Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Gammaproteobacteria" Garrity et al., 2005 [monotypic]
                 Class Gammaproteobacteriaᵀ Garrity et al. 2005
                   Order Oceanospirillales Garrity et al. 2005
                     Family Oceanospirillaceaeᵀ Garrity et al. 2005
                       Genus Litoribrevibacter Li et al. 2015
                       Genus Oceanospirillumᵀ Hylemon et al. 1973 (Approved Lists 1980)
                       Genus Amphritea Gärtner et al. 2008
                       Genus Balneatrix Dauga et al. 1993 [monotypic]
                       Genus Bermanella Pinhassi et al. 2009 [monotypic]
                       Genus Corallomonas Chen et al. 2013 [monotypic]
                       Genus Marinomonas van Landschoot and De Ley 1984
                       Genus Marinospirillum Satomi et al. 1998
                       Genus Neptuniibacter Arahal et al. 2007
                       Genus Neptunomonas Hedlund et al. 1999
                       Genus Oceaniserpentilla Schlösser et al. 2008 [monotypic]
                       Genus Oceanobacter Satomi et al. 2002 [monotypic]
                       Genus Oleibacter Teramoto et al. 2011 [monotypic]
                       Genus Oleispira Yakimov et al. 2003
                       Genus Pseudospirillum Satomi et al. 2002 [monotypic]
                       Genus Reinekea Romanenko et al. 2004
                       Genus Thalassolituus Yakimov et al. 2004 [monotypic]
                       Genus Nitrincola Dimitriu et al. 2005 [monotypic]
                         1 Nitrincola lacisaponensisᵀ Dimitriu et al. 2005