithes. 



Family 





Dinornithidae. 



Suborder 



VI. 



yEPYORNITHES. 







^pyornithidae. 



Supersuborder 



III. 



Odontoholc.e. 



Suborder 



VII. 



Pygopoformes. 



Superfamily 





Hesperornithoidea. 



Family 





Enaliornithidse. 



II. 



Hesperornithidae. 



