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 "Prochlorococcaceae" [monotypic] [Genus Prochlorococcusᵀ Chisholm et al. 2001] see Genus Prochlorococcus S.W. Chisholm et al. 1992 [ICBN] [Prochlorococcus marinusᵀ Chisholm et al. 2001] see Prochlorococcus marinus S.W. Chisholm et al. 1992 [ICBN] [Prochlorococcus marinus subsp. marinusᵀ (Chisholm et al. 2001) Rippka et al. 2001] see Prochlorococcus marinus subsp. marinus S.W. Chisholm et al. (1992)