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)
                       Family "Cyanobacteriaceae" Hoffmann, Komárek & Kaštovský (2005)
                         Genus Aphanothece C. Nägeli 1849 nom. cons.
                           [Aphanothece nidulans sensu G.M. Sm. (1920)] see Aphanothece smithii Komárková-Legnerová & Cronberg (1994)