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 Thermoplasmata Reysenbach 2002 Order "Candidatus Aciduliprofundales" Rinke et al. 2021 nom. pro-inval. [monotypic] Family "Candidatus Aciduliprofundaceae"ᵀ Rinke et al. 2021 nom. pro-inval. [monotypic] Genus "Candidatus Aciduliprofundum"ᵀ Reysenbach et al. 2020