[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
             Genus Rikenella Collins et al. 1985
               Rikenella microfusus (Kaneuchi and Mitsuoka 1978) Collins et al. 1985