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. "history" (Earth) "global geochronologic units" (Eon) Phanerozoic Eon (541.0 Ma - present) (Era) Cenozoic Era (66.0 Ma - present) (Period) Quaternary Period (2.58 Ma - present) (Epoch) †Pleistocene Epoch (2.58 - 0.0117 Ma) (Subepoch) †Early Pleistocene Subepoch (2.58 - 0.774 Ma) 1 (Age) †Gelasian Age (2.58 - 1.80 Ma) 2 (Age) †Calabrian Age (1.80 - 0.774 Ma)