#class_Pteridospermopsida__Pteridospermopsida  extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
  supertype:  class__clas  (biology) a taxonomic group containing one or more orders
  member of:  class_Gymnospermae
  member:  order_Cycadofilicales__Cycadofilicales__Lyginopteridales__order_Lyginopteridales  fossil gymnospermous trees or climbing plants from the Devonian: seed ferns
     member:  genus_Lyginopteris__Lyginopteris  genus of fossil seed ferns of the Carboniferous

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