Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Mammalia Linnaeus, 1758 - mammals
           Quadrupedia Linnaeus, 1758 see Class Mammalia Linnaeus, 1758
             Order Beſtiæ Linnaeus, 1758 - beasts
               16 Genus Sus Linnaeus, 1758 - Eurasian pigs
               17 Genus Daſypus Linnaeus, 1758 - long-nosed armadillos
               18 Genus Erinaceus Linnaeus, 1758 - Eurasian hedgehogs
               19 Genus Talpa Linnaeus, 1758 - Old World moles
               20 Genus Sorex Linnaeus, 1758 - long-tailed shrews
               21 Genus Didelphis Linnaeus, 1758 - large American opossums