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 Fusobacteriaceaeᵀ Staley and Whitman 2012
                     1 Genus Psychrilyobacter Zhao et al. 2009 [monotypic]
                     2 Genus Cetobacterium Foster et al. 1996
                     3 Genus Fusobacteriumᵀ Knorr 1922 (Approved Lists 1980)
                     4 Genus Ilyobacter Stieb and Schink 1985
                     5 Genus Propionigenium Schink and Pfennig 1983