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 Phylum Vulcanimicrobiota Yabe et al. 2024, incertae sedis Class "Candidatus Xenobiia" corrig. Ji et al. 2022 [monotypic] Order "Candidatus Xenobiales"ᵀ Ji et al. 2022 [monotypic] Family "Candidatus Xenobiaceae"ᵀ Ji et al. 2022 Genus "Candidatus Xenobium"ᵀ Ji et al. 2022