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) †Mesozoic Erathem (252.17 - 66.0 Ma) (System) †Jurassic System (201.3 - 145.0 Ma) (Series) †Lower Jurassic Series (201.3 - 174.1 Ma) (Stage) †Pliensbachian Stage (190.8 - 182.7 Ma) 1 (Substage) †"lower Pliensbachian Substage" 2 (Substage) †"upper Pliensbachian Substage"