Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown clade] Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Bacteria Woese et al. 1990 [paraphyletic?] Schekmanbacteria (RIF3) Anantharaman et al. 2016