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
                   Family †Trichostromataceae Vologdin 1962 nom. illeg., incertae sedis
                     01 Genus †Alternia Vologdin 1962
                     02 Genus †Antiquophytolithus Vologdin 1962
                     03 Genus †Arenarina Vologdin 1962
                     04 Genus †Caudomorpha Vologdin 1962
                     05 Genus †Chomentovskia Vologdin 1962
                     06 Genus †Digitularia Vologdin 1962
                     07 Genus †Fibrostroma Vologdin 1962
                     08 Genus †Flexia Vologdin 1962
                     09 Genus †Leptotrichomaria Vologdin 1962
                     10 Genus †Nemaphycus Korde 1954
                     11 Genus †Praearenaria Vologdin 1962
                     12 Genus †Trichostromaᵀ Vologdin 1962 nom. illeg.