Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005
       Class "Gammaproteobacteria" nom. inval. see Class Gammaproteobacteria Garrity et al. 2005
         Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
           Family Moraxellaceae Rossau et al. 1991
             1 Genus Moraxella Lwoff 1939 (Approved Lists 1980)
             2 Genus Acinetobacter Brisou and Prévot 1954 (Approved Lists 1980)
             3 Genus Psychrobacter Juni and Heym 1986