CLASSIFICATION OF VERTEBRA TA 



Order Actinopterygii 



CHONDROSTEI 

 HOLOSTEI 

 TELEOSTEI 

 PHYSOSTOMI 

 PHYSOCLYSTI 

 PLECTOGNATHI 

 LOPHOBRANCHII 



II. Sub-CLASS DIPNOI 

 Order Arthrodira 

 .. Sirenoidei 



CLASS AMPHIBIA 



I. Sub-CLASS PHKACTAMPHIBIA 

 STEGOCEPHALI 



Order Lepospondyli 



BRANCHIOSAURI 

 MICROSAURI 

 AISTOPODES 

 Order Temnospondyli 

 Stereospondyli 



II. Sub-CLASS LISSAMPHIBIA 



Order Urodela 

 .. Apoda 

 Anura 



PHANEROGLOSSA 

 ARCIFERA 



FlRMISTERNIA 



AGLOSSA 



CLASS REPTILIA 



I. Sub-CLASS PROREPTILIA 

 II. PROSAURIA 



