prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Gammaproteobacteria Garrity et al. 2005
         Order Chromatiales Imhoff 2005
           Family Ectothiorhodospiraceae Imhoff 1984
             01 Genus Acidihalobacter Cárdenas et al. 2015
             02 Genus Alkalilimnicola corrig. Yakimov et al. 2001
             03 Genus Alkalispirillum Rijkenberg et al. 2002 nom. inval. see Genus Alkalispirillum Rijkenberg et al. 2025
             04 Genus Aquisalimonas Márquez et al. 2007
             05 Genus Arhodomonas Adkins et al. 1993
             06 Genus Ectothiorhodosinus Gorlenko et al. 2007
             07 Genus Ectothiorhodospira Pelsh 1936 (Approved Lists 1980)
             08 Genus Halorhodospira Imhoff and Süling 1997
             09 Genus Natronocella Sorokin et al. 2007
             10 Genus Nitrococcus Watson and Waterbury 1971 (Approved Lists 1980)
             11 Genus Thioalbus Park et al. 2011
             12 Genus Thioalkalivibrio Sorokin et al. 2001
             13 Genus Thiogranum Mori et al. 2015
             14 Genus Thiohalospira Sorokin et al. 2008
             15 Genus Thiorhodospira Bryantseva et al. 1999