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 Archaea Woese et al. 2024 [paraphyletic]
               Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
                 Phylum Methanobacteriotaᵀ Garrity and Holt 2023
                   Class Halobacteria Grant et al. 2002
                     Order Halobacterialesᵀ Grant and Larsen 1989
                       Family Halobacteriaceaeᵀ Gibbons 1974 (Approved Lists 1980)
                         [Genus Halorubrobacterium Kamekura and Dyall-Smith 1996 nom. illeg.] see Genus Halorubrum McGenity and Grant 1996
                           [Halorubrobacterium lacusprofundi (Franzmann et al. 1989) Kamekura and Dyall-Smith 1996] see Halorubrum lacusprofundi (Franzmann et al. 1989) McGenity and Grant 1996