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 Pseudomonadotaᵀ Garrity et al. 2021
                 Class Alphaproteobacteria Garrity et al. 2006
                   Order Holosporales Szokoli et al. 2020
                     Family Holosporaceaeᵀ Görtz and Schmidt 2006
                       01 Genus Holosporaᵀ (ex Hafkine 1890) Gromov and Ossipov 1981
                       02 Genus Pseudocaedibacter Quackenbush 1982
                       03 Genus Tectibacter (ex Preer et al. 1974) Preer and Preer 1982 [monotypic]
                       04 Genus "Candidatus Bealeia" Szokoli et al. 2020
                       05 Genus "Candidatus Cytomitobacter" Tashyreva et al. 2021
                       06 Genus "Candidatus Fujishimia" Boscaro et al. 2022
                       07 Genus "Candidatus Goertzia" corrig. Boscaro et al. 2020
                       08 Genus "Candidatus Hafkinia" Fokin et al. 2021
                       09 Genus "Candidatus Hepatobacter" Nunan et al. 2020
                       10 Genus "Candidatus Hydrogenosomobacter" Takeshita et al. 2021
                       11 Genus "Candidatus Ignotibacter" corrig. George et al. 2022
                       12 Genus "Candidatus Paraholospora" Eschbach et al. 2020
                       13 Genus "Candidatus Gromoviella" Castelli et al. 2022 nom. pro-inval.