Class "Gammaproteobacteria" nom. inval. see Class Gammaproteobacteria Garrity et al. 2005
   Family Alteromonadaceae Ivanova and Mikhailov 2001
     1 Genus Alteromonas Baumann et al. 1972 (Approved Lists 1980)
     2 Genus Glaciecola Bowman et al. 1998