Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Actinobacteria Garrity and Holt 2001 [monotypic] Class Actinobacteria Stackebrandt et al. 1997 Subclass Rubrobacteridae Rainey et al. 1997 [monotypic] see Class Rubrobacteria Suzuki 2013 Order Rubrobacterales Rainey et al. 1997 [monotypic] 1 Suborder "Rubrobacterineae" Garrity & Holt, 2001 [monotypic]