[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990
     Phylum "Euryarchaeota" Garrity and Holt 2001
       Class "Methanomicrobia"
         Order Methanosarcinales Boone et al. 2002
           Family Methanosaetaceae Boone et al. 2002 nom. illeg.
             Genus Methanosaeta Patel and Sprott 1990 nom. illeg. see Genus Methanothrix Huser et al. 1983
               1 Methanosaeta concilii (Patel 1985) Patel and Sprott 1990 see Methanothrix soehngenii Huser et al. 1983
               2 Methanosaeta harundinacea Ma et al. 2006
               3 Methanosaeta thermoacetophila (Nozhevnikova and Chudina 1988) Patel and Sprott 1990 see Methanothrix thermoacetophila corrig. Nozhevnikova and Chudina 1988
               4 "Methanosaeta thermophila" (Kamagata et al., 1992) Boone & Kamagata, 1998 see Methanosaeta thermophila (Kamagata et al. 1992) Boone and Kamagata 1998