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 Zoophyta Linnaeus, 1758 Genus Sertularia Linnaeus, 1758 Ovariis distinctis & exsertis instructae Sertularia avicularia Linnaeus, 1758 see Bugulina avicularia (Linnaeus, 1758)