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 Verrucomicrobiota Hedlund 2021
                 Order Methylacidiphilales Awala et al. 2023 nom. illeg., incertae sedis [monotypic]
                   Family Methylacidiphilaceaeᵀ Awala et al. 2023 nom. illeg.
                     1 Genus Methylacidiphilumᵀ Awala et al. 2023 nom. illeg.
                     2 Genus Methylacidiphilum Ratnadevi et al. 2023
                     3 Genus "Methylacidimicrobium" van Teeseling et al. 2014 nom. inval.
                     4 Genus "Candidatus Methylacidiphilum" Hou et al. 2020
                     5 Genus "Candidatus Methylacidithermus" Picone et al. 2022