Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               [Phylum Cyanobacteria Garcia-Pichel et al. (2020)] see Phylum Cyanobacteriota Oren et al. 2022
                 [Class Cyanophyceae Hauck (1885)] see Class Chroococcophyceae Hollerbach et al. 1953
                   [Order Chroococcales Ardissone (1887)] see Order Chroococcales corrig. Ardissone 1887
                     [Family "Prochloraceae" Lewin (1977), nom. inval. [monotypic]] see Family Prochloraceae Lewin ex Florenzano, Balloni & Materassi (1986), nom. inval.
                       [Genus "Prochlorococcus" Chisholm, Frankel, Goericke, Olson, Palenik, Waterbury, West-Johnsrud & Zettler (1992), nom. inval. [monotypic]] see Genus Prochlorococcus Chisholm, Frankel, Goericke, Olson, Palenik, Waterbury, West–Johnsrud & Zettler (2020)
                         1 Prochlorococcus marinusᵀ S.W. Chisholm et al. 1992 [ICBN]