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 Micrococcales Prévot 1940 (Approved Lists 1980)
                     Family Promicromonosporaceae Rainey et al. 1997
                       1 Genus Promicromonosporaᵀ Krasil'nikov et al. 1961 (Approved Lists 1980)
                       2.1 Genus Cellulosimicrobium Schumann et al. 2001
                       2.2 Genus Isoptericola Stackebrandt et al. 2004
                       3 Genus Myceligenerans Cui et al. 2004
                       4 Genus Xylanibacterium Rivas et al. 2004 [monotypic]
                       5 Genus Xylanimicrobium Stackebrandt and Schumann 2004 [monotypic]
                       6 Genus Xylanimonas Rivas et al. 2003 [monotypic]