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
                                   "tectonic plates"
                                     (Tectonic plate) African Plate
                                       .01.1 (Sedimentary basin) Senegal Basin
                                       .01.2 (Sedimentary basin) Bové Basin
                                       .02 (Sedimentary basin) Ivory Coast Basin
                                       .03 (Sedimentary basin) Volta Basin
                                       .04.1 (Sedimentary basin) Keta Basin
                                       .04.2 (Sedimentary basin) Benin Basin (Ghana)
                                       .05 (Sedimentary basin) Niger Basin (Nigeria)
                                       .06 (Sedimentary basin) Douala Basin (Cameroon)
                                       .07 (Sedimentary basin) Rio Muni Basin (Equatorial Guinea)
                                       .08 (Sedimentary basin) Lower Congo Basin (Angola)
                                       .09 (Sedimentary basin) Kwanza Basin (Angola)
                                       .10 (Sedimentary basin) Benguela Basin (Angola)
                                       .11 (Sedimentary basin) Namibe Basin (Angola)
                                       .12 (Sedimentary basin) Walvis Basin (Namibia)
                                       .13 (Sedimentary basin) Luderitz Basin (Namibia)
                                       .14 (Sedimentary basin) Orange Basin (Namibia)