prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Bacteroidetes" Krieg et al. 2012
       Class Sphingobacteriia Kämpfer 2012 [monotypic]
         Order Sphingobacteriales Kämpfer 2012
           1 Family Balneolaceae Xia et al. 2016 [monotypic]
           2 Family Chitinophagaceae Kämpfer et al. 2011
           3 Family Filobacteriaceae Ike et al. 2016 [monotypic]
           4 Family Saprospiraceae Krieg et al. 2012
           5 Family Sphingobacteriaceae Steyn et al. 1998
           6 Genus Fodinibius Wang et al. 2012, incertae sedis