Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005 Class "Deltaproteobacteria" Garrity et al. 2001 nom. ined. see Class Deltaproteobacteria Kuever et al. 2006 1 Order "Desulfurellales" Garrity et al. 2001 nom. ined. [monotypic] see Order Desulfurellales Kuever et al. 2006 2 Order "Desulfovibrionales" Garrity et al. 2001 nom. ined. see Order Desulfovibrionales Kuever et al. 2006 3 Order "Desulfobacterales" Garrity et al. 2001 nom. ined. see Order Desulfobacterales Kuever et al. 2006 4 Order "Desulfuromonadales" nom. inval. see Order Desulfuromonadales corrig. Kuever et al. 2006 5 Order "Syntrophobacterales" see Order Syntrophobacterales Kuever et al. 2006 6 Order "Bdellovibrionales" [monotypic] see Order Bdellovibrionales Garrity et al. 2006 7 Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)