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
               1 [Genus "Thrichechus" nom. inval.] see Genus Trichechus Linnaeus, 1758
               1 [Genus "Trichecus" nom. inval.] see Genus Trichechus Linnaeus, 1758
               2 [Genus "Catodon" nom. inval.] see Genus Physeter Linnaeus, 1758
               3 [Genus "Monodon" Artedi, nom. inval.] see Genus Monodon Linnaeus, 1758
               4 [Genus "Balaena" nom. inval.] see Genus Balaena Linnaeus, 1758
               5 [Genus "Delphinus" nom. inval.] see Genus Delphinus Linnaeus, 1758
               6 [Genus "Physeter" nom. inval.] see Genus Physeter Linnaeus, 1758