[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   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 Actinomycineae Stackebrandt et al. 1997
               Family Actinomycetaceae Buchanan 1918 (Approved Lists 1980)
                 Genus Actinomyces Harz 1877 (Approved Lists 1980)
                   Actinomyces ruminicola An et al. 2006