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 Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
                 Phylum Methanobacteriotaᵀ Garrity and Holt 2023
                   Class Archaeoglobi Garrity and Holt 2002
                     Order "Candidatus Mnemosynellales" Adam et al. 2022 nom. pro-inval. [monotypic]
                       Family "Candidatus Mnemosynellaceae"ᵀ Adam et al. 2022 nom. pro-inval. [monotypic]
                         Genus "Candidatus Mnemosynella"ᵀ Adam et al. 2022 nom. pro-inval.