prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Bacteroidetes" Krieg et al. 2012 stat. inval. see Phylum Bacteroidota Krieg et al. 2021
       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