Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990
   Subkingdom Negibacteria Cavalier-Smith 2002 - negibacteria see Domain Bacteria Woese et al. 1990
     Infrakingdom Eobacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990
       Division Eobacteria Cavalier-Smith 2002
         Class Chlorobacteria Cavalier-Smith 2002
           1 Genus Chloroflexus Pierson and Castenholz 1974 (Approved Lists 1980)
           2 Genus Heliothrix Pierson et al. 1986
           3 Genus Roseiflexus Hanada et al. 2002
           4 Genus Oscillochloris Gorlenko and Pivovarova 1989
           5 Genus Thermomicrobium Jackson et al. 1973 (Approved Lists 1980)
           6 Genus Herpetosiphon Holt and Lewin 1968 (Approved Lists 1980)
           7 Genus Thermoleiophilum see Genus Thermoleophilum Zarilla and Perry 1986
           8 Genus Dehalococcoides nom. inval. see Genus Dehalococcoides Löffler et al. 2013
           9 Order Chloroflexales Castenholz 2001 nom. nud. see Order Chloroflexales Gupta et al. 2013