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 Cyanobacteria Garcia-Pichel et al. (2020)] see Phylum Cyanobacteriota Oren et al. 2022 [Class Cyanophyceae Hauck (1885)] see Class Chroococcophyceae Hollerbach et al. 1953 [Order Gomontiellales Strunecký & Mareš (2023), sedis mutabilis] see Order Gomontiellales Strunecký and Mareš 2023 [Family Gomontiellaceaeᵀ Elenkin ex Geitler (1942)] see Family Gomontiellaceae Elenkin ex Geitler 1942 [Subfamily Gomontielloideaeᵀ] see Family Gomontiellaceae Elenkin ex Geitler (1942) 2.1 [Genus Cyanarcus A. Pascher (1914)] see Genus Gomontiella E.C. Teodoresco (1901)