living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
       Division Bacteria (Haeckel 1894) see Domain Bacteria Woese et al. 1990
         "Gram-negative aerobic rods and cocci"
           Family Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980)
           Family Azotobacteraceae Pribram 1933 (Approved Lists 1980) see Family Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980)
           Family Rhizobiaceae Conn 1938 (Approved Lists 1980)
           Family Methylmonadaceae see Family Methylococcaceae Whittenbury and Krieg 1984
           Family Halobacteriaceae Gibbons 1974 (Approved Lists 1980)
             1 Genus Halobacterium Elazari-Volcani 1957 (Approved Lists 1980)
             2 Genus Halococcus Schoop 1935 (Approved Lists 1980)