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 Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
                 Class "Cyanobacteria" Cavalier-Smith, 2002
                   Subclass Oscillatoriophycideae
                     Order Chroococcales Wettst. (1924)
                       Family Xenococcaceae Ercegovic (1932)
                         1 Genus Chroococcidiopsis L. Geitler 1933 [ICBN]
                         2 Genus Chroococcopsis L. Geitler (1925)
                         3 Genus Epilithia A. Ercegovic (1932)
                         4 Genus Myxosarcina H. Printz 1921 [ICBN]
                         5 Genus Xenococcusᵀ G. Thuret in É. Bornet & G. Thuret 1880 [ICBN]
                         6 Genus Xenotholos Gold-Morgan et al. (1994)