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]
           Clade neomura Cavalier-Smith, 1987
             Domain Archaea Woese et al. 2024 [paraphyletic]
               Kingdom Nanobdellati Rinke et al. 2024
                 Phylum "Candidatus Micrarchaeota" Baker and Dick 2023
                   Class "Candidatus Micrarchaeia"ᵀ Vazquez-Campos et al. 2021 nom. pro-inval.
                     Order "Candidatus Anstonellales" Vazquez-Campos et al. 2021 nom. pro-inval.
                       Family "Candidatus Anstonellaceae"ᵀ Vazquez-Campos et al. 2021 nom. pro-inval. [monotypic]
                         1 Genus "Candidatus Anstonella"ᵀ Vazquez-Campos et al. 2021 nom. pro-inval.