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 Genus Fusobacteriumᵀ Knorr 1922 (Approved Lists 1980) Fusobacterium nucleatumᵀ Knorr 1922 (Approved Lists 1980) Fusobacterium nucleatum subsp. polymorphum (ex Knorr 1922) Dzink et al. 1990