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Under construction
Substage: "lower Callovian Substage" (chronostratigraphic unit)
Classification by:

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) †Middle Jurassic Series (174.1 - 163.5 Ma)
                                                 (Stage) †Callovian Stage (166.1 - 163.5 Ma)
                                                   (Substage) †"lower Callovian Substage"

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Last updated: 1 Feb 2024