Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Bryobiotina Campb. (1890)
     Division Anthocerotophyta Stotler & Crand.-Stotl. (1977) see Phylum Anthocerotophyta Stotler & Crand.-Stotl. (1977)
       Class Anthocerotopsida Jancz. (1872) - hornworts
         Subclass Dendrocerotidae Duff, J.C. Villarreal, Cargill & Renzaglia
           Order Dendrocerotales Hässel [monotypic]
             Family Dendrocerotaceae J. Haseg. (1988)
               Subfamily Phaeomegacerotoideae Duff, J.C. Villarreal, Cargill & Renzaglia [monotypic]
                 Genus Phaeomegaceros Duff, J.C. Villarreal, Cargill & Renzaglia