Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum "Actinobacteria" Garrity and Holt 2001
                 Class Actinobacteriaᵀ Stackebrandt et al. 1997
                   Order Actinomycetalesᵀ Buchanan 1917 (Approved Lists 1980)
                     Suborder Actinomycineaeᵀ Stackebrandt et al. 1997 [monotypic]
                       Family Actinomycetaceaeᵀ Buchanan 1918 (Approved Lists 1980)
                         Genus Actinobaculum Lawson et al. 1997
                           1 Actinobaculum massiliense corrig. Greub and Raoult 2006
                           2 Actinobaculum schaalii Lawson et al. 1997
                           3 Actinobaculum suis (Wegienek and Reddy 1982) Lawson et al. 1997
                           4 Actinobaculum urinale Hall et al. 2003
                           5 "Actinobaculum timonae" Drancourt et al. 2004