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 [Family Subsection 5.1 nom. inval.] [Genus "Stigonema" [ICNB]] see Genus Stigonema C.Agardh ex Bornet & Flahault (1887) 1 ["Stigonema minutum" [ICNB]] see Stigonema minutum (C.Agardh) A.H. Hassall ex Bornet & Flahault 1886-1888[1887] [ICBN]