prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Fusobacteria" Garrity and Holt 2012 [monotypic]
       Class Fusobacteriia Staley and Whitman 2012 [monotypic]
         Order Fusobacteriales Staley and Whitman 2012
           Family Leptotrichiaceae Staley and Whitman 2012
             1 Genus Leptotrichia Trevisan 1879 (Approved Lists 1980)
             2 Genus Sebaldella Collins and Shah 1986
             3 Genus Sneathia Collins et al. 2002
             4 Genus Streptobacillus Levaditi et al. 1925 (Approved Lists 1980)