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 Crenotrichaceae Hansgirg 1888 (Approved Lists 1980)
             1 Genus Crenothrix Cohn 1870 (Approved Lists 1980)
             2 Genus Chitinophaga Sangkhobol and Skerman 1981
             3 Genus Rhodothermus Alfredsson et al. 1995
             4 Genus Toxothrix Molisch 1925 (Approved Lists 1980)