organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain eukaryotes see Domain Eukaryota Chatton, 1925 alveolates Cavalier-Smith see [unranked] Alveolata Cavalier-Smith, 1991 Phylum Dinoflagellata Engl. (1903) see Superclass Dinoflagellata Bütschli, 1885 Class Dinophyceae Pascher (1914) Order Thoracosphaerales Tangen (1982) see Order Peridiniales Haeckel (1894) Family Thoracosphaeraceae J. Schiller (1930) Genus Thoracosphaera Kamptner (1927)