#family_Psilophytaceae__Psilophytaceae  Paleozoic plants
  supertype:  #fern_family  families of ferns and fern allies
  member of:  #order_Psilophytales
  member:  #genus_Psilophyton  type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia
     member:  #psilophyton  any plant or fossil of the genus Psilophyton

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