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)
                         Genus Coelosphaerium C. Nägeli (1849)
                           Coelosphaerium aerugineum Lemmermann 1898
                           Coelosphaerium dubium A. Grunow in L. Rabenhorst 1865
                           Coelosphaerium kuetzingianum Nägeli 1849
                           Coelosphaerium limnicolum Lund 1942
                           Coelosphaerium minutissimum Lemmermann 1900
                           Coelosphaerium punctiferum Komárek and Komárková-Legnerová 1992