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 Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Nitrospinota Lücker et al. 2021
                 1 Genus "Candidatus Nitromaritima" Ngugi et al. 2020, incertae sedis
                 2 Genus "Candidatus Nitrohalomicrobium" Galisteo et al. 2026 nom. pro-inval., incertae sedis
                 3 Class Nitrospiniaᵀ Lücker et al. 2022 [monotypic]