Domain Bacteria Woese et al. 1990
   Phylum Actinobacteria Garrity and Holt 2001
     Class Actinobacteria Stackebrandt et al. 1997
       Subclass Acidimicrobidae Stackebrandt et al. 1997 see Class Acidimicrobiia Norris 2013
         1 Order Acidimicrobiales Stackebrandt et al. 1997