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 Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825 Order Serpentes Linnaeus, 1758 see Suborder Serpentes Linnaeus, 1758 Genus Coluber Linnaeus, 1758 Coluber lebetinus Linnaeus, 1758