CLASSIFICATION OF VERTEBRATA 



Order Mesosauri 

 Nothosauri 

 Plesiosauri 



IX. Sub-CLASS ICHTHYOSAURIA 

 X. Sub-CLASS PYTHONOMORPHA 



Order Dolichosauri 



... Mosasauri 



XL Sub-CLASS SAURIA 

 Order Eusauri 



GECKONES 

 LACERTAE 

 CHAMAELEONTES 



Order Ophidia 

 CLASS AVES 



Sub-CLASS ARCHAEORNITHES 

 Sub-CLASS NEORNITHES 



Division EATITAE 



ODONTOLCAE 

 CARINATAE 



1. LEGION 



COL YMBOMORPHAE 



flchthyornithes 

 yColymbiformes 



JCOLYMBI 

 {PODICIPEDES 

 SPHENISCI 



2. LEGION 



PELARGOMORPHAE 



Ciconiiformes 



Anseriformes 

 Falconiformes 



ISphenisciformes 



( Procellariiformes PROCELLARIAE 

 STEGANOPODES 

 ARDEAE 



] CICONIAE 



[PHOENICOPTERI 



JANSERES 



{PALAMEDEAE 



JCATHARTAE 



IACCIPITRES 



