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 "Acaryochloridales" Strunecký and Mareš 2023 nom. inval.
                     Family Thermosynechococcaceae Komárek et al. 2020
                       1 Genus Parathermosynechococcus Tang et al. 2024
                       2 Genus Pseudocalidococcus Luz et al. 2023
                       3 Genus Thermosynechococcusᵀ Katoh et al. 2020
                       4 Genus "Stenotopis" Walter et al. 2017 nom. inval.