prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Chloroflexi" Garrity and Holt 2001
       1 Class Anaerolineae Yamada et al. 2006 [monotypic]
       2 Class Ardenticatenia Kawaichi et al. 2013 [monotypic]
       3 Class Caldilineae Yamada et al. 2006 [monotypic]
       4 Class Chloroflexia Gupta et al. 2013
       5 Class Ktedonobacteria corrig. Cavaletti et al. 2007
       6 Class Thermoflexia Dodsworth et al. 2014 [monotypic]
       7 Class Thermomicrobia Garrity and Holt 2002 [monotypic]