Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Bacteroidetes Garrity and Holt 2001 see Phylum Bacteroidetes Krieg et al. 2012
       Class "Sphingobacteria" [monotypic] see Class Sphingobacteriia Kämpfer 2012
         Order "Sphingobacteriales" Kämpfer, 2012 see Order Sphingobacteriales Kämpfer 2012
           Family "Flexibacteraceae" see Family Cytophagaceae Stanier 1940 (Approved Lists 1980)
             Genus Runella Larkin and Williams 1978 (Approved Lists 1980)