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 Coriobacteriia König 2013
                   Order Coriobacterialesᵀ Stackebrandt et al. 1997 [monotypic]
                     Suborder "Coriobacterineae"ᵀ Garrity & Holt, 2001 [monotypic]
                       Family Atopobiaceae Gupta et al. 2013
                         Genus Olsenella Dewhirst et al. 2001
                           Olsenella umbonata Kraatz et al. 2011