organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Eukaryota Chatton, 1925 - eukaryotes Algae 1 Phylum Euglenophyta Pascher (1931) - euglenoids see Class Euglenophyceae W. Schoenichen (1925) 2 Phylum Dinophyta auct. - dinoflagellates see Class Dinophyceae Pascher (1914) 3 Phylum Heterokontophyta Moestrup (1992) - heterokonts see Phylum Ochrophyta Caval.-Sm. (1995) 4 Phylum Prymnesiophyta Hibberd (1976), nom. inval. - haptophytes see Phylum Prymnesiophyta Hibberd ex Doweld (2001) 5 Phylum Rhodophyta Wettst. (1901) - red algae 6 †Acritarcha Evitt, 1963 - acritarchs