Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Plantae Haeckel (1866) - plants
                           Clade Rhodaria Cavalier-Smith 2021
                             Subkingdom Rhodoplantae G.W.Saunders & Hommers. (2004) [monotypic]
                               Phylum Rhodophyta Wettst. (1901) - red algae
                                 Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004)
                                   Class Florideophyceae Cronquist (1960)
                                     Subclass Corallinophycidae L.Le Gall & G.W.Saunders (2007)
                                       Order Corallinalesᵀ P.C.Silva & H.W.Johans. (1986)
                                         Family Corallinaceaeᵀ Lamouroux (1816)
                                           Subfamily Austrolithoideae Harvey & Woelkerling (1995)
                                             Genus Austrolithonᵀ A.S. Harvey & Woelkerling (1995) [monotypic]
                                               Austrolithon intumescensᵀ A.S. Harvey & Woelkerling