Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Class "Pisces" nom. inval. - fishes] see Class Pisces Linnaeus, 1758
             [Order "Plagiuri" nom. inval.] see Class Mammalia Linnaeus, 1758
               [Genus "Monodon" Artedi, nom. inval.] see Genus Monodon Linnaeus, 1758
                 1 ["Monoceros" nom. inval.]
                 1.0 ["Unicornu" nom. inval.] see Monoceros nom. inval.