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
                     Genus Leptotrichiaᵀ Trevisan 1879 (Approved Lists 1980)
                       1 Leptotrichia buccalisᵀ (Robin 1853) Trevisan 1879 (Approved Lists 1980)
                       2 Leptotrichia goodfellowii Eribe et al. 2004
                       3 Leptotrichia hofstadii Eribe et al. 2004
                       4 Leptotrichia hongkongensis Woo et al. 2011
                       5 Leptotrichia shahii Eribe et al. 2004
                       6 Leptotrichia trevisanii Tee et al. 2002
                       7 Leptotrichia wadei Eribe et al. 2004