Phylum Chloroflexi Garrity and Holt 2001
   Thermomicrobia Garrity and Holt 2001 see Class Thermomicrobia Garrity and Holt 2002
     1 Genus Sphaerobacter Demharter et al. 1989
     2 Genus Thermomicrobium Jackson et al. 1973 (Approved Lists 1980)