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 Cyanobacteriota Oren et al. 2022
                 Class Chroococcophyceaeᵀ Hollerbach et al. 1953
                   Order Oscillatoriales Schaffner 1922, sedis mutabilis
                     01 Genus Atractella Printz 1921, incertae sedis
                     02 Genus Hillbrichtia Jasser et al. 2022, incertae sedis
                     03 Genus Olisthonema Panou and Gkelis 2022, incertae sedis
                     04 Genus "Marsacia" Brown et al. 2010 nom. inval., incertae sedis
                     05 Family †Garwoodiaceae Endo 1961
                     06 Family †Girvanellaceae Luchinina 1975
                     07 Family Oscillatoriaceaeᵀ Engler 1898 nom. cons.
                     08 Family Microcoleaceae (Hansgirg 1888) Strunecký et al. 2013
                     09 ?Family Borziaceae Borzì 1914 [monotypic]
                     10 ?Family Aerosakkonemataceae Strunecký and Mareš 2023