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 "Catodon" nom. inval.] see Genus Physeter Linnaeus, 1758
                 1 ["Catodon Fistula in rostro" Art., nom. inval.]
                 2 ["Cete" Clus., nom. inval.]