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
                       01 Genus Petrimonas Grabowski et al. 2005 [monotypic]
                       02 Genus Porphyromonasᵀ Shah and Collins 1988
                       03.1 Genus Barnesiella Sakamoto et al. 2007
                       03.2 Genus Coprobacter Shkoporov et al. 2013 [monotypic]
                       04 Genus Butyricimonas Sakamoto et al. 2009
                       05 Genus Dysgonomonas Hofstad et al. 2000
                       06 Genus Falsiporphyromonas Wagener et al. 2014 [monotypic]
                       07 Genus Macellibacteroides Jabari et al. 2012 [monotypic]
                       08 Genus Odoribacter Hardham et al. 2008
                       09.1 Genus Paludibacter Ueki et al. 2006 [monotypic]
                       09.2 Genus Microbacter Sánchez et al. 2014 [monotypic]
                       10 Genus Parabacteroides Sakamoto and Benno 2006
                       11 Genus Proteiniphilum Chen and Dong 2005 [monotypic]
                       12 Genus Tannerella Sakamoto et al. 2002 [monotypic]