Domain Bacteria Woese et al. 1990
   Phylum Actinobacteria Garrity and Holt 2001
     Class Actinobacteria Stackebrandt et al. 1997
       Subclass Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997
         Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
           Suborder Propionibacterineae Rainey et al. 1997
             Family Propionibacteriaceae Delwiche 1957 (Approved Lists 1980)
               Genus Luteococcus Tamura et al. 1994
               Genus Microlunatus Nakamura et al. 1995
               Genus Propioniferax Yokota et al. 1994
               Genus Tessaracoccus Maszenan et al. 1999
               1 Genus Propionibacterium Orla-Jensen 1909 (Approved Lists 1980)