Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               [Phylum Cyanobacteria Garcia-Pichel et al. (2020)] see Phylum Cyanobacteriota Oren et al. 2022
                 [Class Cyanophyceae Hauck (1885)] see Class Chroococcophyceae Hollerbach et al. 1953
                   [Order Chroococcales Ardissone (1887)] see Order Chroococcales corrig. Ardissone 1887
                     [Family "Cyanobacteriaceae" Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014), nom. inval.] see Family Geminocystaceae Tuji, Yamaguchi & Niiyama (2021)
                       1 [Genus "Cyanobacterium"ᵀ Rippka & Cohen-Baz. (1983), nom. inval.] see Genus Cyanobacterium Rippka & Cohen-Baz. (2022)