Domain Bacteria Woese et al. 1990
   Phylum Chloroflexi Garrity and Holt 2001
     Class "Chloroflexi" Castenholz 2001 nom. inval. see Class Chloroflexia Gupta et al. 2013
       1 Order "Chloroflexales" Castenholz 2001 nom. nud. see Order Chloroflexales Gupta et al. 2013
       2 Order "Herpetosiphonales" Castenholz 2001 nom. nud. see Order Herpetosiphonales Gupta et al. 2013