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 Testacea Linnaeus, 1758
             Genus Murex Linnaeus, 1758
               *a* Spinosi cauda exserta
               *b* Frondosi suturis crispato-frondescentibus, cauda abbreviata, vulgo Purpurae dicti
               *c* Varicosi: suturis rotundatis torosis crassisque
               *d* Ecaudati subechinati
               *e* Bullacei: testa diaphana
               *f* Caudigeri: cauda subulata clausa recta elongata, testa inermi
               *g* Turriti subulati, cauda brevissima