[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   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 "Bacteroidetes" see Class Bacteroidia
         Order "Bacteroidales" "Garrity and Holt 2001" nom. nud. see Order Bacteroidales Krieg 2012
           Family "Porphyromonadaceae" "Garrity and Holt 2001" nom. nud. see Family Porphyromonadaceae Krieg 2012
             Genus Porphyromonas Shah and Collins 1988
             Genus Oribaculum Moore and Moore 1994 see Genus Porphyromonas Shah and Collins 1988
             Genus Dysgonomonas Hofstad et al. 2000
             Genus Paludibacter Ueki et al. 2006
             Genus Proteiniphilum Chen and Dong 2005
             Genus Tannerella Sakamoto et al. 2002
             Genus Parabacteroides Sakamoto and Benno 2006
               1 Parabacteroides distasonis (Eggerth and Gagnon 1933) Sakamoto and Benno 2006
               2 Parabacteroides goldsteinii (Song et al. 2006) Sakamoto and Benno 2006
               3 Parabacteroides merdae (Johnson et al. 1986) Sakamoto and Benno 2006