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 Arca Linnaeus, 1758
               Margine integro; Natibus inflexis
                 140 Arca noae Linnaeus, 1758
                 141 Arca barbata Linnaeus, 1758 see Barbatia barbata (C. Linnaeus, 1758)
                 142 Arca pella Linnaeus, 1758