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 Chamaesiphonaceae Borzì (1882)
                         1 Genus Chamaesiphonᵀ A.Braun in L. Rabenh. 1865 [ICBN]
                         2 Genus Clastidium O. Kirchner (1880)
                         3 Genus Cyanophanon L. Geitler (1955)
                         4 Genus Geitleribactron J. Komárek (1975)