[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 Rhodellophyceae Caval.-Sm. (1998)
               1 Order Dixoniellales Yokoyama, J.L.Scott, Zuccarello, M. Kajikawa, Y.Hara & J.A.West
               2 Order Glaucosphaerales Eun C.Yang, J.L.Scott, H.S. Yoon & J.A.West
               3 Order Rhodellales H.S. Yoon, K.M. Müller, Sheath, F.D. Ott & D. Bhattacharya