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)
                                 North American Land Mammal Ages (NALMA)
                                   01 (Age) †Uintan Age
                                   02 (Age) †Duchesnian Age
                                   03 (Age) †Chadronian Age
                                   04 (Age) †Orellan Age
                                   05 (Age) †Whitneyan Age
                                   06 (Age) †Arikareean Age
                                   07 (Age) †Hemingfordian Age
                                   08 (Age) †Barstovian Age
                                   09 (Age) †Clarendonian Age
                                   10 (Age) †Hemphillian Age
                                   11 (Age) †Blancan Age
                                   12 (Age) †Irvingtonian Age
                                   13 (Age) †Rancholabrean Age