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 Plantae Haeckel (1866) - plants Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants Infrakingdom Chlorophyta Caval.-Sm. (1993) [monotypic] - green algae Phylum Chlorophyta Pascher (1914) - green algae Subphylum Chlorophytina T. Cavalier-Sm. (1998) see Phylum Chlorophyta Pascher (1914) Infraphylum Tetraphytae T. Cavalier-Sm. (1998) see Phylum Chlorophyta Pascher (1914) Genus Tetraselmisᵀ S.F.N. Stein (1878)