[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Plantae Haeckel (1866) - plants Division Tracheophyta see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998) Subdivision Spermatophytina see Subphylum Spermatophytina Caval.-Sm. (1998) Class Cycadinae 1 Order †Pteridospermales 2 Order †Caytoniales E.Wulff (1926) 3 Order †Bennettitales Bessey (1910) see Order Cycadeoideales E.W.Berry (1916) 4 Order †Nillsoniales orth. inval. see Order Nilssoniales W.Zimm. (1930) 5 Order Cycadales Pers. ex Bercht. & J.Presl (1820) - cycads