Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           ["prokaryotes" - bacteria] see Domain Bacteria Woese et al. 1990 stat. inval.
             [Class "Chloroprokaryota" Komárek & Golubić 1990 nom. nud. - chloroprokaryotes]
               1. [Genus "Prochlorococcum" (sic)] see Genus Prochlorococcus Chisholm et al. 1992 nom. inval.