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 Oscillatoriales Schaffner (1922), sedis mutabilis] see Order Oscillatoriales Schaffner 1922
                     [Family Microcoleaceae Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014), nom. illeg.] see Family Microcoleaceae (Hansgirg 1888) Strunecký et al. 2013
                       [Genus Okeania N.Engene, V.J.Paul, T.Byrum, W.H.Gerwick, A.Thor & M.H.Ellisman (2013)] see Genus Okeania Engene et al. 2013