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) Lithosphere (Earth) - layer of rock "strata" "chronostratigraphic units" "global chronostratigraphic units" (Eonothem) Phanerozoic Eonothem (541.0 Ma - present) (Erathem) Cenozoic Erathem (66.0 Ma - present) (System) †Paleogene System (66.0 - 23.03 Ma) (Series) †Paleocene Series (66.0 - 56.0 Ma) 1 (Stage) †Danian Stage (66.0 - 61.6 Ma) 2 (Stage) †Selandian Stage (61.6 - 59.2 Ma) 3 (Stage) †Thanetian Stage (59.2 - 56.0 Ma)