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 [Order Prochlorales (ex Lewin 1977) Florenzano et al. 1986] see Order Chroococcales Cavalier-Smith 2002 [Family Prochlorotrichaceae Burger-Wiersma et al. 1989 [monotypic]] [Genus Prochlorothrixᵀ Burger-Wiersma et al. 1989] see Genus Prochlorothrix T. Burger-Wiersma et al. 1989 [ICBN] 1 [Prochlorothrix hollandicaᵀ Burger-Wiersma et al. 1989] see Prochlorothrix hollandica Burger-Wiersma et al. (1989)