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 Gomontiellales Strunecký and Mareš 2023, sedis mutabilis
                     Family Gomontiellaceaeᵀ Elenkin ex Geitler 1942
                       1 Genus Crinalium Crow 1927
                       2 Genus Filarszkya Forti 1907
                       3 Genus Gomontiellaᵀ Teodoresco 1901
                       4 Genus Hormoscilla Anagnostidis and Komárek 1988
                       5 Genus Katagnymene Lemmermann 1899
                       6 Genus Komvophoron Anagnostidis and Komárek 1988
                       7 Genus Starria Lang 1977