prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class Rubrobacteria Suzuki 2013
         Order Solirubrobacterales Reddy and Garcia-Pichel 2009
           1 Family Conexibacteraceae Stackebrandt 2005 [monotypic]
           2 Family Patulibacteraceae Takahashi et al. 2006 [monotypic]
           3 Family Solirubrobacteraceae Stackebrandt 2005 [monotypic]