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 Chama Linnaeus, 1758
               129 Chama lazarus Linnaeus, 1758
               130 Chama gigas Linnaeus, 1758
               131 Chama hippopus Linnaeus, 1758
               132 Chama antiquata Linnaeus, 1758
               133 Chama semiorbiculata Linnaeus, 1758
               134 Chama calyculata Linnaeus, 1758
               135 Chama cordata Linnaeus, 1758
               136 Chama oblonga Linnaeus, 1758
               137 Chama gryphoides Linnaeus, 1758
               138 Chama bicornis Linnaeus, 1758