[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   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 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 see Family Prevotellaceae Krieg 2012
           5 Genus Acetofilamentum Dietrich et al. 1989
           6 Genus Acetomicrobium Soutschek et al. 1985
           7 Genus Acetothermus Dietrich et al. 1988