#family_Sirenidae__Sirenidae  sirens
  supertype:  #amphibian_family__amphibianfamily  any family of amphibians
  member of:  #order_Urodella
  member:  #genus_Siren  a genus of Sirenidae
     member:  #siren  eel-like aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills

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