subkingdom Eumetazoa

  phylogenetic group Bilateria

      subgroup Protostomia

sub-subgroup Spiralia

• phylum Rotifera

• phylum Platyhelminthes

 
• class Turbellaria

(recently divided into many classes, one of which incorporates the following two, parasitic "classes")
 
• class Trematoda

 
• class Cestoda
  
  
  
• phylum Nemertea

(not required in Summer or Distance Education versions)



• phylum Mollusca

 
• class Polyplacophora

 
• class Bivalvia

 
• class Gastropoda

 
• class Cephalopoda

• phylum Annelida

 
• class Polychaeta

(a paraphyletic grouping; no substitute classification has met wide acceptance)
 
• class Clitellata

 
• subclass Oligochaeta

 
• subclass Hirudinea

• class Pogonophora

• phylum Bryozoa (also called Ectoprocta)

(one of 3 or 4 phyla called lophophorates; the others are not included in ZO 150)

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Maintained by Sam Mozley (click to send me E-mail)

Last modified on September 25, 2002