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
               ["Protista" Haeckel, 1866, incertae sedis] see Kingdom protists
                 [Grade "protozoa" Goldfuss, 1818 - protozoans]
                   ["flagellated protists"]
                     07 ["Hemimastigophora"]
                     07 [Phylum Hemimastigophora W. Foissner et al., 1988]
                     09 [Order Prymnesiida Cavalier-Smith] see Phylum Haptophyta D.J. Hibberd ex Edvardsen & Eikrem (2000)