Imperium naturae C. Linnaeus, 1758 - nature Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Mammalia Linnaeus, 1758 - mammals Unguiculata Linnaeus, 1766 Order Bruta Linnaeus, 1758 Genus Elephas Linnaeus, 1758 - Asiatic elephant