Class Proteobacteria Stackebrandt et al. 1988 nom. rej. see Phylum Proteobacteria Garrity and Holt 2001 nom. nud.
   Subclass gamma see Class Gammaproteobacteria "Garrity and Holt 2001" nom. nud.
     Family Alteromonadaceae Ivanova and Mikhailov 2001
       Genus Colwellia Deming et al. 1988
         Colwellia psychrerythraea corrig. (ex D'Aoust and Kushner 1972) Deming et al. 1988