#family_Equisetaceae__Equisetaceae__horsetail_family__horsetailfamily  sole surviving family of the Equisetales: fern allies
  supertype:  fern_family  families of ferns and fern allies
  member:  genus_Equisetum
  member of:  order_Equisetales__Equisetales  lower tracheophytes in existence since the Devonian
     member of:  class_Sphenopsida__Sphenopsida__Equisetatae__class_Equisetatae  horsetails and related forms
        member of:  division_Pteridophyta__Pteridophyta  containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
           member of:  kingdom_Plantae__Plantae__plant_kingdom__plantkingdom  taxonomic kingdom comprising all living or extinct plants

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