Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Class "Aves" Plinius, nom. inval. - birds] see Class Aves Linnaeus, 1758
             [Order "Gallinae" nom. inval.] see Order Gallinae Linnaeus, 1758
               [Genus "Tetrao" nom. inval.] see Genus Tetrao Linnaeus, 1758
                 1 "Phasianus" Plinius, nom. inval.
                 2 "Urogallus" nom. inval.
                 3 "Tetrao" Plinius, nom. inval.
                 4 "Bonasia" nom. inval.
                 5 "Lagopus" Plinius, nom. inval.
                 6 "Perdix" Plinius, nom. inval.
                 7 "Coturnix" Plinius, nom. inval.