[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 Methanosaeta concilii (Patel 1985) Patel and Sprott 1990 see Methanothrix soehngenii Huser et al. 1983