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] Domain Bacteria Woese et al. 2024 Kingdom Thermotogati Battistuzzi and Hedges 2024 Phylum "Candidatus Acetithermota" corrig. Rinke et al. 2023 [monotypic] Class "Candidatus Acetithermia"ᵀ corrig. "Mullin et al. 2020" nom. pro-inval. [monotypic] Genus "Candidatus Acetithermum"ᵀ corrig. Takami et al. 2020 [monotypic] 1 "Candidatus Acetithermum autotrophicum"ᵀ corrig. Takami et al. 2020