[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Deltaproteobacteria Kuever et al. 2006
         Order Desulfobacterales Kuever et al. 2006
           1 Family Desulfobacteraceae Kuever et al. 2006
           2 Family Desulfobulbaceae Kuever et al. 2006
           3 Family Nitrospinaceae Garrity et al. 2006