Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Bacteroidetes Garrity and Holt 2001 see Phylum Bacteroidetes Krieg et al. 2012
       Class "Bacteroidetes" Krieg et al., 2012 [monotypic] see Class Bacteroidia Krieg et al., 2012
         Order "Bacteroidales" Krieg 2012 see Order Bacteroidales Krieg 2012
           1 Family Bacteroidaceae Pribram 1933 (Approved Lists 1980)
           2 Family "Rikenellaceae" Krieg et al., 2012 see Family Rikenellaceae Krieg et al. 2012
           3 Family "Porphyromonadaceae" nom. inval. see Family Porphyromonadaceae Krieg 2012
           4 Family "Prevotellaceae" Krieg, 2012 [monotypic] see Family Prevotellaceae Krieg 2012