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 Serpula Linnaeus, 1758
               690 Serpula seminulum Linnaeus, 1758
               691 Serpula planorbis Linnaeus, 1758
               692 Serpula spirillum Linnaeus, 1758 see Circeis spirillum (C. Linnaeus, 1758)
               693 Serpula spirorbis Linnaeus, 1758
               694 Serpula triquetra Linnaeus, 1758 see Pomatoceros triqueter (C. Linnaeus, 1758)
               695 Serpula intricata Linnaeus, 1758
               696 Serpula contortuplicata Linnaeus, 1758
               697 Serpula glomerata Linnaeus, 1758
               698 Serpula lumbricalis Linnaeus, 1758
               699 Serpula arenaria Linnaeus, 1758
               700 Serpula anguina Linnaeus, 1758
               701 Serpula penis-veneris Linnaeus, 1758
               702 Serpula penicillus Linnaeus, 1758
               703 Serpula ringens Linnaeus, 1758