[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       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