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 "Candidatus Kryptoniota" corrig. Eloe-Fadrosh et al. 2023, incertae sedis Family "Candidatus Kryptoniaceae"ᵀ Ehrhardt et al. 2022 nom. pro-inval. [monotypic] 1 Genus "Candidatus Kryptonium"ᵀ Eloe-Fadrosh et al. 2020