Imperium naturae C. Linnaeus, 1758 - nature Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Order Picae Linnaeus, 1758 see Parvclass Picae (C. Linnaeus, 1758) Genus Upupa Linnaeus, 1758