[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryota Whittaker & Margulis, 1978 see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Biliphyta Caval.-Sm. (1981) - red algae and glaucophytes see Kingdom Plantae Haeckel (1866)
         Phylum Rhodophyta Wettst. (1901) - red algae
           Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004)
             Class Florideophyceae Cronquist (1960)
               Subclass Rhodymeniophycidae G.W.Saunders & Hommers. (2004)
                 01 Order Acrosymphytales R.D. Withall & G.W.Saunders
                 02 Order Bonnemaisoniales Feldmann & Feldm.-Maz. (1942)
                 03 Order Ceramiales Oltmanns
                 04 Order Gelidiales Kylin
                 05 Order Gigartinales F.Schmitz
                 06 Order Gracilariales Fredericq & Hommers.
                 07 Order Halymeniales G.W.Saunders & Kraft
                 08 Order Nemastomatales Kylin
                 09 Order Peyssonneliales Krayesky, Fredericq & J.N.Norris
                 10 Order Plocamiales G.W.Saunders & Kraft
                 11 Order Rhodymeniales F.Schmitz (1892)
                 12 Order Sebdeniales R.D. Withall & G.W.Saunders