Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Quadrupedia nom. inval. - quadrupeds see Class Mammalia Linnaeus, 1758
           Order Jumenta nom. inval. see Class Mammalia Linnaeus, 1758
             Genus Equus nom. inval. see Genus Eqvus Linnaeus, 1758
               1 Equus nom. inval.
               2 Asinus Plinius, nom. inval.
               3 Onager Plinius, nom. inval.
               4 Zebra nom. inval.