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 "Deltaproteobacteria" Kuever et al., 2006 [polyphyletic]
               Class Deltaproteobacteriaᵀ Kuever et al. 2006
                 Order Desulfuromonadales corrig. Kuever et al. 2006
                   Family Geobacteraceae Holmes et al. 2004
                     1 Genus Geoalkalibacter Zavarzina et al. 2007
                     2 Genus Geobacterᵀ Lovley et al. 1995
                     3 Genus Geopsychrobacter Holmes et al. 2005 [monotypic]
                     4 Genus Geothermobacter Kashefi et al. 2005 [monotypic]