[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 Rhodellophytina Caval.-Sm. (1998)
             Class Stylonematophyceae H.S. Yoon, K.M. Müller, Sheath, F.D. Ott & D. Bhattacharya
               1 Order Rufusiales Zuccarello & J.A.West
               2 Order Stylonematales K.M.Drew (1956)