procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Bacteroidetes Garrity and Holt 2001 nom. inval. see Phylum Bacteroidetes Krieg et al. 2012 stat. inval.
       Class "Bacteroides" "Garrity and Holt 2001" nom. nud. [monotypic] see Class Bacteroidia
         Order "Bacteroidales" "Garrity and Holt 2001" nom. nud. see Order Bacteroidales Krieg 2012
           Family "Porphyromonadaceae" "Garrity and Holt 2001" nom. nud. [monotypic] see Family Porphyromonadaceae Krieg 2012
             Genus Porphyromonas Shah and Collins 1988