178 



CLASSIFICATION OF ANIMALS 



' a 



Parazoa 



Enterozoa 



Coelenterata 

 Dip/ohlastic 

 Radiate 



Piafy/ieiminthes 

 Trlpiohlastic 

 Acoe I ornate 

 A/on -metameric 

 Bilateral 



Annelida 



Triploblastic 

 Coelomate 

 Pfetameric 

 Bilateral 



Echinodermata 

 Triploblastic 

 Coelomate 

 Alon —metameric 

 Badiate 



Mollusca 



Triploblastic 



Coelomate 



Alon —metameric 



Bilateral 



Chordata 



Triploblastic 

 Coelomate 

 Tietameric 

 Bilateral 



Fig. 76 —Types of structure in the major phyla of the Animal Kingdom. 



