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) New World (Biogeographic realm) Nearctic "terrestrial ecoregions" (Nearctic) (Ecoregion complex) Chihuahuan-Tehuacán Deserts (Nearctic) (Terrestrial ecoregion) Chihuahuan desert (Nearctic) "Mexico" (Chihuahuan desert) 1.1 "Chihuahua" (Mexico; Chihuahuan desert) 1.2 "Coahuila" (Mexico; Chihuahuan desert) 1.3 "Nuevo León" (Mexico; Chihuahuan desert) 2 "Durango" (Mexico; Chihuahuan desert) 3 "Zacatecas" (Mexico; Chihuahuan desert) 4 "San Luis Potosí" (Mexico; Chihuahuan desert) 5 "Queretaro" (Mexico; Chihuahuan desert) 6 "Hidalgo" (Mexico; Chihuahuan desert)