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)
                       01 Family Chroococcaceaeᵀ Nägeli (1849)
                       02 Family "Cyanobacteriaceae" Hoffmann, Komárek & Kaštovský (2005)
                       03 Family Dermocarpellaceae F. Ginsburg-Ardré ex T. Christensen (1980)
                       04 Family Entophysalidaceae Geitler (1925)
                       05 Family Gomphosphaeriaceae Elenkin (1933)
                       06 Family Hydrococcaceae Kützing (1843)
                       07 Family Microcystaceae Elenkin (1933)
                       08 Family Prochloraceae R.A. Lewin (1977) [monotypic]
                       09 Family Spirulinaceae (Gomont) Hoffmann, Komárek & Kaštovský
                       10 Family Stichosiphonaceae Geitler
                       11 Family Xenococcaceae Ercegovic (1932)