Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Lycopodiobiotina Doweld (2001)
         Phylum Isoëtophyta Doweld (2001)
           Subphylum Isoëtophytina Doweld (2001)
             Class †Lepidocarpopsida Doweld (2001)
               Order †Lepidocarpales G.M. Smith (1938)
                 Family †Spenceritaceae B. Thomas & Brack-Hanes ex Doweld (2001), nom. cons. prop. [monotypic]
                   Genus †Spencerites D.H.Scott (1897)