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 Gammaproteobacteria Garrity et al. 2005
         Order Aeromonadales Martin-Carnahan and Joseph 2005
           1 Family Aeromonadaceae Colwell et al. 1986
           2 Family Succinivibrionaceae Hippe et al. 1999