[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryota
     Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990
       Subkingdom Negibacteria Cavalier-Smith 2002 - negibacteria see Domain Bacteria Woese et al. 1990
         Phylum Bacteroidetes Krieg et al. 2012
           1 Class Bacteroidia Krieg 2012 [monotypic]
           2 Class Cytophagia Nakagawa 2012 [monotypic]
           3 Class Flavobacteria Cavalier-Smith 2002 [monotypic] see Class Cytophagia Nakagawa 2012
           4 Class Sphingobacteriia Kämpfer 2012 [monotypic]