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 Synechococcophycideae
                     Order Synechococcalesᵀ
                       Family Merismopediaceae Elenkin (1933)
                         1 Genus Paracapsa E. Naumann (1924)
                         2 Genus Eucapsis F.E. Clements & H.L. Shantz (1909)
                         3.1 Genus Coelomoron Buell (1938)
                         3.2 Genus Coelosphaeriopsis Lemmerm. (1899)
                         3.3 Genus Coelosphaerium C. Nägeli (1849)
                         3.4 Genus Siphonosphaera Hindák (1988)
                         4.1 Genus Aphanocapsa Nägeli (1849)
                         4.2 Genus Coccopedia O.V. Troitzkaja (1922)
                         4.3 Genus Cyanotetras F. Hindák 1988
                         4.4 Genus Mantellum P.A. Dangeard (1941)
                         4.5 Genus Merismopediaᵀ F.J.P. Meyen (1839)
                         4.6 Genus Synechocystis C. Sauvageau 1892 [ICBN]
                         5.1 Genus Lithococcus Ercegovic (1925)
                         5.2 Genus Lithomyxa M.A. Howe (1932)