Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Fibrobacteres-Chlorobi-Bacteroidetes (FCB) Gupta 2004
               Phylum Bacteroidetes Krieg et al. 2012
                 Class Bacteroidiaᵀ Krieg 2012 [monotypic]
                   Order Bacteroidalesᵀ Krieg 2012
                     Family Porphyromonadaceae Krieg 2012
                       Genus Butyricimonas Sakamoto et al. 2009
                         1 Butyricimonas faecihominis Sakamoto et al. 2014
                         2 Butyricimonas paravirosa Sakamoto et al. 2014
                         3 Butyricimonas synergistica Sakamoto et al. 2009
                         4 Butyricimonas virosa Sakamoto et al. 2009