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
                   1 Family †Aphralysiaceae Vachard et al. (2001)
                   2 Subclass Gloeobacterophycideae (Cavalier-Sm. 1998 ex Cavalier-Sm. 2002)
                   3.1.1 Subclass Oscillatoriophycideae
                   3.1.2 Subclass Synechococcophycideae
                   3.2 Subclass Nostocophycideae