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] [Empire Bacteria Haeckel 1894] see Domain Bacteria Woese et al. 1990 [Kingdom Archaebacteria Woese and Fox 1977] see Subdomain Archaebacteria