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 Spirulinales Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014)] see Order Spirulinales Komárek et al. 2014 1 [Family Spirulinaceaeᵀ Hoffmann, Komárek & Kaštovský (2014)] see Family Spirulinaceae (Gomont 1892) Hoffmann et al. 2014 2 [Family Lusitaniellaceae Strunecký & Mareš (2023) [monotypic]] see Family Lusitaniellaceae Strunecký and Mareš 2023