Kingdom [Plantae] Haeckel (1866) - plants
Status: extant
   Division Gymnospermophyta Cleal (1994) - seed plants see Infraphylum Gymnospermae auct.
  Status: extant
     Class †Lagenostomopsida [monotypic]
    Status: fossil
       Order †Lagenostomales
      Status: fossil
         Family †Physostomaceae
        Status: fossil