[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     Phylum "Euryarchaeota" Garrity and Holt 2002 stat. inval. see Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
       Class "Methanomicrobia" Garrity et al. 2005 nom. inval.
         Order Methanosarcinales Boone et al. 2002
           Family Methanosaetaceae Boone et al. 2002 nom. illeg. see Family Methanotrichaceae Akinyemi et al. 2021
             1 Genus Methanosaeta Patel and Sprott 1990 nom. illeg. see Genus Methanothrix Huser et al. 1983
             2 Genus Methanothrix Huser et al. 1983