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 Fidelibacterota Katayama et al. 2024, incertae sedis [monotypic] Class Fidelibacteriaᵀ Katayama et al. 2024 [monotypic] 1 Order Fidelibacteralesᵀ Katayama et al. 2024 [monotypic]