Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Class "Vermes" nom. inval. - vermin] see Class Vermes Linnaeus, 1758
             [Order "Reptilia" nom. inval.] see Order Intestina Linnaeus, 1758
               [Genus "Hirudo" nom. inval.] see Genus Hirudo Linnaeus, 1758
                 1 "Sanguisuga" nom. inval.