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 [Order Oscillatoriales Cavalier-Smith 2002 nom. rej.] see Order Oscillatoriales Elenkin (1934) 1 [Genus Halospirulina Nübel et al. 2000] see Genus Spirulina P.J.F. Turpin ex M. Gomont (1892) 2 [Genus Planktothricoides Suda and Watanabe 2002 [monotypic]] see Genus Planktothricoides Suda & M.M. Watan. (2002)