Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Phylum Fusobacteria Garrity and Holt 2012 [monotypic]
               Class Fusobacteriiaᵀ Staley and Whitman 2012 [monotypic]
                 Order Fusobacterialesᵀ Staley and Whitman 2012
                   Family Leptotrichiaceae Staley and Whitman 2012
                     1 Genus Leptotrichiaᵀ Trevisan 1879 (Approved Lists 1980)
                     2 Genus Sebaldella Collins and Shah 1986 [monotypic]
                     3 Genus Streptobacillus Levaditi et al. 1925 (Approved Lists 1980) [monotypic]
                     4 Genus Sneathia Collins et al. 2002 [monotypic]