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 Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Bacillotaᵀ Gibbons and Murray 2021
                 Class Bacilliᵀ Ludwig et al. 2010
                   Order Caryophanalesᵀ Peshkoff 1939 (Approved Lists 1980)
                     01 Genus "Candidatus Harrysmithiimonas" corrig. Glendinning et al. 2022, incertae sedis
                     02 Family Alicyclobacillaceae da Costa and Rainey 2010
                     03 Family Bacillaceae Fischer 1895 (Approved Lists 1980)
                     04 Family Caryophanaceaeᵀ Peshkoff 1939 (Approved Lists 1980)
                     05 Family Cytobacillaceae Li et al. 2024
                     06 Family Desulfuribacillaceae Sorokin et al. 2021 [monotypic]
                     07 Family Gemellaceae Chuvochina et al. 2024 [monotypic]
                     08 Family Listeriaceae Ludwig et al. 2010
                     09 Family Paenibacillaceae De Vos et al. 2010
                     10 Family Pasteuriaceae Laurent 1890 (Approved Lists 1980) [monotypic]
                     11 Family Sporolactobacillaceae Ludwig et al. 2010
                     12 Family Staphylococcaceae Schleifer and Bell 2010
                     13 Family Thermicanaceae Chuvochina et al. 2024
                     14 Family Thermoactinomycetaceae Matsuo et al. 2006