Natura - nature actualia - actual entities Mundus Plinius - physical world Astra Plinius - celestial bodies Universe (Supercluster) Virgo-Hydra-Centaurus Supercluster (Supercluster) Virgo Supercluster (Cluster) Local Group (Galaxy) Milky Way Galaxy veter. (Spiral arm) Orion Arm (Region) Local Bubble Local Interstellar Cloud (Planetary system) Solar System (Planet-satellite system) Earth System (Planet) Earth veter. "spheres" (Earth) (Sphere) Biosphere (Earth) - zone of life "terrestrial and freshwater ecoregions" (Bioregion) Old World (Biogeographic realm) Afrotropic (Ecoregion complex) Congolian Coastal Forests 1 (Terrestrial ecoregion) Cross-Sanaga-Bioko coastal forests (Afrotropic) 2 (Terrestrial ecoregion) Sao Tome and Principe moist lowland forests (Afrotropic) 3 (Terrestrial ecoregion) Atlantic Equatorial coastal forests (Afrotropic)