Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] [Superkingdom Eukarya Chatton, 1925] see Domain Eukaryota Chatton, 1925 [Kingdom Protoctista Hogg, 1860] [Phylum Phaeophyta Kjellman (1891)] see Phylum Phaeophycota [Class Cyclosporae] see Class Phaeophyceae Hansgirg (1886)