prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   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 Bdellovibrionales Garrity et al. 2006
           1 Family Bacteriovoracaceae Davidov and Jurkevitch 2004
           2 Family Bdellovibrionaceae Garrity et al. 2006
           3 Family Halobacteriovoraceae Koval et al. 2015 [monotypic]
           4 Family Pseudobacteriovoracaceae McCauley et al. 2015 [monotypic]