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 Hydrothermota" corrig. Jungbluth et al. 2023, incertae sedis Class "Candidatus Hydrothermia"ᵀ Chuvochina et al. 2019 nom. nud. [monotypic] 1 Order "Candidatus Hydrothermales"ᵀ Chuvochina et al. 2019 nom. nud. [monotypic]