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 Pecora Linnaeus, 1758 see Infraorder Pecora Linnaeus, 1758
               Genus Bos Linnaeus, 1758 - oxen
                 Bos Taurus Linnaeus, 1758 - aurochs and domestic cattle
                   1 Bos Taurus α see Bos taurus primigenius Bojanus, 1827
                   2 Bos Taurus β see Bos taurus taurus Linnaeus, 1758