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 Bacteroidota Krieg et al. 2021
                 Class Saprospiria Hahnke et al. 2018 [monotypic]
                   Order Saprospiralesᵀ Hahnke et al. 2017
                     Family Saprospiraceaeᵀ Krieg et al. 2012
                       1 Genus Aureispira Hosoya et al. 2006
                       2 Genus Membranihabitans Deshmukh and Oren 2022
                       3 Genus Saprospiraᵀ Gross 1911 (Approved Lists 1980) [monotypic]
                       4 Genus "Rubidimonas" Yoon et al. 2012 nom. inval.
                       5 Genus "Candidatus Aquirestis" Hahn and Schauer 2007 [monotypic]
                       6 Genus "Candidatus Epifloribacter" corrig. Xia et al. 2020
                       7 Genus "Candidatus Brachybacter" Kondrotaite et al. 2022 nom. pro-inval.
                       8 Genus "Candidatus Defluviibacterium" Kondrotaite et al. 2022 nom. pro-inval.
                       9 Genus "Candidatus Parvibacillus" Kondrotaite et al. 2022 nom. pro-inval.