living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925 Kingdom Plantae Haeckel (1866) - plants Subkingdom Thallobionta Division Chromophycota see Phylum Chromophyta T.A.Chr. (1962), nom. nud. Class Prymnesiophyceae D.J. Hibberd (1976) see Class Coccolithophyceae Rothm. (1951) Order Coccosphaerales Haeckel (1894) Family Helicosphaeraceae Black (1971) 1 Genus Helicopontosphaera W. Hay & Mohler, in W. Hay et al. (1967)