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 [Family "Family 1.1" nom. inval.]
                   2 Subclass Gloeobacterophycideae (Cavalier-Sm. 1998 ex Cavalier-Sm. 2002)
                   2.0 [Subsection I] see Family Family 1.1 nom. inval.
                   3.0 [Subsection II]
                   3.1 [Family "Family 2.1" nom. inval.]
                   3.1.1 Subclass Oscillatoriophycideae
                   3.1.1.1 [Order Prochlorales (ex Lewin 1977) Florenzano et al. 1986] see Order Chroococcales Cavalier-Smith 2002
                   3.1.2 Subclass Synechococcophycideae
                   3.2 [Family "Family 2.2" nom. inval.]
                   3.2 Subclass Nostocophycideae
                   4 [Family "Family 3.1" nom. inval.]
                   4.0 [Subsection III] see Family Family 3.1 nom. inval.
                   5.0 [Subsection IV]
                   5.1 [Family "Family 4.1" nom. inval.]
                   5.2 [Family "Family 4.2" nom. inval.]
                   6 [Family Subsection 5.1 nom. inval.]
                   6.0 [Subsection V]