#phylum_Nematoda__Nematoda__Aschelminthes__phylum_Aschelminthes  unsegmented worms: roundworms; threadworms; eelworms
  supertype:  phylum  (biology) the major taxonomic group of animals and plants; contains classes
  member:  helminth  class_Aphasmidia  class_Phasmidia  nematode_worm  family_Ascaridae  family_Oxyuridae  family_Cephalobidae  family_Tylenchidae  family_Ancylostomatidae  family_Filariidae  family_Dracunculidae
  member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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