Plant Kingdom

• >> Kingdom Animalia
  • Phylum Proifera
    
    
  • Phylum Cnidaria
    
    
  • Phylum Ctenophora
    
    
  • Phylum Platyhelminthes
    
    
  • Phylum Nematoda and Rotifera
    
    
  • Phylum Mollusca
    
    
  • Phylum Annelida
    
    
  • Phylum Arthropoda
    
    
  • Phylum Echinodermata
    
    
  • Phylum Hemichordata
    
    
  • Phylum Chordata
    
    • Class Placodermi
      
      
    • Class Agnatha
      
      
    • Class Chondrichthyes
      
      
    • Class Osteichthyes
      
      
    • Class Amphibia
      
      
    • Class Reptilia
      
      
    • Class Aves
      
      
    • Class Mammalia
      
      
    
    
    

Phylum Hemichordata

Includes the acorn worms

 

Characteristics:

-gill slits

-dorsal, tubular nerve cord

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