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)
                     Family Bacillaceae Fischer 1895 (Approved Lists 1980)
                       Genus Fictibacillus Glaeser et al. 2013
                         1 Fictibacillus arsenicus (Shivaji et al. 2005) Glaeser et al. 2013
                         2 Fictibacillus barbaricus (Täubel et al. 2003) Glaeser et al. 2013
                         3 Fictibacillus enclensis Dastager et al. 2014
                         4 Fictibacillus gelatini (De Clerck et al. 2004) Glaeser et al. 2013
                         5 Fictibacillus macauensis (Zhang et al. 2006) Glaeser et al. 2013
                         6 Fictibacillus nanhaiensis (Chen et al. 2011) Glaeser et al. 2013
                         7 Fictibacillus phosphorivorans Glaeser et al. 2013
                         8 Fictibacillus rigui (Baik et al. 2010) Glaeser et al. 2013
                         9 Fictibacillus solisalsi (Liu et al. 2009) Glaeser et al. 2013