Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Clade Discoba Simpson 2009 [Simpson 2020] Clade Discicristata Cavalier-Smith 1998 [Simpson 2020] Clade Euglenozoa Cavalier-Smith 1981 [Simpson 2020]