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)
                       [Genus Anacystis G. Meneghini 1837] see Genus Synechococcus C. Nägeli (1849)
                       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)
                       06.2 [Family Hyellaceae Borzì (1914)] see Family Hydrococcaceae Kützing (1843)
                       07 Family Microcystaceae Elenkin (1933)
                       08 Family Prochloraceae R.A. Lewin (1977) [monotypic]
                       09 Family Spirulinaceae (Gomont) Hoffmann, Komárek & Kaštovský
                       09.0 [Subfamily Spirulinoideae A. Forti in G.B. De Toni 1907] see Family Spirulinaceae (Gomont) Hoffmann, Komárek & Kaštovský
                       10 Family Stichosiphonaceae Geitler
                       11 Family Xenococcaceae Ercegovic (1932)
                       2 [Family Tubiellaceae] see Family Synechococcaceae Komárek & Anagnostidis (1995)