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 Vermes Linnaeus, 1758 - worms see Phylum Vermes (C. Linnaeus, 1758) Order Mollusca Linnaeus, 1758 see Phylum Mollusca Linnaeus, 1758 Genus Echinus Linnaeus, 1758 Regulares ano verticali Echinus lucunter Linnaeus, 1758