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 Deferribacteres Garrity and Holt 2001 [monotypic]
               Class Deferribacteres Huber and Stetter 2002 [monotypic]
                 Order Deferribacteralesᵀ Huber and Stetter 2002 [monotypic]
                   Family Deferribacteraceaeᵀ Huber and Stetter 2002
                     1 Genus Calditerrivibrio Iino et al. 2008 [monotypic]
                     2 Genus Deferribacterᵀ Greene et al. 1997
                     3 Genus Denitrovibrio Myhr and Torsvik 2000 [monotypic]
                     4 Genus Flexistipes Fiala et al. 2000 [monotypic]
                     5 Genus Geovibrio Caccavo et al. 2000
                     6 Genus Mucispirillum Robertson et al. 2005 [monotypic]
                     7 Genus Seleniivibrio Rauschenbach et al. 2013