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. 1990 stat. inval. [paraphyletic?]] see Domain Bacteria Woese et al. 2024
             [Phylum Cyanobacteria "Stanier (1974)"] see Phylum Cyanobacteriota Oren et al. 2022
               [Class "Cyanobacteria" "Stanier (1974)", nom. inval. - cyanoprokaryotes] see Class Cyanophyceae Hauck (1885)
                 [Order Pleurocapsales Geitler (1925)] see Order Chroococcales Ardissone (1887)
                   [Family Siphononemataceae] see Subfamily Siphononematoideae