Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Regnum Animale" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           ?["Paradoxa" nom. inval.]
             ["Monoceros" veter., nom. inval. - unicorn] see Monodon monoceros Linnaeus, 1758