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 "Synechococcales" Hoffmann et al. 2005 nom. nud.
                     1 Genus Pseudoacaryochloris Mehda and Mateo 2023, incertae sedis
                     2 Genus Speos Panou and Gkelis 2022, incertae sedis
                     3? Family Petrachloraceae corrig. Soares et al. 2022 [monotypic]
                     4 Family Synechococcaceaeᵀ Komárek and Anagnostidis 1995
                     5 Family Prochlorococcaceae Komárek and Strunecký 2020
                     6 ?Family Schizotrichaceae Elenkin 1949
                     7 ?Family Heteroleibleiniaceae (Komárek and Anagnostidis 2005) Komárek et al. 2014 [monotypic]