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 Tethys Linnaeus, 1758, nom. rej.
               1 Tethys limacina Linnaeus, 1758
               2 Tethys leporina Linnaeus, 1758 see Fimbria fimbria (Bohadsch, 1761)