PHYLUM VEETEBEATA 



SUB-PHYLUM ACEANIA 

 SUB-PHYLUM CEANIOTA 



Super-CLASS CYCLOSTOMATA 



CLASS MYXINOIDES 

 CLASS PETROMYZONTES 

 Super-CLASS HYPOSTOMATA 

 CLASS HETEROSTRACA 

 OSTEOSTRACA 

 ANTIARCHA 



Super-CLASS GNATHOSTOMATA 

 CLASS ICHTHYES 

 I. Sub-CLASS PISCES 



Division ELASMOBRANCHII 

 Order Proselachii 

 Plagiostomi 

 SELACHII 

 RAIAE 



Division ACANTHODI 

 HOLOCEPHALI 

 TELEOSTOMI 



Order Crossopterygii 



