[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Chlorophycota see Phylum Chlorophyta Pascher (1914)
       Class Chlorophyceae Wille (1884) - chlorophytes
         Order Chlorocystidales
           Family Chlorocystidaceae
             Genus Halochlorococcum P.A. Dangeard (1965)
               1 Halochlorococcum dilatatum Kornmann & Sahling
               2 Halochlorococcum marinum P.A. Dangeard
               3 Halochlorococcum moorei (N.L.Gardner, 1917) P. Kornmann & P.-H. Sahling (1983)
               4 Halochlorococcum operculatum P. Kornmann & P.-H. Sahling (1983)