[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Superkingdom Eukaryota Whittaker & Margulis, 1978 see Domain Eukaryota Chatton, 1925 Kingdom Plantae Haeckel (1866) - plants Subkingdom Biliphyta Caval.-Sm. (1981) - red algae and glaucophytes see Kingdom Plantae Haeckel (1866) Phylum Rhodophyta Wettst. (1901) - red algae 1 Subphylum Cyanidiophytina [monotypic] 2 Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004) 3 Subphylum Metarhodophytina G.W.Saunders & Hommers. (2004) [monotypic] 4 Subphylum Rhodellophytina Caval.-Sm. (1998)