Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 1990 [paraphyletic?] Superphylum Terrabacteria Battistuzzi et al. 2004 Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria Class "Cyanobacteria" Cavalier-Smith, 2002 Subclass Oscillatoriophycideae Order Chroococcales Wettst. (1924) Family "Cyanobacteriaceae" Hoffmann, Komárek & Kaštovský (2005) Genus Microcrocis P.G. Richter in F. Hauck & P.G. Richter (1892) Microcrocis irregularis (G. Lagerheim) L. Geitler 1942