Viridiplantae Cavalier-Smith, 1981 - green plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Chlorophyta Pascher (1914) - green algae
     prasinophytes
       Mamiellophyceae Marin & Melkonian (2010)
         Mamiellales Moestrup (1984)
           1 Genus Ostreococcus C. Courties & M.-J. Chrétiennot-Dinet (1995)
           2 Genus Micromonas I. Manton & M. Parke (1960), nom. illeg. see Genus Micrinomonas Doweld (2001)
           3 Genus Mamiella Ø. Moestrup (1984)