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]
                           1 [Prochlorococcus marinus subsp. marinusᵀ (Chisholm et al. 2001) Rippka et al. 2001] see Prochlorococcus marinus subsp. marinus S.W. Chisholm et al. (1992)
                           2 [Prochlorococcus marinus subsp. pastoris Rippka et al. 2001] see Prochlorococcus marinus subsp. pastoris Rippka et al. 2000 [ICBN]