Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "Lapideum Regnum" nom. inval. - mineral kingdom
           Class "Fossilia" nom. inval. - Lapides aggregati
             Order "Concreta" - rocks
               1 Genus "Saxum" - rock
               2 Genus "Tophus"
               3 Genus "Stalactites"
               4 Genus "Pumex"
               5 Genus "Aetites"
               6 Genus "Tartarus"
               7 Genus "Calculus"