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 Helix Linnaeus, 1758
               Carinatae anfractibus margine acuto
                 572 Helix lapicida Linnaeus, 1758
                 573 Helix oculus capri Linnaeus, 1758
                 574 Helix albella Linnaeus, 1758
                 575 Helix striatula Linnaeus, 1758
                 576 Helix algira Linnaeus, 1758
                 577 Helix leucas Linnaeus, 1758
                 578 Helix planorbis Linnaeus, 1758
                 579 Helix complanata Linnaeus, 1758
                 580 Helix ringens Linnaeus, 1758
                 581 Helix carocolla Linnaeus, 1758
                 582 Helix cornu militare Linnaeus, 1758
                 583 Helix vortex Linnaeus, 1758
                 584 Helix scabra Linnaeus, 1758
                 585 Helix gothica Linnaeus, 1758
                 586 Helix gualtierana Linnaeus, 1758