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 "Malacopterygii" nom. inval.] see Class Pisces Linnaeus, 1758
               [Genus "Syngnathus" nom. inval.] see Genus Syngnathus Linnaeus, 1758
                 1 "Acus lumbr." nom. inval.
                 2 "Acus" Aristoteles, nom. inval.
                 3 "Hippocampus" nom. inval.