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 Heterokonta Caval.-Sm. (1986) - heterokonts see Superphylum Heterokonta Caval.-Sm. (1986) Superphylum Gyrista Caval.-Sm. (1998) Phylum Ochrophyta Caval.-Sm. (1995) [paraphyletic?] Subphylum Diatomeae Caval.-Sm. (1995) - diatoms see [unranked] Diatomea Kütz. (1844)