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]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               [Algae]
                 [Division "Prochlorophyta" Lewin (1976), nom. inval.] see Phylum Prochlorophyta Lewin (1976), nom. inval.
                   [Class "Prochlorophyceae"ᵀ Lewin (1977), nom. inval.]
                     1 [Order "Prochlorales"ᵀ Lewin (1977), nom. inval.] see Order Chroococcales corrig. Ardissone 1887