life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925
     Kingdom Chromista Caval.-Sm. (1981) - chromists
       Subkingdom Chromobiota Caval.-Sm. (1991)
         Infrakingdom Haptophyta Caval.-Sm. (1995) [monotypic] see Subphylum Haptophytina Caval.-Sm. (2015)
           Phylum Haptophyta D.J. Hibberd ex Edvardsen & Eikrem (2000) see Subphylum Haptophytina Caval.-Sm. (2015)
             1 Genus Pavlova R. Butcher (1952)
             2 Genus Prymnesium J. Massart (1920)
             3 Genus Reticulosphaera K.G. Grell (1989)