Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
                             Phylum Haptista Cavalier-Smith, 2003
                               Subphylum Haptophytinaᵀ Caval.-Sm. (2015)
                                 Class Coccolithophyceae Rothm. (1951)
                                   Order Prymnesiales Papenfuss (1955) [monotypic]
                                     Family Prymnesiaceaeᵀ Conrad (1926)
                                       Genus Chrysochromulina J.B. Lackey (1939)
                                         Chrysochromulina brevifilum Parke & Manton, in Parke, Manton & Clarke
                                         Chrysochromulina polylepis Manton & Parke
                                         Chrysochromulina throndsenii Eikrem