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 Natrialbaceae Gupta et al. 2015
                         Genus Natronorubrum Xu et al. 1999
                           1 Natronorubrum aibiense Cui et al. 2006
                           2 Natronorubrum bangense Xu et al. 1999
                           3 Natronorubrum sediminis Gutiérrez et al. 2010
                           4 Natronorubrum sulfidifaciens Cui et al. 2007
                           5 Natronorubrum texcoconense Ruiz-Romero et al. 2013
                           6 Natronorubrum tibetense Xu et al. 1999