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 Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758 Order Jugulares Linnaeus, 1758 Genus Gadus Linnaeus, 1758 Gadus carbonarius Linnaeus, 1758 see Pollachius virens (C. Linnaeus, 1758)