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 Methanosarcinia Chuvochina et al. 2024
                     Order Methanosarcinalesᵀ Boone et al. 2002
                       [Family Methanosaetaceae Boone et al. 2002 nom. illeg. [monotypic]] see Family Methanotrichaceae Akinyemi et al. 2021
                         1.0 [Genus Methanosaetaᵀ Patel and Sprott 1990 nom. illeg.] see Genus Methanothrix Huser et al. 1983