[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 "Rikenellaceae" "Garrity and Holt 2001" nom. nud. see Family Rikenellaceae Krieg et al. 2012
             1 Genus Rikenella Collins et al. 1985
             2 Genus Alistipes Rautio et al. 2003
             3 Genus Alkaliflexus Zhilina et al. 2005
             4 Genus Marinilabilia Nakagawa and Yamasato 1996
             5 Genus Petrimonas Grabowski et al. 2005