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 Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Order Accipitres Linnaeus, 1758 see Suborder Accipitres (C. Linnaeus, 1758) Genus Falco Linnaeus, 1758 Falco melanaetus Linnaeus, 1758