#subphylum_Urochordata__Urochordata__Urochorda__subphylum_Urochorda__Tunicata__subphylum_Tunicata  tunicates
  supertype:  #phylum  (biology) the major taxonomic group of animals and plants; contains classes
  member of:  #phylum_Chordata
  member:  #tunicate__urochordate__urochord  primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva
  member:  #class_Ascidiaceae__Ascidiaceae  sometimes classified as an order: sea squirts
     member:  #ascidian  minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves
     member:  #ascidian_tadpole  free-swimming larva of ascidians; they have a tail like a tadpole that contains the notochord
  member:  #class_Thaliacea__Thaliacea  small class of free-swimming tunicates; sometimes classified as an order
     member:  #family_Salpidae__Salpidae  a small family of tunicates in the class Thaliacea
        member:  #genus_Salpa  type (perhaps sole) genus of the Salpidae
           member:  #salp__salpa  minute floating marine tunicate having a transparent body with an opening at each end
     member:  #family_Doliolidae__Doliolidae  oceanic tunicates
        member:  #genus_Doliolum  type genus of the Doliolidae
           member:  #doliolum  free-swimming oceanic tunicate with a barrel-shaped transparent body
  member:  #class_Larvacea__Larvacea  small free-swimming tunicates; sometimes classified as an order
     member:  #larvacean  any member of the class Larvacea
     member:  #genus_Appendicularia  a genus of chordates in the class Larvacea
        member:  #appendicularia  free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates

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