[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 Pseudonocardineae Stackebrandt et al. 1997
               Family Pseudonocardiaceae Embley et al. 1989
                 Genus Pseudonocardia Henssen 1957 (Approved Lists 1980)
                   Pseudonocardia petroleophila (Hirsch and Engel 1956) Warwick et al. 1994