CLASSIFICATION 



241 



Sub-division of the Phyla into Classes 



Kingdom, Animalia 

 Phylum, Protozoa 

 Class, Sarcodina 

 Class, Mantigophora 

 Class, Infusoria 

 Class, Sporozoa 



Phylum, Mesozoa 



Phylum, Porifera 

 Class, Calcarea 

 Class, Hexactinellida 

 Class, Demospongia 



Phylum, Coelenterata 

 Class, Hydrozoa 

 Class, Scyphozoa 

 Class, Actinozoa 

 Class, Ctenophora 



Phylum, Platyhelminthes 

 Class, Turbellaria 

 Class, Trematoda 

 Class, Cestoda 

 Class, Nemertinea 



Phylum, N emaihelminthes 

 Class, Nematoda 

 Class, Acxinthocephala 

 Class, Chcetognatha 



Phylum, Trochelminlhes 

 Class, Rotifera 

 Class, Gastrotricha 



Phylum, ^follusco^da 

 Class, Polyzoa 

 Class, Phoronida 

 Class, Brachiopoda 



Phylum, Mollusca 

 Class, Amphineura 

 Class, Pelecypoda 

 Class, Gastropoda 

 Class, Cephalopoda 

 Phylum, Echinodermaia 

 Class, Asteroidea 

 Class, Ophiuroidea 

 Class, Echinaidea 

 Class, Holothuroidea 

 Class, Crinoidea 

 Phylum, Annulala 

 Class, Archi-annelida 

 Class, Chxetopoda 

 Class, Sipunculoidea 

 Class, Hirudinea 

 Phylum, Arthropoda 

 Class, Crustacea 

 Class, Ottychophora 

 Class, Myriapoda 

 Class, Insecta 

 Class, Arachnida 

 Phylum, Chordata 



Sub-phylum, Cephalochordata 

 Sub-phylum, Urochordala 

 Sub-phylum, Hemichordata 

 Sub-phylum, Verlebrata 



Class, Cyclostomata 



Class, Pisces 



Class, Ainphilna 



Class, Reptilia 



Class, Aves 



Class, Maniinalia 



